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1992013 CALIFORNIA PLUMBING CODE
CALIFORNIA PLUMBING CODE – MATRIX ADOPTION TABLECHAPTER 12 - FUEL GAS PIPING
(Matrix Adoption Tables are non-regulatory, intended only as an aid to the user. See Chapter 1 for state agency authority and building application.)
Adopting Agency BSC SFMHCD DSA OSHPD
BSCC DPH AGR DWR CA SL SLC1 2 1-AC AC SS SS/CC 1 2 3 4
Adopt Entire Chapter X X X X X X X X X X
Adopt Entire Chapter as amended(amended sections listed below)
Adopt only those sections that arelisted below
Chapter/Section
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1201.0 Scope of Gas Piping.1201.1 Coverage of Piping System. Coverage of piping sys-tems shall extend from the point of delivery to the applianceconnections. For other than undiluted liquefied petroleum gassystems, the point of delivery shall be the outlet of the serv-ice meter assembly or the outlet of the service regulator orservice shutoff valve where no meter is provided. For undi-luted liquefied petroleum gas systems, the point of deliveryshall be considered the outlet of the final pressure regulator,exclusive of the line gas regulators where no meter is in-stalled. Where a meter is installed, the point of delivery shallbe the outlet of the meter. [NFPA 54-12:1.1.1.1(A)]1201.2 Piping System Requirements. Piping systems re-quirements shall include design, materials, components, fab-rications, assembly, installation, testing, inspection, operation,and maintenance. [NFPA 54:1.1.1.1(C)]1201.3 Application. This code shall not apply to the follow-ing (reference standards for some of which appear in Chap-ter 14):(1) Portable LP-Gas appliances that are not connected to a
fixed fuel piping system.(2) Installation of appliances such as brooders, dehydrators,
dryers, and irrigation equipment used for agriculturalpurposes.
(3) Raw material (feedstock) applications, except for pipingto special atmosphere generators.
(4) Oxygen-fuel gas cutting and welding systems.(5) Industrial gas applications using gases such as acetylene
and acetylenic compounds, hydrogen, ammonia, carbonmonoxide, oxygen, and nitrogen.
(6) Petroleum refineries, pipeline compressor or pumpingstations, loading terminals, compounding plants, refin-ery tank farms, and natural gas processing plants.
(7) Large integrated chemical plants or portions of suchplants where flammable or combustible liquids or gasesare produced by chemical reactions or used in chemicalreactions.
(8) LP-Gas installations at utility gas plants.(9) Liquefied natural gas (LNG) installations.(10) Fuel gas piping in electric utility power plants.(11) Proprietary items of equipment, apparatus, or instru-
ments such as gas-generating sets, compressors, andcalorimeters.
(12) LP-Gas appliances for vaporization, gas mixing, and gasmanufacturing.
(13) LP-Gas piping for buildings under construction or reno-vations that are not to become part of the permanentbuilding piping system—that is, temporary fixed pipingfor building heat.
(14) Installation of LP-Gas systems for railroad switch heating.
(15) Installation of LP-Gas and compressed natural gas sys-tems on vehicles.
(16) Gas piping, meters, gas-pressure regulators, and otherappurtenances used by the serving gas supplier in distri-bution of gas, other than undiluted LP-Gas. [NFPA 54-12:1.1.1.2]
1202.0 General.1202.1 Installation. The regulations of this chapter shall gov-ern the installation of fuel gas piping in or in connection witha building, structure or within the property lines of premisesup to 5 pounds-force per square inch (34 kPa), other thanservice pipe. Fuel oil piping systems shall be installed in ac-cordance with NFPA 31.
1203.0 Inspection.1203.1 Inspection Notification. Upon completion of the in-stallation, alteration, or repair of gas piping, and prior to theuse thereof, the Authority Having Jurisdiction shall be noti-fied that such gas piping is ready for inspection.1203.2 Excavation. Excavations required for the installationof underground piping shall be kept open until such time asthe piping has been inspected and approved. Where such pip-ing is covered or concealed before such approval, it shall beexposed upon the direction of the Authority Having Jurisdic-tion.1203.3 Type of Inspections. The Authority Having Jurisdic-tion shall make the following inspections and either shall ap-prove that portion of the work as completed or shall notifythe permit holder wherein the same fails to be in accordancewith this code.
1203.3.1 Rough Piping Inspection. This inspectionshall be made after gas piping authorized by the permithas been installed and before such piping has been cov-ered or concealed or fixture or appliance has been at-tached thereto. This inspection shall include adetermination that the gas piping size, material, and in-stallation meet the requirements of this code.1203.3.2 Final Piping Inspection. This inspection shallbe made after piping authorized by the permit has beeninstalled and after portions thereof that are to be coveredor concealed are so concealed and before fixture, appli-ance, or shutoff valve has been attached thereto. This in-spection shall comply with Section 1213.1. Test gaugesused in conducting tests shall be in accordance with Sec-tion 318.0.
1203.4 Inspection Waived. In cases where the work author-ized by the permit consists of a minor installation of addi-tional piping to piping already connected to a gas meter, theforegoing inspections shall be permitted to be waived at thediscretion of the Authority Having Jurisdiction. In this event,the Authority Having Jurisdiction shall make such inspection
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as deemed advisable in order to be assured that the work hasbeen performed in accordance with the intent of this code.
1204.0 Certificate of Inspection.1204.1 Issuance. Where upon final piping inspection, the in-stallation is found to be in accordance with the provisions ofthis code, a certificate of inspection shall be permitted to beissued by the Authority Having Jurisdiction.1204.2 Gas Supplier. A copy of the certificate of such finalpiping inspection shall be issued to the serving gas suppliersupplying gas to the premises.1204.3 Unlawful. It shall be unlawful for a serving gas sup-plier, or person furnishing gas, to turn on or cause to be turnedon, a fuel gas or a gas meter or meters, until such certificateof final inspection, as herein provided, has been issued.
1205.0 Authority to Render Gas Service.1205.1 Authorized Personnel. It shall be unlawful for a per-son, firm, or corporation, excepting an authorized agent oremployee of a person, firm, or corporation engaged in thebusiness of furnishing or supplying gas and whose servicepipes supply or connect with the particular premises, to turnon or reconnect gas service in or on a premises where andwhen gas service is, at the time, not being rendered.1205.2 Outlets. It shall be unlawful to turn on or connectgas in or on the premises unless outlets are securely con-nected to gas appliances or capped or plugged with screwjoint fittings.
1206.0 Authority to Disconnect.1206.1 Disconnection. The Authority Having Jurisdiction orthe serving gas supplier is hereby authorized to disconnectgas piping or appliance or both that shall be found not to bein accordance with the requirements of this code or that arefound defective and in such condition as to endanger life orproperty.1206.2 Notice. Where such disconnection has been made, anotice shall be attached to such gas piping or appliance orboth that shall state the same has been disconnected, togetherwith the reasons thereof.1206.3 Capped Outlets. It shall be unlawful to remove ordisconnect gas piping or gas appliance without capping orplugging with a screw joint fitting, the outlet from which saidpipe or appliance was removed. Outlets to which gas appli-ances are not connected shall be left capped, gastight on apiping system that has been installed, altered, or repaired.Exception: Where an approved listed quick-disconnect de-vice is used.
1207.0 Temporary Use of Gas.1207.1 General. Where temporary use of gas is desired andthe Authority Having Jurisdiction deems the use necessary, apermit shall be permitted to be issued for such use for a pe-riod of time not to exceed that designated by the AuthorityHaving Jurisdiction, provided that such gas piping system
otherwise is in accordance with the requirements of this coderegarding material, sizing, and safety.
1208.0 Gas Piping System Design, Materials, and Com-ponents.1208.1 Installation of Piping System. Where required by theAuthority Having Jurisdiction, a piping sketch or plan shall beprepared before proceeding with the installation. This planshall show the proposed location of piping, the size of differ-ent branches, the various load demands, and the location ofthe point of delivery. [NFPA 54:5.1.1]
1208.1.1 Addition to Existing System. Where addi-tional appliances are being connected to a gas piping sys-tem, the existing piping shall be checked to determinewhether it has adequate capacity. Where inadequate, theexisting system shall be enlarged as required, or separategas piping of approved capacity shall be provided.[NFPA 54:5.1.2]
1208.2 Provision for Location of Point of Delivery. The lo-cation of the point of delivery shall be acceptable to the serv-ing gas supplier. [NFPA 54:5.2]1208.3 Interconnections Between Gas Piping Systems.
1208.3.1 Interconnections Supplying Separate Users.Where two or more meters, or two or more service reg-ulators where meters are not provided, are located on thesame premises and supply separate users, the gas pipingsystems shall not be interconnected on the outlet side ofthe meters or service regulators. [NFPA 54:5.3.1]1208.3.2 Interconnections for Standby Fuels. Where asupplementary gas for standby use is connected down-stream from a meter or a service regulator where a meteris not provided, a device to prevent backflow shall be in-stalled. A three-way valve installed to admit the standbysupply, and at the same time shut off the regular supply,shall be permitted to be used for this purpose. [NFPA54:5.3.2]
1208.4 Sizing of Gas Piping Systems. Gas piping systemsshall be of such size and so installed as to provide a supply ofgas to meet the maximum demand and supply gas to each ap-pliance inlet at not less than the minimum supply pressure re-quired by the appliance. [NFPA 54:5.4.1]
1208.4.1 Maximum Gas Demand. The volumetric flowrate of gas to be provided (in cubic feet per hour) shall becalculated using the manufacturer’s input ratings of theappliance served, adjusted for altitude. Where the inputrating is not indicated, the gas supplier, appliance manu-facturer, or a qualified agency shall be contacted or therating from Table 1208.4.1 shall be used for estimatingthe volumetric flow rate of gas to be supplied.
The total connected hourly load shall be used as thebasis for piping sizing, assuming the appliances are op-erating at full capacity simultaneously.Exception: Sizing shall be permitted to be based uponestablished load diversity factors. [NFPA 54-12:5.4.2]1208.4.2 Sizing Methods. Gas piping shall be sized inaccordance with one of the following:
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(1) Pipe sizing tables or sizing equations in this chapter.(2) Other approved engineering methods acceptable to
the Authority Having Jurisdiction.(3) Sizing tables included in a listed piping system man-
ufacturer’s instructions. [NFPA 54:5.4.3]1208.4.3 Allowable Pressure Drop. The design pressureloss in a piping system under maximum probable flowconditions, from the point of delivery to the inlet con-nection of the appliance, shall be such that the supply
pressure at the appliance is greater than or equal to theminimum pressure required by the appliance. [NFPA54:5.4.4]
1208.5 Acceptable Piping Materials and Joining Methods.Materials used for piping systems shall be in accordance withthe requirements of this chapter or shall be acceptable to theAuthority Having Jurisdiction. [NFPA 54:5.6.1.1]
1208.5.1 Materials. Pipe, fittings, valves, or other ma-terials shall not be used again unless they are free of for-eign materials and have been ascertained to be approvedfor the service intended. [NFPA 54:5.6.1.2]
1208.5.1.1 Other Materials. Material not coveredby the standards specifications listed herein shall beinvestigated and tested to determine that it is safe forthe proposed service and, in addition, shall be rec-ommended for that service by the manufacturer andshall be acceptable to the Authority Having Juris-diction. [NFPA 54:5.6.1.3]
1208.5.2 Metallic Pipe.1208.5.2.1 Cast-Iron. Cast-iron pipe shall not beused. [NFPA 54:5.6.2.1]1208.5.2.2 Steel and Wrought-Iron. Steel andwrought-iron pipe shall be not less than standardweight (Schedule 40) and shall comply with one ofthe following standards:(1) ASME B36.10(2) ASTM A 53(3) ASTM A 106 [NFPA 54:5.6.2.2]1208.5.2.3 Copper and Brass. Copper and brasspipe shall not be used where the gas contains morethan an average of 0.3 grains of hydrogen sulfide per100 standard cubic feet (scf) of gas (0.7 mg/100 L).[NFPA 54:5.6.2.3]
Threaded copper, brass, or aluminum alloy pipeshall not be used with gases corrosive to such mate-rial. [NFPA 54:5.6.2.4]1208.5.2.4 Aluminum Alloy.Aluminum alloy pipeshall comply with ASTM B 241 (except that the useof alloy 5456 is prohibited) and shall be marked ateach end of each length indicating compliance. Alu-minum alloy pipe shall be coated to protect againstexternal corrosion where it is in contact with ma-sonry, plaster, insulation or is subject to repeatedwettings by such liquids as water, detergents, orsewage. [NFPA 54:5.6.2.5]
Aluminum alloy pipe shall not be used in exte-rior locations or underground. [NFPA 54:5.6.2.6]
1208.5.3 Metallic Tubing. Seamless copper, aluminumalloy, or steel tubing shall not be used with gases corro-sive to such material. [NFPA 54:5.6.3]
1208.5.3.1 Steel. Steel tubing shall comply withASTM A 254. [NFPA 54:5.6.3.1]1208.5.3.2 Copper and Brass. Copper and brasstubing shall not be used where the gas contains more
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APPLIANCE INPUT(Btu/h approx.)
Space Heating UnitsWarm air furnace
Single familyMultifamily, per unit
Hydronic boilerSingle familyMultifamily, per unit
100 00060 000
100 00060 000
Space and Water Heating UnitsHydronic boiler
Single familyMultifamily, per unit
120 00075 000
Water Heating AppliancesWater heater, automatic storage
30 to 40 gallon tankWater heater, automatic storage
50 gallon tankWater heater, automatic instantaneous
Capacity at 2 gallons per minuteCapacity at 4 gallons per minuteCapacity at 6 gallons per minute
Water heater, domestic, circulating orside-arm
35 000
50 000
142 800285 000428 400
35 000
Cooking AppliancesRange, freestanding, domestic Built-in oven or broiler unit, domesticBuilt-in top unit, domestic
65 00025 00040 000
Other AppliancesRefrigeratorClothes dryer, Type 1 (domestic)Gas fireplace direct ventGas logBarbecueGaslight
300035 00040 00080 00040 0002500
TABLE 1208.4.1APPROXIMATE GAS INPUT FOR
TYPICAL APPLIANCES[NFPA 54: TABLE 5.4.2.1]
For SI units: 1000 British thermal units per hour = 0.293 kW
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than an average of 0.3 grains of hydrogen sulfide per100 scf of gas (0.7 mg/100 L). Copper tubing shallcomply with standard Type K or L of ASTM B 88 orASTM B 280. [NFPA 54:5.6.3.2]1208.5.3.3 Aluminum Alloy. Aluminum alloy tub-ing shall comply with ASTM B 210 or ASTM B 241.Aluminum alloy tubing shall be coated to protectagainst external corrosion where it is in contact withmasonry, plaster, insulation, or is subject to repeatedwettings by such liquids as water, detergent, orsewage. Aluminum alloy tubing shall not be used inexterior locations or underground. [NFPA 54:5.6.3.3]1208.5.3.4 Corrugated Stainless Steel. Corrugatedstainless steel tubing shall be tested and listed in ac-cordance with the construction, installation, and per-formance requirements of CSA LC-1. [NFPA54:5.6.3.4]
1208.5.4 Plastic Pipe, Tubing, and Fittings. Polyethyl-ene plastic pipe, tubing, and fittings used to supply fuelgas shall be in accordance with ASTM D 2513. Pipe tobe used shall be marked "gas" and "ASTM D 2513.”[NFPA 54-12:5.6.4.1.1]
1208.5.4.1 Regulator Vent Piping. Plastic pipe andfittings used to connect regulator vents to remotevent terminations shall be PVC in accordance withUL 651. PVC vent piping shall not be installed in-doors. [NFPA 54-12:5.6.4.2]1208.5.4.2 Anodeless Risers. Anodeless risers shallcomply with Section 1208.5.4.2(A) through Section1208.5.4.2(C). [NFPA 54:5.6.4.3]
1208.5.4.2(A) Factory-Assembled AnodelessRisers. Factory-assembled anodeless risers shallbe recommended by the manufacturer for the gasused and shall be leak-tested by the manufacturerin accordance with written procedures. [NFPA54:5.6.4.3(1)]1208.5.4.2(B) Service Head Adapters andField-Assembled Anodeless Risers. Servicehead adapters and field-assembled anodelessrisers incorporating service head adapters shallbe recommended by the manufacturer for thegas used and shall be design-certified to be inaccordance with the requirements of Category Iof ASTM D 2513. The manufacturer shall pro-vide the user qualified installation instructions.[NFPA 54:5.6.4.3(2)]1208.5.4.2(C) Undiluted Liquefied PetroleumGas Piping. The use of plastic pipe, tubing, andfittings in undiluted liquefied petroleum gaspiping systems shall be in accordance withNFPA 58. [NFPA 54:5.6.4.3(3)]
1208.5.5 Workmanship and Defects. Gas pipe, tubing,and fittings shall be clear and free from cutting burrs anddefects in structure or threading, and shall be thoroughlybrushed and chip and scale blown. Defects in pipe, tub-ing, and fittings shall not be repaired. Defective pipe, tub-ing, and fittings shall be replaced. [NFPA 54:5.6.5]
1208.5.6 Protective Coating. Where in contact with ma-terial or atmosphere exerting a corrosive action, metallicpiping and fittings coated with a corrosion-resistant ma-terial shall be used. External or internal coatings or lin-ings used on piping or components shall not beconsidered as adding strength. [NFPA 54:5.6.6]1208.5.7 Metallic Pipe Threads. Metallic pipe and fit-ting threads shall be taper pipe threads and shall complywith ASME B1.20.1. [NFPA 54:5.6.7.1]
1208.5.7.1 Damaged Threads. Pipe with threadsthat are stripped, chipped, corroded, or otherwisedamaged shall not be used. Where a weld opens dur-ing the operation of cutting or threading, that por-tion of the pipe shall not be used. [NFPA 54:5.6.7.2]1208.5.7.2 Number of Threads. Field threading ofmetallic pipe shall be in accordance with Table1208.5.7.2. [NFPA 54:5.6.7.3]
1208.5.7.3 Thread Joint Compounds. Thread jointcompounds shall be resistant to the action of lique-fied petroleum gas or to other chemical constituentsof the gases to be conducted through the piping.[NFPA 54-12:5.6.7.4]
1208.5.8 Metallic Piping Joints and Fittings. The typeof piping joint used shall be approved for the pressure-temperature conditions and shall be selected giving con-sideration to joint tightness and mechanical strengthunder the service conditions. The joint shall be able tosustain the maximum end force due to the internal pres-sure and additional forces due to temperature expansionor contraction, vibration, fatigue, or to the weight of thepipe and its contents. [NFPA 54:5.6.8]
1208.5.8.1 Pipe Joints. Pipe joints shall be threaded,flanged, brazed, or welded. Where nonferrous pipeis brazed, the brazing materials shall have a meltingpoint in excess of 1000°F (538°C). Brazing alloys
IRONPIPE SIZE(inches)
APPROXIMATE LENGTH OFTHREADED PORTION
(inches)
APPROXIMATE NUM-BER OF THREADS TO
BE CUT1⁄2 3⁄4 103⁄4 3⁄4 101 7⁄8 10
11⁄4 1 1111⁄2 1 112 1 11
21⁄2 11⁄2 123 11⁄2 124 15⁄8 13
TABLE 1208.5.7.2SPECIFICATIONS FOR THREADING METALLIC PIPE
[NFPA 54: TABLE 5.6.7.3]
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shall not contain more than 0.05 percent phospho-rus. [NFPA 54:5.6.8.1]1208.5.8.2 Tubing Joints. Tubing joints shall eitherbe made with approved gas tubing fittings, be brazedwith a material having a melting point in excess of1000°F (538°C), or made by press-connect fittingsin accordance with CSA LC-4. Brazing alloys shallnot contain more than 0.05 percent phosphorus.[NFPA 54:5.6.8.2]1208.5.8.3 Flared Joints. Flared joints shall be usedin systems constructed from nonferrous pipe andtubing where experience or tests have demonstratedthat the joint is approved for the conditions andwhere provisions are made in the design to preventseparation of the joints. [NFPA 54:5.6.8.3]1208.5.8.4 Metallic Pipe Fittings (IncludingValves, Strainers, Filters). Metallic pipe fittingsshall comply with the following:(1) Threaded fittings in sizes exceeding 4 inches
(100 mm) shall not be used unless acceptable tothe Authority Having Jurisdiction.
(2) Fittings used with steel or wrought-iron pipeshall be steel, brass, bronze, malleable iron, orcast-iron.
(3) Fittings used with copper or brass pipe shall becopper, brass, or bronze.
(4) Fittings used with aluminum alloy pipe shall beof aluminum alloy.
(5) Cast-iron fittings.(a) Flanges shall be permitted.(b) Bushings shall not be used.(c) Fittings shall not be used in systems con-
taining flammable gas-air mixtures.(d) Fittings in sizes 4 inches (100 mm) and
larger shall not be used indoors unless ap-proved by the Authority Having Jurisdic-tion.
(e) Fittings in sizes 6 inches (150 mm) andlarger shall not be used unless approved bythe Authority Having Jurisdiction.
(6) Aluminum alloy fitting threads shall not formthe joint seal.
(7) Zinc-aluminum alloy fittings shall not be usedin systems containing flammable gas-air mix-tures.
(8) Special fittings such as couplings; proprietary-type joints; saddle tees; gland-type compressionfittings; and flared, flareless, or compression-type tubing fittings shall be:(a) Used within the fitting manufacturer’s
pressure-temperature recommendations.(b) Used within the service conditions antici-
pated with respect to vibration, fatigue,thermal expansion, or contraction.
(c) Installed or braced to prevent separation ofthe joint by gas pressure or external physi-cal damage.
(d) Acceptable to the Authority Having Juris-diction. [NFPA 54:5.6.8.4]
1208.5.9 Plastic Piping, Joints, and Fittings. Plasticpipe, tubing, and fittings shall be installed in accordancewith the manufacturer’s installation instructions. Section1208.5.9.1 through Section 1208.5.9.4 shall be observedwhere making such joints. [NFPA 54:5.6.9]
1208.5.9.1 Joint Design. The joint shall be designedand installed so that the longitudinal pullout resist-ance of the joint shall be equal to the tensile strengthof the plastic piping material. [NFPA 54:5.6.9(1)]1208.5.9.2 Heat-Fusion Joint. Heat-fusion jointsshall be made in accordance with AWS B2.4. Jointsshall be made with the joining method recommendedby the pipe manufacturer. Heat-fusion fittings shallbe marked "ASTM D 2513." [NFPA 54:5.6.9(2)]1208.5.9.3 Compression-Type Mechanical Joints.Where compression-type mechanical joints are used,the gasket material in the fitting shall be compatiblewith the plastic piping and with the gas distributed bythe system. An internal tubular rigid stiffener shall beused in conjunction with the fitting. The stiffener shallbe flush with the end of the pipe or tubing, shall extendnot less than the outside end of the pipe or tubing, andshall extend not less than to the outside end of thecompression fitting where installed. The stiffener shallbe free of rough or sharp edges and shall not be aforced fit in the plastic. Split tubular stiffeners shallnot be used. [NFPA 54:5.6.9(3)]1208.5.9.4 Liquefied Petroleum Gas Piping Sys-tems. Plastic piping joints and fittings for use in liq-uefied petroleum gas piping systems shall be inaccordance with NFPA 58. [NFPA 54:5.6.9(4)]
1208.5.10 Flanges. Flanges shall comply with ASMEB16.1, ASME B16.20, or MSS SP-6. The pressure-tem-perature ratings shall equal or exceed that required by theapplication. [NFPA 54:5.6.10]
1208.5.10.1 Flange Facings. Standard facings shallbe permitted for use under this code. Where 150 psi(1034 kPa) steel flanges are bolted to Class 125 cast-iron flanges, the raised face on the steel flange shallbe removed. [NFPA 54:5.6.10.1]1208.5.10.2 Lapped Flanges. Lapped flanges shallbe used aboveground or in exposed locations acces-sible for inspection. [NFPA 54:5.6.10.2]
1208.5.11 Flange Gaskets. The material for gaskets shallbe capable of withstanding the design temperature andpressure of the piping system and the chemical con-stituents of the gas being conducted without change toits chemical and physical properties. The effects of fireexposure to the joint shall be considered in choosing thematerial. [NFPA 54:5.6.11] Flange gaskets shall complywith the following requirements:
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(1) Acceptable materials include the following:(a) Metal (plain or corrugated)(b) Composition(c) Aluminum "O" rings and spiral-wound metal
gaskets [NFPA 54-12:5.6.11.1](2) Where a flanged joint is opened, the gasket shall be
replaced. [NFPA 54:5.6.11.2](3) Full-face gaskets shall be used with bronze and cast-
iron flanges. [NFPA 54:5.6.11.3]1208.6 Gas Meters. Gas meters shall be selected for the max-imum expected pressure and permissible pressure drop.[NFPA 54:5.7.1]
1208.6.1 Location. Gas meters shall be located in venti-lated spaces readily accessible for examination, reading,replacement, or necessary maintenance. [NFPA54:5.7.2.1]
1208.6.1.1 Subject to Damage. Gas meters shall notbe placed where they will be subjected to damage,such as adjacent to a driveway; under a fire escape;in public passages, halls, or coal bins; or where theywill be subject to excessive corrosion or vibration.[NFPA 54:5.7.2.2]1208.6.1.2 Extreme Temperatures. Gas metersshall not be located where they will be subjected toextreme temperatures or sudden extreme changes intemperature. Meters shall not be located in areaswhere they are subjected to temperatures beyondthose recommended by the manufacturer. [NFPA54:5.7.2.3]
1208.6.2 Supports. Gas meters shall be supported orconnected to rigid piping so as not to exert a strain on themeters. Where flexible connectors are used to connect agas meter to downstream piping at mobile homes in mo-bile home parks, the meter shall be supported by a postor bracket placed in a firm footing or by other means pro-viding equivalent support. [NFPA 54:5.7.3]1208.6.3 Meter Protection. Meters shall be protectedagainst overpressure, backpressure, and vacuum. [NFPA54-12:5.7.4]1208.6.4 Identification. Gas piping at multiple meter in-stallations shall be marked by a metal tag or other per-manent means attached by the installing agency,designating the building or the part of the building beingsupplied. [NFPA 54:5.7.5]
1208.7 Gas Pressure Regulators. A line gas pressure regu-lator shall be installed where the gas supply pressure exceedsthat at which the appliance is designed to operate or variesbeyond design pressure limits. [NFPA 54-12:5.8.1]
1208.7.1 Overpressure Protection. Where the gas sup-ply design pressure in piping systems located indoors ex-ceeds 2 psi (14 kPa) and line pressure regulators areinstalled to reduce the supply pressure to 14 inches watercolumn (3.5 kPa) or less, the following shall apply:(1) Regulators shall be provided with factory installed
overpressure protection devices.
(2) Overpressure protection devices shall limit the pres-sure downstream of the line pressure regulator to 2psi (14 kPa) in the event of failure of the line pres-sure regulator. [NFPA 54-12:5.8.3]
1208.7.2 Listing. Line gas pressure regulators shall belisted in accordance with CSA Z21.80. [NFPA 54:5.8.2]1208.7.3 Location. The gas pressure regulator shall beaccessible for servicing. [NFPA 54:5.8.3]1208.7.4 Regulator Protection. Pressure regulators shallbe protected against physical damage. [NFPA 54:5.8.4]1208.7.5 Venting.
1208.7.5.1 Line Gas Pressure Regulators. Linegas pressure regulators shall be installed in accor-dance with the following requirements:(1) An independent vent to the exterior of the build-
ing, sized in accordance with the regulator man-ufacturer’s instructions, shall be provided wherethe location of a regulator is such that a ruptureddiaphragm will cause a hazard. Where morethan one regulator is at a location, each regula-tor shall have a separate vent to the outdoors, orwhere approved by the Authority Having Juris-diction, the vent lines shall be permitted to bemanifolded in accordance with accepted engi-neering practices to minimize backpressure inthe event of diaphragm failure. Materials forvent piping shall comply with Section 1208.5.Exception: A regulator and vent limiting meanscombination listed in accordance with CSAZ21.80 shall be permitted to be used without avent to the outdoors.
(2) The vent shall be designed to prevent the entryof water, insects, or other foreign materials thatwill cause blockage.
(3) The regulator vent shall terminate not less than3 feet (914 mm) from a source of ignition.
(4) At locations where regulators will be sub-merged during floods, a special antiflood-typebreather vent fitting shall be installed, or thevent line shall be extended above the height ofthe expected flood waters.
(5) A regulator shall not be vented to the applianceflue or exhaust system. [NFPA 54:5.8.5.1]
1208.7.5.2 Venting of Gas Appliance PressureRegulators. Venting of gas appliance pressure reg-ulators shall be in accordance with the following re-quirements:(1) Appliance pressure regulators requiring access
to the atmosphere for successful operation shallbe equipped with vent piping leading outdoorsor, where the regulator vent is an integral part ofthe appliance, into the combustion chamber ad-jacent to a continuous pilot, unless constructedor equipped with a vent-limiting means to limitthe escape of gas from the vent opening in theevent of diaphragm failure.
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(2) Vent limiting means shall be employed on listedappliance pressure regulators.
(3) In the case of vents leading outdoors, meansshall be employed to prevent water from enter-ing this piping and also to prevent blockage ofvents by insects and foreign matter.
(4) Under no circumstances shall a regulator bevented to the appliance flue or exhaust system.
(5) In the case of vents entering the combustionchamber, the vent shall be located so the escap-ing gas will be readily ignited by the pilot andthe heat liberated thereby will not adversely af-fect the normal operation of the safety shutoffsystem. The terminus of the vent shall be se-curely held in a fixed position relative to thepilot. For manufactured gas, the need for aflame arrester in the vent piping shall be deter-mined.
(6) Vent lines from a gas appliance pressure regu-lator and bleed lines from a diaphragm-typevalve shall not be connected to a common man-ifold terminating in a combustion chamber. Ventlines shall not terminate in positive-pressure-type combustion chambers. [NFPA 54:9.1.19]
1208.7.5.3 Discharge of Vents. The discharge ofvents shall be in accordance with the following re-quirements:(1) The discharge stacks, vents, or outlet parts of
pressure-relieving and pressure-limiting devicesshall be located so that gas is safely dischargedinto the outdoors.
(2) Discharge stacks or vents shall be designed toprevent the entry of water, insects, or other for-eign material that could cause blockage. Thedischarge stack or vent line shall be not lessthan the same size as the outlet of the pressure-relieving device. [NFPA 54:5.9.7]
1208.7.6 Bypass Piping. Valved and regulated bypassesshall be permitted to be placed around gas line pressureregulators where continuity of service is imperative.[NFPA 54:5.8.6]1208.7.7 Identification. Line pressure regulators at mul-tiple regulator installations shall be marked by a metaltag or other permanent means designating the buildingor the part of the building being supplied. [NFPA54:5.8.7]
1208.8 Backpressure Protection. Protective devices shall beinstalled as close to the appliance as practical where the designof the appliance connected is such that air, oxygen, or standbygases are capable of being forced into the gas supply system.Gas and air combustion mixers incorporating double di-aphragm "zero" or "atmosphere" governors or regulators shallrequire no further protection unless connected directly to com-pressed air or oxygen at pressures of 5 psi (34 kPa) or more.[NFPA 54:5.10.1]
1208.8.1 Protective Devices. Protective devices shall in-clude, but not be limited to the following:
(1) Check valves.(2) Three-way valves (of the type that completely closes
one side before starting to open the other side).(3) Reverse flow indicators controlling positive shutoff
valves.(4) Normally closed air-actuated positive shutoff pres-
sure regulators. [NFPA 54:5.10.2]1208.9 Low-Pressure Protection. A protective device shallbe installed between the meter and the appliance or equip-ment where the operation of the appliance or equipment issuch that it is capable of producing a vacuum or a dangerousreduction in gas pressure at the meter. Such protective devicesinclude, but are not limited to, mechanical, diaphragm-oper-ated, or electrically operated low-pressure shutoff valves.[NFPA 54-12:5.11]1208.10 Shutoff Valves. Shutoff valves shall be approvedand shall be selected giving consideration to pressure drop,service involved, emergency use, and reliability of operation.Shutoff valves of size 1 inch (25 mm) National Pipe Threadand smaller shall be listed. [NFPA 54:5.12]1208.11 Expansion and Flexibility. Piping systems shall bedesigned to prevent failure from thermal expansion or con-traction. [NFPA 54-12:5.14.1]
1208.11.1 Special Local Conditions. Where local con-ditions include earthquake, tornado, unstable ground, orflood hazards, special consideration shall be given to in-creased strength and flexibility of piping supports andconnections. [NFPA 54:5.14.2]
1209.0 Excess Flow Valve.1209.1 General. Where automatic excess flow valves are in-stalled, they shall be listed, sized, and installed in accordancewith the manufacturer’s installation instructions. [NFPA54:5.13]
1210.0 Gas Piping Installation.1210.1 Piping Underground. Underground gas piping shallbe installed with approved clearance from other undergroundstructures to avoid contact therewith, to allow maintenance,and to protect against damage from proximity to other struc-tures. In addition, underground plastic piping shall be in-stalled with approved clearance or shall be insulated fromsources of heat so as to prevent the heat from impairing theserviceability of the pipe. [NFPA 54:7.1.1]
1210.1.1 Cover Requirements.Underground piping sys-tems shall be installed with a cover not less than 18inches (457 mm). Where external damage to the pipe isnot likely to result, the cover shall be not less than 12inches (305 mm). Where a cover not less than 12 inches(305 mm) cannot be provided, the pipe shall be installedin conduit or bridged (shielded). [NFPA 54:7.1.2.1]1210.1.2 Trenches. The trench shall be graded so thatthe pipe has a firm, substantially continuous bearing onthe bottom of the trench. [NFPA 54:7.1.2.2]
1210.1.2.1 Backfilling. Where flooding of thetrench is done to consolidate the backfill, care shall
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be exercised to see that the pipe is not floated fromits firm bearing on the trench bottom. [NFPA54:7.1.2.3]
1210.1.3 Protection Against Corrosion. Gas piping incontact with earth or other material that is capable of cor-roding the piping shall be protected against corrosion inan approved manner. Where dissimilar metals are joinedunderground, an insulating coupling or fitting shall beused. Piping shall not be laid in contact with cinders. Un-coated threaded or socket-welded joints shall not be usedin piping in contact with soil or where internal or exter-nal crevice corrosion is known to occur. [NFPA 54:7.1.3]1210.1.4 Protection Against Freezing. Where the for-mation of hydrates or ice is known to occur, piping shallbe protected against freezing. [NFPA 54:7.1.4]1210.1.5 Piping Through Foundation Wall. Under-ground piping installed through the outer foundation orbasement wall of a building shall be encased in a pro-tective sleeve or protected by an approved device ormethod. The space between the gas piping and the sleeveand between the sleeve and the wall shall be sealed toprevent entry of gas and water. [NFPA 54-12:7.1.5]1210.1.6 Piping Underground Beneath Buildings.Where gas piping is installed underground beneath build-ings, the piping shall be either:(1) Encased in an approved conduit designed to with-
stand the imposed loads and installed in accordancewith Section 1210.1.6.1 or Section 1210.1.6.2.
(2) A piping or encasement system listed for installationbeneath buildings. [NFPA 54-12:7.1.6]1210.1.6.1 Conduit with One End TerminatingOutdoors. The conduit shall extend into a normallyusable and accessible portion of the building and, atthe point where the conduit terminates in the build-ing, the space between the conduit and the gas pip-ing shall be sealed to prevent the possible entranceof a gas leakage. Where the end sealing is of a typethat will retain the full pressure of the pipe, the con-duit shall be designed for the same pressure as thepipe. The conduit shall extend not less than 4 inches(102 mm) outside the building, be vented outdoorsabove finished ground level, and be installed so as toprevent the entrance of water and insects. [NFPA54:7.1.6.1]1210.1.6.2 Conduit with Both Ends TerminatingIndoors. Where the conduit originates and termi-nates within the same building, the conduit shalloriginate and terminate in an accessible portion ofthe building and shall not be sealed. [NFPA54:7.1.6.2]
1210.1.7 Plastic Piping. Plastic piping shall be installedoutdoors, underground only.Exceptions:(1) Plastic piping shall be permitted to terminate above-
ground where an anodeless riser is used.
(2) Plastic piping shall be permitted to terminate with awall head adapter aboveground in buildings, in-cluding basements, where the plastic piping is in-serted in a piping material permitted for use inbuildings. [NFPA 54-12:7.1.7.1]1210.1.7.1 Connections Between Metallic andPlastic Piping. Connections made between metal-lic and plastic piping shall be made with fittings thatare in accordance with one of the following:(1) ASTM D 2513(2) ASTM F 1973(3) ASTM F 2509 [NFPA 54:7.1.7.2]1210.1.7.2 Tracer Wire.An electrically continuouscorrosion-resistant tracer wire (not less than AWG14) or tape shall be buried with the plastic pipe tofacilitate locating. One end shall be brought above-ground at a building wall or riser. [NFPA 54:7.1.7.3]
1210.2 Installation of Piping. Piping installed abovegroundshall be securely supported and located where it will be pro-tected from physical damage. Where passing through an ex-terior wall, the piping shall be protected against corrosion bycoating or wrapping with an inert material approved for suchapplications. The piping shall be sealed around its circumfer-ence at the point of the exterior penetration to prevent theentry of water, insects, and rodents. Where piping is encasedin a protective pipe sleeve, the annular spaces between thegas piping and the sleeve and between the sleeve and the wallopening shall be sealed. [NFPA 54-12:7.2.1]
1210.2.1 Building Structure. The installation of gas pip-ing shall not cause structural stresses within buildingcomponents to exceed allowable design limits. Approvalshall be obtained before beams or joists are cut ornotched. [NFPA 54:7.2.2]
Permission shall be obtained from the AuthorityHaving Jurisdiction.1210.2.2 Gas Piping to be Sloped. Piping for other thandry gas conditions shall be sloped not less than 1⁄4 inch in15 feet (1.4 mm/m) to prevent traps. [NFPA 54:7.2.4]
1210.2.2.1 Ceiling Locations. Gas piping shall bepermitted to be installed in accessible spaces be-tween a fixed ceiling and a dropped ceiling, whetheror not such spaces are used as a plenum. Valves shallnot be located in such spaces.Exception: Appliance shutoff valves required bythis code shall be permitted to be installed in acces-sible spaces containing vented appliances.
1210.2.3 Prohibited Locations. Gas piping inside a build-ing shall not be installed in or through a clothes chute,chimney or gas vent, dumbwaiter, elevator shaft, or airduct, other than combustion air ducts. [NFPA 54:7.2.5]Exception: Ducts used to provide ventilation air in ac-cordance with Section 506.0 or to above-ceiling spaces inaccordance with Section 1210.2.2.1.
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1210.2.4 Hangers, Supports, and Anchors. Piping shallbe supported with metal pipe hooks, metal pipe straps,metal bands, metal brackets, metal hangers, or buildingstructural components; approved for the size of piping; ofadequate strength and quality; and located at intervals soas to prevent or damp out excessive vibration. Pipingshall be anchored to prevent undue strains on connectedappliances and equipment and shall not be supported byother piping. Pipe hangers and supports shall complywith the requirements of MSS SP-58. [NFPA 54:7.2.6.1]
1210.2.4.1 Spacing. Spacing of supports in gas pip-ing installations shall not exceed the distance shownin Table 1210.2.4.1. Spacing of supports for CSSTshall be in accordance with the CSST manufac-turer’s instructions. [NFPA 54:7.2.6.2]
1210.2.4.2 Expansion and Contraction. Supports,hangers, and anchors shall be installed so as not tointerfere with the free expansion and contraction ofthe piping between anchors. Parts of the supportingsystem shall be designed and installed so they arenot disengaged by movement of the supported pip-ing. [NFPA 54:7.2.6.3]
1210.2.5 Removal of Piping. Where piping containinggas is to be removed, the line shall be first disconnectedfrom sources of gas and then thoroughly purged with air,water, or inert gas before cutting or welding is done.[NFPA 54-12:7.2.6]
1210.3 Concealed Piping in Buildings. Gas piping in con-cealed locations shall be installed in accordance with this sec-tion. [NFPA 54:7.3.1]
1210.3.1 Connections. Where gas piping is to be con-cealed, connections shall be of the following type:(1) Pipe fittings such as elbows, tees, couplings, and
right/left nipple/couplings.(2) Joining tubing by brazing (see Section 1208.5.8.2).
[NFPA 54:7.3.2(2)](3) Fittings listed for use in concealed spaces or that
have been demonstrated to sustain, without leakage,forces due to temperature expansion or contraction,vibration, or fatigue based on their geographic loca-tion, application, or operation. [NFPA 54:7.3.2(3)]
(4) Where necessary to insert fittings in gas pipe thathas been installed in a concealed location, the pipeshall be reconnected by welding, flanges, or the useof a right/left nipple/coupling.
1210.3.2 Piping in Partitions. Concealed gas pipingshall not be located in solid partitions. [NFPA 54:7.3.3]1210.3.3 Tubing in Partitions. This provision shall notapply to tubing that pierces walls, floors, or partitions.Tubing installed vertically and horizontally inside hol-low walls or partitions without protection along its en-tire concealed length shall be in accordance with thefollowing requirements:(1) A steel striker barrier not less than 0.0508 of an inch
(1.3 mm) thick, or equivalent, shall be installed be-tween the tubing and the finished wall and extendnot less than 4 inches (102 mm) beyond concealedpenetrations of plates, firestops, wall studs, and sim-ilar construction features.
(2) The tubing shall be installed in single runs and shallnot be rigidly secured. [NFPA 54:7.3.4]
1210.3.4 Piping in Floors. In industrial occupancies, gaspiping in solid floors such as concrete shall be laid inchannels in the floor and covered to permit access to thepiping with minimum damage to the building. Wherepiping in floor channels is exposed to excessive moistureor corrosive substances, the piping shall be protected inan approved manner. [NFPA 54:7.3.5.1]Exception: In other than industrial occupancies andwhere approved by the Authority Having Jurisdiction,gas piping embedded in concrete floor slabs constructedwith portland cement shall be surrounded with not lessthan 11⁄2 inches (38 mm) of concrete and shall not be inphysical contact with other metallic structures such as re-inforcing rods or electrically neutral conductors. Piping,fittings, and risers shall be protected against corrosion inaccordance with Section 1208.5.6. Piping shall not beembedded in concrete slabs containing quick-set addi-tives or cinder aggregate. [NFPA 54:7.3.5.2]
1210.4 Piping in Vertical Chases. Where gas piping ex-ceeding 5 psi (34 kPa) is located within vertical chases in ac-cordance with Section 1210.5(2), the requirements of Section1210.4.1 through Section 1210.4.3 shall apply. [NFPA 54:7.4]
1210.4.1 Pressure Reduction.Where pressure reductionis required in branch connections in accordance withSection 1210.5, such reduction shall take place either in-side the chase or immediately adjacent to the outside wallof the chase. Regulator venting and downstream over-pressure protection shall comply with Section 1208.7.1and Section 1208.7.5. The regulator shall be accessiblefor service and repair, and vented in accordance with oneof the following:(1) Where the fuel gas is lighter than air, regulators
equipped with a vent limiting means shall be per-mitted to be vented into the chase. Regulators notequipped with a vent limiting means shall be per-mitted to be vented either directly to the outdoors orto a point within the top 1 foot (305 mm) of thechase.
STEEL PIPE, NOMINAL SIZEOF PIPE(inches)
SPACING OFSUPPORTS(feet)
NOMINAL SIZEOF TUBING
SMOOTH-WALL(inches O.D.)
SPACING OFSUPPORTS(feet)
1⁄2 6 1⁄2 43⁄4 or 1 8 5⁄8 or 3⁄4 6
11⁄4 or larger(horizontal)
10 7⁄8 or 1(horizontal)
8
11⁄4 or larger (vertical)
Every floorlevel
1 or larger (vertical)
Every floorlevel
TABLE 1210.2.4.1SUPPORT OF PIPING[NFPA 54: TABLE 7.2.6.2]
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm
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(2) Where the fuel gas is heavier than air, the regulatorvent shall be vented directly to the outdoors. [NFPA54:7.4.1]
1210.4.2 Construction. Chase construction shall com-ply with local building codes with respect to fire resist-ance and protection of horizontal and vertical openings.[NFPA 54:7.4.2]1210.4.3 Ventilation. A chase shall be ventilated to theoutdoors and at the top. The openings shall have a mini-mum free area [in square inches (m2)] equal to the prod-uct of one-half of the maximum pressure in the piping[in psi (kPa)] times the largest nominal diameter of thatpiping [in inches (mm)], or the cross-sectional area ofthe chase, whichever is smaller. Where more than onefuel gas piping system is present, the free area for eachsystem shall be calculated and the largest area used.[NFPA 54:7.4.3]
1210.5 Maximum Design Operating Pressure. The maxi-mum design operating pressure for piping systems located in-side buildings shall not exceed 5 psi (34 kPa) unless one ormore of the following conditions are met:(1) The piping system is welded.(2) The piping is located in a ventilated chase or otherwise en-
closed for protection against accidental gas accumulation.(3) The piping is located inside buildings or separate areas of
buildings used exclusively for one of the following:(a) Industrial processing or heating(b) Research(c) Warehousing(d) Boiler or mechanical equipment rooms
(4) The piping is a temporary installation for buildings underconstruction.
(5) The piping serves appliances or equipment used for agri-cultural purposes.
(6) The piping system is an LP-Gas piping system with a de-sign operating pressure exceeding 20 psi (138 kPa) andin accordance with NFPA 58. LP-Gas systems designedto operate below -5°F (-21°C) or with butane or apropane-butane mix shall be designed to either accom-modate liquid LP-Gas or to prevent LP-Gas vapor fromcondensing back into liquid. [NFPA 54:5.5]1210.5.1 Liquefied Petroleum Gas Systems. The max-imum operating pressure of LP-Gas piping systems shallbe:(1) In accordance with Section 1210.4.1.(2) In accordance with NFPA 58, where the pressure ex-
ceeds 20 psi (138 kPa).(3) Designed to either accommodate liquid LP-Gas or
prevent LP-Gas vapor from condensing back into aliquid in buildings having systems designed to op-erate below -5°F (-21°C) or with butane or apropane–butane mix.
1210.6 Appliance Overpressure Protection. The maximumoperating pressure for piping systems serving appliances de-
signed to operate at 14 inches water column (3.5 kPa) inletpressure or less shall be 2 pounds-force per square inch gauge(psig) (14 kPa) unless an over-pressure protection device de-signed to limit pressure at the appliance to 2 psig (14 kPa) uponfailure of the line gas pressure regulator is installed.1210.7 Gas Pipe Turns. Changes in direction of gas pipeshall be made by the use of fittings, factory bends, or fieldbends. [NFPA 54:7.5]
1210.7.1 Metallic Pipe. Metallic pipe bends shall com-ply with the following:(1) Bends shall be made with bending equipment and
procedures intended for that purpose.(2) Bends shall be smooth and free from buckling,
cracks, or other evidence of mechanical damage.(3) The longitudinal weld of the pipe shall be near the
neutral axis of the bend.(4) The pipe shall not be bent through an arc of more
than 90 degrees (1.57 rad).(5) The inside radius of a bend shall be not less than six
times the outside diameter of the pipe. [NFPA54:7.5.1]
1210.7.2 Plastic Pipe. Plastic pipe bends shall complywith the following:(1) The pipe shall not be damaged, and the internal di-
ameter of the pipe shall not be effectively reduced.(2) Joints shall not be located in pipe bends.(3) The radius of the inner curve of such bends shall be
not less than 25 times the inside diameter of the pipe.(4) Where the piping manufacturer specifies the use of
special bending equipment or procedures, suchequipment or procedures shall be used. [NFPA54:7.5.2]
1210.7.3 Elbows. Factory-made welding elbows ortransverse segments cut therefrom shall have an arclength measured along the crotch of not less than 1 inch(25.4 mm) for pipe sizes 2 inches (50 mm) and larger.[NFPA 54:7.5.3]
1210.8 Drips and Sediment Traps.1210.8.1 Provide Drips Where Necessary. For otherthan dry gas conditions, a drip shall be provided at apoint in the line of pipe where condensate is capable ofcollecting. Where required by the Authority Having Ju-risdiction or the serving gas supplier, a drip shall also beprovided at the outlet of the meter. This drip shall be soinstalled as to constitute a trap wherein an accumulationof condensate will shut off the flow of gas before it willrun back into the meter. [NFPA 54:7.6.1]1210.8.2 Location of Drips. Drips shall be installed insuch locations that they will be readily accessible to per-mit cleaning or emptying. A drip shall not be locatedwhere the condensate is likely to freeze. [NFPA 54:7.6.2]1210.8.3 Sediment Traps. The installation of sedimenttraps shall comply with Section 1211.8. [NFPA 54-12:7.6.3]
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1210.9 Outlets. Outlets shall be located and installed in ac-cordance with the following requirements:(1) The outlet fittings or piping shall be securely fastened in
place.(2) Outlets shall not be located behind doors.(3) Outlets shall be located far enough from floors, walls,
patios, slabs, and ceilings to permit the use of wrencheswithout straining, bending, or damaging the piping.
(4) The unthreaded portion of gas piping outlets shall extendnot less than 1 inch (25.4 mm) through finished ceilingsor indoor or outdoor walls.
(5) The unthreaded portion of gas piping outlets shall extendnot less than 2 inches (51 mm) above the surface of floorsor outdoor patios or slabs.
(6) The provisions of Section 1210.9(4) and Section1210.9(5) shall not apply to listed quick-disconnect de-vices of the flush-mounted type or listed gas convenienceoutlets. Such devices shall be installed in accordancewith the manufacturer’s installation instructions. [NFPA54:7.7.1]1210.9.1 Cap Outlets. Each outlet, including a valve,shall be closed gastight with a threaded plug or cap im-mediately after installation and shall be left closed untilthe appliance is connected thereto. Where an appliance isdisconnected from an outlet, and the outlet is not to beused again immediately, it shall be closed gastight.Exceptions:(1) Laboratory equipment installed in accordance with
Section 1211.3.1 shall be permitted.(2) The use of a listed quick-disconnect device with in-
tegral shutoff or listed gas convenience outlet shallbe permitted. [NFPA 54:7.7.2.1]1210.9.1.1 Appliance Shutoff Valves. Applianceshutoff valves installed in fireplaces shall be re-moved and the piping capped gastight where thefireplace is used for solid-fuel burning. [NFPA54:7.7.2.2]
1210.10 Branch Pipe Connection. Where a branch outlet isplaced on a main supply line before it is known what size pipewill be connected to it, the outlet shall be of the same size asthe line that supplies it. [NFPA 54:7.8]1210.11 Manual Gas Shutoff Valves. An accessible gasshutoff valve shall be provided upstream of each gas pressureregulator. Where two gas pressure regulators are installed inseries in a single gas line, a manual valve shall not be requiredat the second regulator. [NFPA 54:7.9.1]
1210.11.1 Valves Controlling Multiple Systems. Maingas shutoff valves controlling several gas piping systemsshall be readily accessible for operation and installed soas to be protected from physical damage. They shall bemarked with a metal tag or other permanent means at-tached by the installing agency so that the gas piping sys-tems supplied through them are readily identified. [NFPA54:7.9.2.1]
1210.11.1.1 Shutoff Valves for Multiple HouseLines. In multiple-tenant buildings supplied througha master meter, or through one service regulatorwhere a meter is not provided, or where meters orservice regulators are not readily accessible from theequipment location, an individual shutoff valve foreach apartment or tenant line shall be provided at aconvenient point of general accessibility. In a com-mon system serving a number of individual build-ings, shutoff valves shall be installed at eachbuilding. [NFPA 54:7.9.2.2]
1210.11.2 Emergency Shutoff Valves. An exterior shut-off valve to permit turning off the gas supply to eachbuilding in an emergency shall be provided. The emer-gency shutoff valves shall be plainly marked as such andtheir locations posted as required by the Authority Hav-ing Jurisdiction. [NFPA 54:7.9.2.3]1210.11.3 Shutoff Valve for Laboratories. Each labora-tory space containing two or more gas outlets installed ontables, benches, or in hoods in educational, research, com-mercial and industrial occupancies shall have a singleshutoff valve through which such gas outlets are supplied.The shutoff valve shall be accessible and shall be locatedwithin the laboratory or located adjacent to the laboratory’segress door and shall be identified. [NFPA 54:7.9.2.4]
1210.12 Prohibited Devices. No device shall be placed insidethe gas piping or fittings that will reduce the cross-sectionalarea or otherwise obstruct the free flow of gas, except wherean allowance in the piping system design has been made forsuch a device and where approved by the Authority HavingJurisdiction. [NFPA 54:7.10]1210.13 Systems Containing Gas-Air Mixtures Outsidethe Flammable Range. Where gas-air mixing machines areemployed to produce mixtures above or below the flammablerange, they shall be provided with stops to prevent adjustmentof the mixture to within or approaching the flammable range.[NFPA 54:7.11]1210.14 Systems Containing Flammable Gas-Air Mix-tures. Systems containing flammable gas-air mixtures shallbe in accordance with NFPA 54.1210.15 Electrical Bonding and Grounding.
1210.15.1 Pipe and Tubing other than CSST. Eachaboveground portion of a gas piping system other thanCSST that is likely to become energized shall be electri-cally continuous and bonded to an effective ground-faultcurrent path. Gas piping, other than CSST, shall be con-sidered to be bonded where it is connected to appliancesthat are connected to the appliance grounding conductorof the circuit supplying that appliance. [NFPA 54:7.13.1]1210.15.2 Bonding of CSST Gas Piping. CSST gas pip-ing systems shall be bonded to the electrical servicegrounding electrode system. The bonding jumper shallconnect to a metallic pipe or fitting between the point ofdelivery and the first downstream CSST fitting. Thebonding jumper shall be not smaller than 6 AWG copperwire or equivalent. Gas piping systems that contain oneor more segments of CSST shall be bonded in accor-dance with this section. [NFPA 54-12:7.13.2]
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1210.15.3 Grounding Conductor or Electrode. Gaspiping shall not be used as a grounding conductor or elec-trode. [NFPA 54-12:7.13.3]1210.15.4 Lightning Protection System. Where a light-ning protection system is installed, the bonding of thegas piping system shall be in accordance with NFPA 780.[NFPA 54:7.13.4]
1210.16 Electrical Circuits. Electrical circuits shall not uti-lize gas piping or components as conductors.Exception: Low-voltage (50V or less) control circuits, igni-tion circuits, and electronic flame detection device circuitsshall be permitted to make use of piping or components as apart of an electric circuit. [NFPA 54:7.14]1210.17 Electrical Connections. Electrical connections be-tween wiring and electrically operated control devices in apiping system shall comply with the requirements of Cali-fornia Electrical Code.
1210.17.1 Safety Control. An essential safety controldepending on electric current as the operating mediumshall be of a type that will shut off (fail safe) the flow ofgas in the event of current failure. [NFPA 54:7.15.2]
1210.18 Earthquake-Actuated Gas Shutoff Valves. Earth-quake-actuated gas shutoff valves, certified by the State Archi-tect as conforming to California Referenced Standards Code(CRSC), Standard 12-12-1, shall be provided for buildingswhen such installation is required by local ordinance. Earth-quake-actuated gas shutoff valves which have not been certifiedby the State Architect shall be prohibited in buildings open tothe public under mandatory installation by local ordinance.
An earthquake-actuated gas shutoff valve is a valve forinstallation in a gas piping system and designed to automat-ically shut off the gas at the location of the valve in the eventof a seismic disturbance.
1211.0 Appliance Connections to Building Piping.1211.1 Connecting Gas Appliances. Appliances shall beconnected to the building piping in accordance with Section1211.5 through Section 1211.7 by one of the following [NFPA54:9.6.1]:(1) Rigid metallic pipe and fittings. [NFPA 54:9.6.1(1)](2) Semirigid metallic tubing and metallic fittings. Alu-
minum alloy tubing shall not be used in exterior loca-tions. [NFPA 54:9.6.1(2)]
(3) A listed connector installed in accordance with CSAZ21.24. The connector shall be installed in accordancewith the manufacturer’s installation instructions and shallbe in the same room as the appliance. One connectorshall be installed for each appliance. [NFPA 54:9.6.1(3)]
(4) CSST where installed in accordance with the manufac-turer’s installation instructions. [NFPA 54:9.6.1(5)]
(5) Listed nonmetallic gas hose connectors installed in ac-cordance with Section 1211.3. [NFPA 54:9.6.1(6)]
(6) Commercial cooking appliances that are moved forcleaning and sanitation purposes shall be installed in ac-cordance with the connector manufacturer’s installationinstructions using a listed appliance connector in accor-
dance with CSA Z21.69. The commercial cooking ap-pliance connector installation shall be configured in ac-cordance with the manufacturer’s installationinstructions. [NFPA 54:9.6.1.1]
(7) Movement of appliances with casters shall be limited bya restraining device installed in accordance with the con-nector and appliance manufacturer’s installation instruc-tions. [NFPA 54:9.6.1.2]
(8) In Section 1211.1(2), Section 1211.1(3), and Section1211.1(5), the connector or tubing shall be installed soas to be protected against physical and thermal damage.Aluminum alloy tubing and connectors shall be coatedto protect against external corrosion where they are incontact with masonry, plaster, insulation, or are subject torepeated wettings by such liquids as water (except rain-water), detergents, or sewage. [NFPA 54:9.6.1(7)]
1211.2 Suspended Low-Intensity Infrared Tube Heaters.Suspended low-intensity infrared tube heaters shall be con-nected to the building piping system with a connector listedfor the application in accordance with CSA Z21.24 and thefollowing requirements:(1) The connector shall be installed in accordance with the
tube heater installation instructions, and shall be in thesame room as the appliance.
(2) One connector shall be used per appliance. [NFPA54:9.6.1.3]
1211.3 Use of Nonmetallic Gas Hose Connectors. Listednonmetallic gas hose connectors shall be installed in accor-dance with the manufacturer’s installation instructions and inaccordance with Section 1211.3.1 and Section 1211.3.2.[NFPA 54:9.6.2]
1211.3.1 Indoor. Indoor gas hose connectors shall beused to connect laboratory, shop, and ironing equipmentrequiring mobility during operation. An appliance shut-off valve shall be installed where the connector is at-tached to the building piping. The connector shall be ofminimum length and shall not exceed 6 feet (1829 mm).The connector shall not be concealed and shall not ex-tend from one room to another or pass through wall par-titions, ceilings, or floors. [NFPA 54:9.6.2(1)]1211.3.2 Outdoor. Where outdoor gas hose connectorsare used to connect portable outdoor appliances, the con-nector shall be listed in accordance with CSA Z21.54.An appliance shutoff valve, a listed quick-disconnect de-vice, or a listed gas convenience outlet shall be installedwhere the connector is attached to the supply piping andin such a manner to prevent the accumulation of wateror foreign matter. This connection shall be made only inthe outdoor area where the appliance is to be used.[NFPA 54-12:9.6.2(2)]
The connector length shall not exceed 15 feet (4572mm).
1211.4 Connection of Portable and Mobile Industrial GasAppliances.
1211.4.1 Flexible Hose. Where portable industrial ap-pliances, or appliances requiring mobility or subject tovibration, are connected to the building gas piping sys-
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tem by the use of a flexible hose, the hose shall be ap-proved and safe for the conditions under which it is used.[NFPA 54:9.6.3.1]1211.4.2 Swivel Joints or Couplings. Where industrialappliances requiring mobility are connected to the rigidpiping by the use of swivel joints or couplings, the swiveljoints or couplings shall be approved for the service re-quired, and only the minimum number required shall beinstalled. [NFPA 54:9.6.3.2]1211.4.3 Metal Flexible Connectors. Where industrialappliances subject to vibration are connected to the build-ing piping system by the use of metal flexible connec-tors, the connectors shall be approved for the servicerequired. [NFPA 54:9.6.3.3]1211.4.4 Flexible Connectors. Where flexible connec-tions are used, they shall be of the minimum practicallength and shall not extend from one room to another orpass through walls, partitions, ceilings, or floors. Flexi-ble connections shall not be used in a concealed location.They shall be protected against physical or thermal dam-age and shall be provided with gas shutoff valves in read-ily accessible locations in rigid piping upstream from theflexible connections. [NFPA 54:9.6.3.4]
1211.5 Appliance Shutoff Valves and Connections. Appli-ances connected to a piping system shall have an accessible,approved manual shutoff valve with a nondisplaceable valvemember, or a listed gas convenience outlet installed within 6feet (1829 mm) of the appliance it serves. Where a connectoris used, the valve shall be installed upstream of the connector.A union or flanged connection shall be provided downstreamfrom this valve to permit removal of controls. Shutoff valvesserving decorative gas appliances shall be permitted to be in-stalled in fireplaces where listed for such use. [NFPA 54:9.6.4]Exceptions:(1) Shutoff valves shall be permitted to be accessibly located
inside or under an appliance where such appliance is re-moved without removal of the shutoff valve.
(2) Shutoff valves shall be permitted to be accessibly locatedinside wall heaters and wall furnaces listed for recessedinstallation where necessary maintenance is performedwithout removal of the shutoff valve.
1211.6 Quick-Disconnect Devices. Quick-disconnect devicesused to connect appliances to the building piping shall belisted. Where installed indoors, an approved manual shutoffvalve with a non-displaceable valve member shall be installedupstream of the quick-disconnect device. [NFPA 54:9.6.5]1211.7 Gas Convenience Outlets. Appliances shall be per-mitted to be connected to the building piping by means of alisted gas convenience outlet, in conjunction with a listed ap-pliance connector, installed in accordance with the manufac-turer’s installation instructions.
Gas convenience outlets shall be listed in accordancewith CSA Z21.90 and installed in accordance with the man-ufacturer’s installation instructions. [NFPA 54:9.6.6]1211.8 Sediment Trap. Where a sediment trap is not incor-porated as a part of the appliance, a sediment trap shall be in-stalled downstream of the appliance shutoff valve as close to
the inlet of the appliance as practical at the time of applianceinstallation. The sediment trap shall be either a tee fitting witha capped nipple in the bottom outlet, as illustrated in Figure1211.8, or other device recognized as an effective sedimenttrap. Illuminating appliances, ranges, clothes dryers, decora-tive appliances for installation in vented fireplaces, gas fire-places, and outdoor grills shall not be required to be soequipped. [NFPA 54:9.6.7]
1211.9 Installation of Piping. Piping shall be installed in amanner not to interfere with inspection, maintenance, or serv-icing of the appliance. [NFPA 54:9.6.8]
1212.0 Liquefied Petroleum Gas Facilities and Piping.1212.1 General. Liquefied petroleum gas facilities shall com-ply with NFPA 58.
1213.0 Pressure Testing and Inspection.1213.1 Piping Installations. Prior to acceptance and initialoperation, piping installations shall be visually inspected andpressure-tested to determine that the materials, design, fabri-cation, and installation practices are in accordance with the re-quirements of this code. [NFPA 54-12:8.1.1.1]
1213.1.1 Inspection Requirements. Inspection shall con-sist of visual examination during or after manufacture, fab-rication, assembly, or pressure tests. [NFPA 54-12:8.1.1.2]1213.1.2 Repairs and Additions. Where repairs or ad-ditions are made following the pressure test, the affectedpiping shall be tested. Minor repairs and additions arenot required to be pressure-tested provided that the workis inspected and connections are tested with a noncorro-sive leak-detecting fluid or other leak-detecting methodsapproved by the Authority Having Jurisdiction. [NFPA54:8.1.1.3]1213.1.3 New Branches. Where new branches are in-stalled from the point of delivery to new appliances, the
For SI units: 1 inch = 25.4 mm
FIGURE 1211.8METHOD OF INSTALLING A TEE FITTING SEDIMENT TRAP[NFPA 54: FIGURE 9.6.7]
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newly installed branches shall be required to be pressure-tested. Connections between the new piping and the ex-isting piping shall be tested with a noncorrosiveleak-detecting fluid or approved leak-detecting methods.[NFPA 54:8.1.1.4]1213.1.4 Piping System. A piping system shall be testedas a complete unit or in sections. Under no circumstancesshall a valve in a line be used as a bulkhead between gasin one section of the piping system and test medium in anadjacent section, unless two valves are installed in serieswith a valved "telltale" located between these valves. Avalve shall not be subjected to the test pressure unless itis determined that the valve, including the valve-closingmechanism, is designed to safely withstand the pressure.[NFPA 54:8.1.1.5]1213.1.5 Regulators and Valves. Regulator and valveassemblies fabricated independently of the piping sys-tem in which they are to be installed shall be permitted tobe tested with inert gas or air at the time of fabrication.[NFPA 54:8.1.1.6]1213.1.6 Test Medium. The test medium shall be air, ni-trogen, carbon dioxide, or an inert gas. OXYGENSHALL NEVER BE USED. [NFPA 54:8.1.2]
1213.2 Test Preparation.1213.2.1 Pipe Joints. Pipe joints, including welds, shallbe left exposed for examination during the test.Exception: Covered or concealed pipe end joints thathave been previously tested in accordance with this code.[NFPA 54:8.1.3.1]1213.2.2 Expansion Joints. Expansion joints shall beprovided with temporary restraints, where required, forthe additional thrust load under test. [NFPA 54:8.1.3.2]1213.2.3 Appliances and Equipment. Appliances andequipment that are not to be included in the test shall beeither disconnected from the piping or isolated by blanks,blind flanges, or caps. Flanged joints at which blinds areinserted to blank off other equipment during the test shallnot be required to be tested. [NFPA 54:8.1.3.3]1213.2.4 Designed for (less than) Operating Pressures.Where the piping system is connected to appliances,equipment, or equipment components designed for op-erating pressures of less than the test pressure, such ap-pliances, equipment, or equipment components shall beisolated from the piping system by disconnecting themand capping the outlets. [NFPA 54:8.1.3.4]1213.2.5 Designed for (equal to or more than) Oper-ating Pressures. Where the piping system is connectedto appliances or equipment designed for operating pres-sures equal to or greater than the test pressure, such ap-pliances and equipment shall be isolated from the pipingsystem by closing the individual appliance or equipmentshutoff valve(s). [NFPA 54:8.1.3.5]1213.2.6 Safety. Testing of piping systems shall be per-formed in a manner that protects the safety of employeesand the public during the test. [NFPA 54-12:8.1.3.6]
1213.3 Test Pressure. This inspection shall include an air,CO2, or nitrogen pressure test, at which time the gas pipingshall stand a pressure of not less than 10 psi (69 kPa) gaugepressure. Test pressures shall be held for a length of time sat-isfactory to the Authority Having Jurisdiction, but in no caseless than 15 minutes with no perceptible drop in pressure. Forwelded piping, and for piping carrying gas at pressures in ex-cess of 14 inches water column pressure (3.5 kPa), the testpressure shall be not less than 60 psi (414 kPa) and shall becontinued for a length of time satisfactory to the AuthorityHaving Jurisdiction, but in no case for less than 30 minutes.These tests shall be made using air, CO2, or nitrogen pressureand shall be made in the presence of the Authority Having Ju-risdiction. Necessary apparatus for conducting tests shall befurnished by the permit holder. Test gauges used in conduct-ing tests shall be in accordance with Section 318.0.1213.4 Detection of Leaks and Defects. The piping systemshall withstand the test pressure specified without showingevidence of leakage or other defects. Reduction of test pres-sures as indicated by pressure gauges shall be deemed to in-dicate the presence of a leak unless such reduction is readilyattributed to some other cause. [NFPA 54:8.1.5.1]
1213.4.1 Detecting Leaks. The leakage shall be locatedby means of an approved gas detector, a noncorrosiveleak detection fluid, or other approved leak detectionmethods. Matches, candles, open flames, or other meth-ods that provide a source of ignition shall not be used.[NFPA 54:8.1.5.2]1213.4.2 Repair or Replace.Where leakage or other de-fects are located, the affected portion of the piping sys-tem shall be repaired or replaced and retested. [NFPA54-12:8.1.5.3]
1213.5 Piping System Leak Test. Leak checks using fuel gasshall be permitted in piping systems that have been pressure-tested in accordance with Section 1213.0. [NFPA 54:8.2.1]
1213.5.1 Turning Gas On. During the process of turn-ing gas on into a system of new gas piping, the entire sys-tem shall be inspected to determine that there are no openfittings or ends and that valves at unused outlets areclosed and plugged or capped. [NFPA 54:8.2.2]1213.5.2 Leak Check. Immediately after the gas isturned on into a new system or into a system that hasbeen initially restored after an interruption of service, thepiping system shall be checked for leakage. Where leak-age is indicated, the gas supply shall be shut off until thenecessary repairs have been made. [NFPA 54:8.2.3]1213.5.3 Placing Appliances and Equipment in Oper-ation. Appliances and equipment shall not be placed inoperation until after the piping system has been checkedin accordance with Section 1213.5.2; connections to theappliance are checked for leakage; and purged in accor-dance with Section 1213.6. [NFPA 54-12:8.2.4]
1213.6 Purging Requirements. The purging of piping shallbe in accordance with Section 1213.6.1 through Section1213.6.3. [NFPA 54-12:8.3]
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1213.6.1 Piping Systems Required to be Purged Out-doors. The purging of piping systems shall be in accor-dance with the provisions of Section 1213.6.1.1 throughSection 1213.6.1.4 where the piping system meets eitherof the following:(1) The design operating gas pressure exceeds 2 psig
(14 kPa).(2) The piping being purged contains one or more sec-
tions of pipe or tubing meeting the size and lengthcriteria of Table 1213.6.1. [NFPA 54-12:8.3.1]
1213.6.1.1 Removal from Service. Where existinggas piping is opened, the section that is opened shallbe isolated from the gas supply and the line pressurevented in accordance with Section 1213.6.1.3.Where gas piping meeting the criteria of Table1213.6.1 is removed from service, the residual fuelgas in the piping shall be displaced with an inert gas.[NFPA 54-12:8.3.1.1]1213.6.1.2 Placing in Operation. Where gas pip-ing containing air and meeting the criteria of Table1213.6.1 is placed in operation, the air in the pipingshall first be displaced with an inert gas. The inertgas shall then be displaced with fuel gas in accor-dance with Section 1213.6.1.3. [NFPA 54-12:8.3.1.2]1213.6.1.3 Outdoor Discharge of Purged Gases.The open end of a piping system being pressurevented or purged shall discharge directly to an out-door location. Purging operations shall comply withthe following requirements:(1) The point of discharge shall be controlled with
a shutoff valve.(2) The point of discharge shall be located not less
than 10 feet (3048 mm) from sources of igni-tion, not less than 10 feet (3048 mm) frombuilding openings, and not less than 25 feet(7620 mm) from mechanical air intake open-ings.
(3) During discharge, the open point of dischargeshall be continuously attended and monitoredwith a combustible gas indicator that is in ac-cordance with Section 1213.6.1.4.
(4) Purging operations introducing fuel gas shall bestopped where 90 percent fuel gas by volume isdetected within the pipe.
(5) Persons not involved in the purging operationsshall be evacuated from areas within 10 feet(3048 mm) of the point of discharge. [NFPA 54-12:8.3.1.3]
1213.6.1.4 Combustible Gas Indicator. Com-bustible gas indicators shall be listed and shall becalibrated in accordance with the manufacturer’s in-structions. Combustible gas indicators shall numer-ically display a volume scale from 0 percent to 100percent in 1 percent or smaller increments. [NFPA54-12:8.3.1.4]
1213.6.2 Piping Systems Allowed to be Purged In-doors or Outdoors. The purging of piping systems shallbe in accordance with the provisions of Section1213.6.2.1 where the piping system meets both of thefollowing:(1) The design operating pressure is 2 psig (14 kPa) or
less.(2) The piping being purged is constructed entirely from
pipe or tubing not meeting the size and length crite-ria of Table 1213.6.1. [NFPA 54-12:8.3.2]1213.6.2.1 Purging Procedure. The piping systemshall be purged in accordance with one or more ofthe following:(1) The piping shall be purged with fuel gas and
shall discharge to the outdoors.(2) The piping shall be purged with fuel gas and
shall discharge to the indoors or outdoorsthrough an appliance burner not located in acombustion chamber. Such burner shall be pro-vided with a continuous source of ignition.
(3) The piping shall be purged with fuel gas andshall discharge to the indoors or outdoorsthrough a burner that has a continuous sourceof ignition and that is designed for such pur-pose.
(4) The piping shall be purged with fuel gas that isdischarge to the indoors or outdoors, and thepoint of discharge shall be monitored with alisted combustible gas detector in accordancewith Section 1213.6.2.2. Purging shall bestopped where fuel gas is detected.
(5) The piping shall be purged by the gas supplierin accordance with written procedures. [NFPA54-12:8.3.2.1]
1213.6.2.2 Combustible Gas Detector. Combustiblegas detectors shall be listed and shall be calibrated ortested in accordance with the manufacturer’s instruc-tions. Combustible gas detectors shall be capable ofindicating the presence of fuel gas. [NFPA 54-12:8.3.2.2]
1213.6.3 Purging Appliances and Equipment. Afterthe piping system has been placed in operation, appli-
NOMINAL PIPINGSIZE (inches)
LENGTH OF PIPING (feet)
≥ 21⁄2 < 3 > 50≥ 3 < 4 > 30≥ 4 < 6 > 15≥ 6 < 8 > 10
≥ 8 Any length
TABLE 1213.6.1SIZE AND LENGTH OF PIPING[NFPA 54-12: TABLE 8.3.1]*
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm* CSST EHD size of 62 is equivalent to nominal 2 inches (50 mm) pipe or
tubing size.
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ances and equipment shall be purged before being placedinto operation. [NFPA 54-12:8.3.3]
1214.0 Interconnections Between Gas Piping Systems.1214.1 Interconnections Supplying Separate Users. Wheretwo or more meters, or two or more service regulators wheremeters are not provided, are located on the same premises andsupply separate users, the gas piping systems shall not be in-terconnected on the outlet side of the meters or service regu-lators. [NFPA 54:5.3.1]1214.2 Interconnections for Standby Fuels. Where supple-mentary gas for standby use is connected downstream from ameter or a service regulator where a meter is not provided, adevice to prevent backflow shall be installed. A three-wayvalve installed to admit the standby supply and at the sametime shut off the regular supply shall be permitted to be usedfor this purpose. [NFPA 54:5.3.2]
1215.0 Required Gas Supply.1215.1 General. The following regulations, shall complywith this section and Section 1216.0, shall be the standard forthe installation of gas piping. Natural gas regulations and ta-bles are based on the use of gas having a specific gravity of0.60, supplied at 6 to 8 inches water column (1.5 kPa to 1.9kPa) pressure at the outlet of the meter or regulator. For undi-luted liquefied petroleum gas, gas piping shall be permitted tobe sized at 11 inches water column (2.7 kPa) pressure at theoutlet of the meter or regulator and specific gravity of 1.50.Where gas of a different specific gravity is to be delivered, thespecific gravity conversion factors provided by the servinggas supplier shall be used in sizing piping systems from thepipe sizing tables in this chapter.1215.2 Volume. The hourly volume of gas required at eachpiping outlet shall be taken as not less than the maximumhourly rating as specified by the manufacturer of the appli-ance or appliances to be connected to each such outlet.1215.3 Gas Appliances. Where the gas appliances to be in-stalled have not been definitely specified, Table 1208.4.1 shallbe permitted to be used as a reference to estimate require-ments of typical appliances.
To obtain the cubic feet per hour (m3/h) of gas required,divide the input of the appliances by the average Btu (kW•h)heating value per cubic foot (m3) of the gas. The average Btu(kW•h) per cubic foot (m3) of the gas in the area of the in-stallation shall be permitted to be obtained from the servinggas supplier.1215.4 Size of Piping Outlets. The size of the supply pipingoutlet for a gas appliance shall be not less than 1⁄2 of an inch(15 mm).
The size of a piping outlet for a mobile home shall be notless than 3⁄4 of an inch (20 mm).
1216.0 Required Gas Piping Size.1216.1 Pipe Sizing Methods. Where the pipe size is to bedetermined using a method in Section 1216.1.1 through Sec-
tion 1216.1.3, the diameter of each pipe segment shall be ob-tained from the pipe sizing tables in Section 1216.2 or fromthe sizing equations in Section 1216.3. [NFPA 54:6.1]
1216.1.1 Longest Length Method. The pipe size of eachsection of gas piping shall be determined using thelongest length of piping from the point of delivery to themost remote outlet and the load of the section (see cal-culation example in Figure 1216.1.1). [NFPA 54:6.1.1]1216.1.2 Branch Length Method. Pipe shall be sizedas follows:(1) The pipe size of each section of the longest pipe run
from the point of delivery to the most remote outletshall be determined using the longest run of pipingand the load of the section.
(2) The pipe size of each section of branch piping notpreviously sized shall be determined using thelength of piping from the point of delivery to themost remote outlet in each branch and the load ofthe section. [NFPA 54:6.1.2]
1216.1.3 Hybrid Pressure. The pipe size for each sec-tion of higher pressure gas piping shall be determinedusing the longest length of piping from the point of de-livery to the most remote line pressure regulator. Thepipe size from the line pressure regulator to each outletshall be determined using the length of piping from theregulator to the most remote outlet served by the regula-tor. [NFPA 54:6.1.3]
1216.2 Tables for Sizing Gas Piping Systems. Table1216.2(1) through Table 1216.2(36) shall be used to size gaspiping in conjunction with one of the methods described inSection 1216.1.1 through Section 1216.1.3. [NFPA 54:6.2]1216.3 Sizing Equations. The inside diameter of smooth-wall pipe or tubing shall be determined by Equation1216.3(1), Equation 1216.3(2), Table 1216.3, and using theequivalent pipe length determined by Section 1216.1.1through Section 1216.1.3. [NFPA 54:6.4]
EQUATION 1216.3(1)LOW-PRESSURE GAS FORMULA (LESS THAN 1.5 psi)
[NFPA 54:6.4.1]
Where:D = inside diameter of pipe, inchesQ = input rate appliance(s), cubic feet per hour at 60˚F and
30 inch mercury columnL = equivalent length of pipe, feetΔH = pressure drop, inches water columnCr = in accordance with Table 1216.3
D = Q0.381
19.17 ( ΔH )0.206
Cr x L
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EQUATION 1216.3(2)HIGH-PRESSURE GAS FORMULA (1.5 psi AND ABOVE)
[NFPA 54:6.4.2]
Where:D = inside diameter of pipe, inchesQ = input rate appliance(s), cubic feet per hour at 60°F and
30 inch mercury columnP1 = upstream pressure, psia (P1 + 14.7)P2 = downstream pressure, psia (P2 + 14.7)L = equivalent length of pipe, feetCr = in accordance with Table 1216.3Y = in accordance with Table 1216.3
For SI units: 1 cubic foot = 0.0283 m3, 1000 British thermal units per hour =0.293 kW, 1 inch = 25 mm, 1 foot = 304.8 mm, 1 pound-force per squareinch = 6.8947 kPa, °C = (°F-32)/1.8, 1 inch mercury column = 3.39 kPa, 1inch water column = 0.249 kPa
1216.4 Sizing of Piping Sections. To determine the size ofeach section of pipe in a system within the range of Table1216.2(1) through Table 1216.2(36), proceed as follows:(1) Measure the length of the pipe from the gas meter loca-
tion to the most remote outlet on the system.(2) Select the length in feet column and row showing the dis-
tance, or the next longer distance where the table doesnot give the exact length.
(3) Starting at the most remote outlet, find in the row just se-lected the gas demand for that outlet. Where the exactfigure of demand is not shown, choose the next largerfigure in the row.
(4) At the top of this column will be found the correct sizeof pipe.
(5) Using this same row, proceed in a similar manner foreach section of pipe serving this outlet. For each sectionof pipe, determine the total gas demand supplied by thatsection. Where gas piping sections serve both heatingand cooling appliances and the installation prevents bothunits from operating simultaneously, the larger of the twodemand loads needs to be used in sizing these sections.
(6) Size each section of branch piping not previously sizedby measuring the distance from the gas meter location tothe most remote outlet in that branch and follow the pro-cedures of steps 2, 3, 4, and 5 above. Size branch pipingin the order of their distance from the meter location, be-ginning with the most distant outlet not previously sized.
1216.5 Engineering Methods. For conditions other thanthose covered by Section 1216.1, such as longer runs orgreater gas demands, the size of each gas piping system shallbe determined by standard engineering methods acceptableto the Authority Having Jurisdiction, and each such systemshall be so designed that the total pressure drop between themeter or other point of supply and an outlet where full de-mand is being supplied to all outlets, shall be in accordancewith the requirements of Section 1208.4.1216.6 Variable Gas Pressure. Where the gas pressure ex-ceeds 14 inches (3.5 kPa) or less than 6 inches (1.5 kPa) ofwater column, or where diversity demand factors are used,the design, pipe, sizing, materials, location, and use of suchsystems first shall be approved by the Authority Having Ju-risdiction. Piping systems designed for pressures exceedingthe serving gas supplier’s standard delivery pressure shallhave prior verification from the gas supplier of the availabil-ity of the design pressure.
D = Q0.381
18.93 [ (P12 – P2
2) • Y ]0.206
Cr x L
GASFORMULA FACTORSCr Y
Natural Gas 0.6094 0.9992Undiluted Propane 1.2462 0.9910
TABLE 1216.3Cr AND Y FOR NATURAL GAS AND UNDILUTED PROPANE
AT STANDARD CONDITIONS[NFPA 54: TABLE 6.4.2]
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FIGURE 1216.1.1 EXAMPLE ILLUSTRATING USE OF TABLES 1208.4.1 AND 1216.2(1)Problem: Determine the required pipe size of each section and outlet of the piping system shown in Figure 1216.1.1. Gas to beused has a specific gravity of 0.60 and 1100 British thermal units (Btu) per cubic foot (0.0114 kW•h/L), delivered at 8 inch watercolumn (1.9 kPa) pressure.
Solution:(1) Maximum gas demand of Outlet A —
32 cubic feet per hour (0.91 m3/h) (from Table 1208.4.1).Maximum gas demand of Outlet B —
3 cubic feet per hour (0.08 m3/h) (from Table 1208.4.1).Maximum gas demand of Outlet C —
59 cubic feet per hour (1.67 m3/h) (from Table 1208.4.1).Maximum gas demand of Outlet D —
136 cubic feet per hour (3.85 m3/h) [150 000 Btu/hour (44 kW) divided by 1100 Btu per cubic foot (0.0114kW•h/L)].
(2) The length of pipe from the gas meter to the most remote outlet (Outlet A) is 60 feet (18 288 mm).(3) Using the length in feet column row marked 60 feet (18 288 mm) in Table 1216.2(1):
Outlet A, supplying 32 cubic feet per hour (0.91 m3/h), requires 1⁄2 of an inch (15 mm) pipe. Section 1, supplying Outlets A and B, or 35 cubic feet per hour (0.99 m3/h) requires 1⁄2 of an inch (15 mm) pipe.Section 2, supplying Outlets A, B, and C, or 94 cubic feet per hour (2.66 m3/h) requires 3⁄4 of an inch (20 mm) pipe.Section 3, supplying Outlets A, B, C, and D, or 230 cubic feet per hour (6.51 m3/h), requires 1 inch (25 mm) pipe.
(4) Using the column marked 60 feet (18 288 mm) in Table 1216.2(1) [no column for actual length of 55 feet (16 764 mm)]:Outlet B supplying 3 cubic feet per hour (0.08 m3/h), requires 1⁄2 of an inch (15 mm) pipe.Outlet C, supplying 59 cubic feet per hour (1.67 m3/h), requires 1⁄2 of an inch (15 mm) pipe.
(5) Using the column marked 60 feet (18 288 mm) in Table 1216.2(1):Outlet D, supplying 136 cubic feet per hour (3.85 m3/h), requires 3⁄4 of an inch (20 mm) pipe.
For SI units: 1 foot = 304.8 mm, 1 gallon = 3.785 L, 1000 British thermal units per hour = 0.293 kW, 1 cubic foot per hour = 0.0283 m3/h
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TABLE 1216.2(1)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(b)]1, 2
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 0.60
PIPE SIZE (inch)NOMINAL: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4 5 6 8 10 12
ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026 5.047 6.065 7.981 10.020 11.938LENGTH(feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
1020304050
172118958172
360247199170151
678466374320284
1390957768657583
209014301150985873
40202760222019001680
64004400353030202680
11 3007780625053504740
23 10015 90012 70010 9009660
41 80028 70023 00019 70017 500
67 60046 50037 30031 90028 300
139 00095 50076 70065 60058 200
252 000173 000139 000119 000106 000
399 000275 000220 000189 000167 000
60708090100
6560565250
137126117110104
257237220207195
528486452424400
791728677635600
15201400130012201160
24302230208019501840
42903950367034503260
87608050749070306640
15 80014 60013 60012 70012 000
25 60023 60022 00020 60019 500
52 70048 50045 10042 30040 000
95 70088 10081 90076 90072 600
152 000139 000130 000122 000115 000
125150175200250
4440373430
9283777163
173157144134119
355322296275244
532482443412366
1020928854794704
16301480136012701120
28902610241022401980
58905330491045604050
10 6009650888082607320
17 20015 60014 40013 40011 900
35 40032 10029 50027 50024 300
64 30058 30053 60049 90044 200
102 00092 30084 90079 00070 000
300350400450500
2725232221
5753494643
10899928682
221203189177168
331305283266251
638587546512484
1020935870816771
18001650154014401360
36703370314029402780
66306100568053305030
10 7009880919086208150
22 10020 30018 90017 70016 700
40 10036 90034 30032 20030 400
63 40058 40054 30050 90048 100
550600650700750
2019181717
4139383635
7874716866
159152145140135
239228218209202
459438420403389
732699669643619
12901240118011401090
26402520241023202230
47804560436041904040
77407380707067906540
15 90015 20014 50014 00013 400
28 90027 50026 40025 30024 400
45 70043 60041 80040 10038 600
8008509009501000
1616151514
3433323130
6361595856
130126122118115
195189183178173
375363352342333
598579561545530
10601020992963937
21602090202019601910
39003780366035503460
63206110593057605600
13 00012 60012 20011 80011 500
23 60022 80022 10021 50020 900
37 30036 10035 00034 00033 100
11001200130014001500
1413121211
2827262524
5351494745
1091041009693
164156150144139
316301289277267
503480460442426
890849813781752
18101730166015901530
32803130300028802780
53205070486046704500
10 90010 400998095909240
19 80018 90018 10017 40016 800
31 40030 00028 70027 60026 600
16001700180019002000
11111010NA
2322222120
4442414039
8986848179
134130126122119
258250242235229
411398386375364
727703682662644
14801430139013501310
26802590252024402380
43404200407039603850
89208630837081307910
16 20015 70015 20014 80014 400
25 60024 80024 10023 40022 700
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPaNotes:1 Table entries are rounded to 3 significant digits.2 NA means a flow of less than 10 ft3/h (0.283 m3/h).
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220 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(2)SCHEDULE 40 METALLIC PIPE [NFPA 54-12: TABLE 6.2(c)]*
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa* Table entries are rounded to 3 significant digits.
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 3.0 in. w.c.SPECIFIC GRAVITY: 0.60
INTENDED USE: INITIAL SUPPLY PRESSURE OF 8.0 IN. W.C. OR GREATERPIPE SIZE (inch)
NOMINAL: 1⁄2 3⁄4 1 1¼ 11⁄2 2 21⁄2 3 4ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 454 949 1787 3669 5497 10 588 16 875 29 832 43 67820 312 652 1228 2522 3778 7277 11 598 20 503 30 02030 250 524 986 2025 3034 5844 9314 16 465 24 10740 214 448 844 1733 2597 5001 7971 14 092 20 63250 190 397 748 1536 2302 4433 7065 12 489 18 28660 172 360 678 1392 2085 4016 6401 11 316 16 56970 158 331 624 1280 1919 3695 5889 10 411 15 24380 147 308 580 1191 1785 3437 5479 9685 14 18190 138 289 544 1118 1675 3225 5140 9087 13 305100 131 273 514 1056 1582 3046 4856 8584 12 568125 116 242 456 936 1402 2700 4303 7608 11 139150 105 219 413 848 1270 2446 3899 6893 10 093175 96 202 380 780 1169 2251 3587 6342 9285200 90 188 353 726 1087 2094 3337 5900 8638250 80 166 313 643 964 1856 2958 5229 7656300 72 151 284 583 873 1681 2680 4738 6937350 66 139 261 536 803 1547 2465 4359 6382400 62 129 243 499 747 1439 2294 4055 5937450 58 121 228 468 701 1350 2152 3804 5570500 55 114 215 442 662 1275 2033 3594 5262550 52 109 204 420 629 1211 1931 3413 4997600 50 104 195 400 600 1156 1842 3256 4767650 47 99 187 384 575 1107 1764 3118 4565700 46 95 179 368 552 1063 1695 2996 4386750 44 92 173 355 532 1024 1632 2886 4225800 42 89 167 343 514 989 1576 2787 4080850 41 86 162 332 497 957 1526 2697 3949900 40 83 157 322 482 928 1479 2615 3828950 39 81 152 312 468 901 1436 2539 37181000 38 79 148 304 455 877 1397 2470 36161100 36 75 141 289 432 833 1327 2346 34351200 34 71 134 275 412 794 1266 2238 32771300 33 68 128 264 395 761 1212 2143 31381400 31 65 123 253 379 731 1165 2059 30141500 30 63 119 244 366 704 1122 1983 29041600 29 61 115 236 353 680 1083 1915 28041700 28 59 111 228 342 658 1048 1854 27141800 27 57 108 221 331 638 1017 1797 26311900 27 56 105 215 322 619 987 1745 25552000 26 54 102 209 313 602 960 1698 2485
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2212013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(3)SCHEDULE 40 METALLIC PIPE [NFPA 54-12: TABLE 6.2(d)]*
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 6.0 in. w.c.SPECIFIC GRAVITY: 0.60
INTENDED USE: INITIAL SUPPLY PRESSURE OF 11.0 IN. W.C. OR GREATERPIPE SIZE (inch)
NOMINAL: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 660 1380 2600 5338 7999 15 405 24 553 43 405 63 55120 454 949 1787 3669 5497 10 588 16 875 29 832 43 67830 364 762 1435 2946 4415 8502 13 551 23 956 35 07540 312 652 1228 2522 3778 7277 11 598 20 503 30 02050 276 578 1089 2235 3349 6449 10 279 18 172 26 60660 250 524 986 2025 3034 5844 9314 16 465 24 10770 230 482 907 1863 2791 5376 8568 15 147 22 17880 214 448 844 1733 2597 5001 7971 14 092 20 63290 201 420 792 1626 2437 4693 7479 13 222 19 359100 190 397 748 1536 2302 4433 7065 12 489 18 286125 168 352 663 1361 2040 3928 6261 11 069 16 207150 153 319 601 1234 1848 3559 5673 10 029 14 684175 140 293 553 1135 1700 3275 5219 9227 13 509200 131 273 514 1056 1582 3046 4856 8584 12 568250 116 242 456 936 1402 2700 4303 7608 11 139300 105 219 413 848 1270 2446 3899 6893 10 093350 96 202 380 780 1169 2251 3587 6342 9285400 90 188 353 726 1087 2094 3337 5900 8638450 84 176 332 681 1020 1965 3131 5535 8105500 80 166 313 643 964 1856 2958 5229 7656550 76 158 297 611 915 1762 2809 4966 7271600 72 151 284 583 873 1681 2680 4738 6937650 69 144 272 558 836 1610 2566 4537 6643700 66 139 261 536 803 1547 2465 4359 6382750 64 134 252 516 774 1490 2375 4199 6148800 62 129 243 499 747 1439 2294 4055 5937850 60 125 235 483 723 1393 2220 3924 5745900 58 121 228 468 701 1350 2152 3804 5570950 56 118 221 454 681 1311 2090 3695 54101000 55 114 215 442 662 1275 2033 3594 52621100 52 109 204 420 629 1211 1931 3413 49971200 50 104 195 400 600 1156 1842 3256 47671300 47 99 187 384 575 1107 1764 3118 45651400 46 95 179 368 552 1063 1695 2996 43861500 44 92 173 355 532 1024 1632 2886 42251600 42 89 167 343 514 989 1576 2787 40801700 41 86 162 332 497 957 1526 2697 39491800 40 83 157 322 482 928 1479 2615 38281900 39 81 152 312 468 901 1436 2539 37182000 38 79 148 304 455 877 1397 2470 3616
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa* Table entries are rounded to 3 significant digits.
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222 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(4)SCHEDULE 40 METALLIC PIPE [NFPA 54-12: TABLE 6.2(e)]*
GAS: NATURALINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 0.60
PIPE SIZE (inch)NOMINAL: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
1020304050
15101070869753673
30402150176015201360
55603930321027802490
11 4008070659057105110
17 10012 100988085507650
32 90023 30019 00016 50014 700
52 50037 10030 30026 30023 500
92 80065 60053 60046 40041 500
189 000134 000109 00094 70084 700
60708090100
615569532502462
1240115010801010934
22702100197018501710
46604320404038103510
69806470605057005260
13 50012 50011 70011 00010 100
21 40019 90018 60017 50016 100
37 90035 10032 80030 90028 500
77 30071 60067 00063 10058 200
125150175200250
414372344318279
836751695642583
15301370127011701040
31402820260124102140
47004220391036103210
90608130753069606180
14 40013 00012 00011 1009850
25 50022 90021 20019 60017 400
52 10046 70043 30040 00035 500
300350400450500
253232216203192
528486452424401
945869809759717
19401790166015601470
29102670249023302210
56005150479045004250
89208210764071706770
15 80014 50013 50012 70012 000
32 20029 60027 50025 80024 400
550600650700750
182174166160154
381363348334322
681650622598576
14001330128012301180
20902000191018401770
40303850368035403410
64306130587056405440
11 40010 80010 40099709610
23 20022 10021 20020 30019 600
8008509009501000
149144139135132
311301292283275
556538522507493
11401100107010401010
17101650160015601520
32903190309030002920
52505080493047804650
92808980871084608220
18 90018 30017 80017 20016 800
11001200130014001500
125119114110106
262250239230221
468446427411396
960917878843812
14401370132012601220
27702640253024302340
44204220404038803740
78107450714068606600
15 90015 20014 60014 00013 500
16001700180019002000
10299969391
214207200195189
382370358348339
784759736715695
11801140110010701040
22602190212020602010
36103490339032903200
63806170598058105650
13 00012 60012 20011 90011 500
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.
READ ONLY
2232013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(5)SCHEDULE 40 METALLIC PIPE [NFPA 54-12: TABLE 6.2(f)]*
GAS: NATURALINLET PRESSURE: 3.0 psiPRESSURE DROP: 2.0 psiSPECIFIC GRAVITY: 0.60
PIPE SIZE (inch)NOMINAL: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
1020304050
2350162013001110985
49203380272023202060
92706370511043803880
19 00013 10010 50089907970
28 50019 60015 70013 50011 900
54 90037 70030 30025 90023 000
87 50060 10048 30041 30036 600
155 000106 00085 40073 10064 800
316 000217 000174 000149 000132 000
60708090100
892821764717677
18701720160015001420
35203230301028202670
72206640618058005470
10 8009950926086808200
20 80019 20017 80016 70015 800
33 20030 50028 40026 70025 200
58 70054 00050 20047 10044 500
120 000110 000102 00096 10090 800
125150175200250
600544500465412
125011401050973862
23602140197018301620
48504400404037603330
72706590606056405000
14 00012 70011 70010 9009620
22 30020 20018 60017 30015 300
39 50035 70032 90030 60027 100
80 50072 90067 10062 40055 300
300350400450500
374344320300283
781719669627593
14701350126011801120
30202780259024302290
45304170387036403430
87208020746070006610
13 90012 80011 90011 20010 500
24 60022 60021 00019 70018 600
50 10046 10042 90040 20038 000
550600650700750
269257246236228
563537514494476
10601010969931897
21802080199019101840
32603110298028602760
62805990574055105310
10 0009550915087908470
17 70016 90016 20015 50015 000
36 10034 40033 00031 70030 500
8008509009501000
220213206200195
460445431419407
866838812789767
17801720167016201580
26602580250024302360
51304960481046704550
81807910767074507240
14 50014 00013 60013 20012 800
29 50028 50027 70026 90026 100
11001200130014001500
185177169162156
387369353340327
729695666640616
15001430137013101270
22402140205019701900
43204120394037903650
68906570629060405820
12 20011 60011 10010 70010 300
24 80023 70022 70021 80021 000
16001700180019002000
151146142138134
316306296288280
595576558542527
12201180115011101080
18301770172016701620
35303410331032103120
56205440527051204980
10 0009610932090508800
20 30019 60019 00018 40018 000
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.
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224 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(6)SCHEDULE 40 METALLIC PIPE [NFPA 54-12: TABLE 6.2(g)]*
GAS: NATURALINLET PRESSURE: 5.0 psiPRESSURE DROP: 3.5 psiSPECIFIC GRAVITY: 0.60
PIPE SIZE (inch)NOMINAL: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
1020304050
31902250184015901430
64304550372032202880
11 8008320679058805260
24 20017 10014 00012 10010 800
36 20025 60020 90018 10016 200
69 70049 30040 30034 90031 200
111 00078 60064 20055 60049 700
196 000139 000113 00098 20087 900
401 000283 000231 000200 000179 000
60708090100
1300120011501060979
26302430233021501980
48004450426039203620
98609130854080507430
14 80013 70012 80012 10011 100
28 50026 40024 70023 20021 400
45 40042 00039 30037 00034 200
80 20074 30069 50065 50060 400
164 000151 000142 000134 000123 000
125150175200250
876786728673558
17701590147013601170
32402910269024902200
66405960552051004510
99508940827076506760
19 20017 20015 90014 70013 000
30 60027 40025 40023 50020 800
54 00048 50044 90041 50036 700
110 00098 90091 60084 70074 900
300350400450500
506465433406384
1060973905849802
19901830171016001510
40903760350032903100
61305640525049204650
11 80010 90010 10094808950
18 80017 30016 10015 10014 300
33 30030 60028 50026 70025 200
67 80062 40058 10054 50051 500
550600650700750
364348333320308
762727696669644
14401370131012601210
29502810269025902490
44204210403038803730
85008110777074607190
13 60012 90012 40011 90011 500
24 00022 90021 90021 00020 300
48 90046 60044 60042 90041 300
8008509009501000
298288279271264
622602584567551
11701130110010701040
24102330226021902130
36103490338032903200
69406720652063306150
11 10010 70010 40010 1009810
19 60018 90018 40017 80017 300
39 90038 60037 40036 40035 400
11001200130014001500
250239229220212
524500478460443
987941901866834
20301930185017801710
30302900277026602570
58405580534051304940
93208890851081807880
16 50015 70015 00014 50013 900
33 60032 00030 70029 50028 400
16001700180019002000
205198192186181
428414401390379
806780756734714
16501600155015101470
24802400233022602200
47704620448043504230
76107360714069306740
13 40013 00012 60012 30011 900
27 40026 50025 70025 00024 300
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.
READ ONLY
2252013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(7)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(h)]1, 2
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 0.3 in. w.c.SPECIFIC GRAVITY: 0.60
TUBE SIZE (inch)
NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:3 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR1020304050
20141110NA
4229232017
8558474035
148102827062
2101441169988
448308247211187
806554445381337
1270873701600532
26501820146012501110
60708090100
NANANANANA
1614131312
3229272624
5652484543
7973686460
170156145136129
306281262245232
482443413387366
1000924859806761
125150175200250
NANANANANA
1110NANANA
2220181715
3834312926
5348454137
114103958978
206186171159141
324294270251223
675612563523464
300350400450500
NANANANANA
NANANANANA
1312111110
2322201918
3331282725
7165615754
12811811010397
202186173162153
420387360338319
550600650700750
NANANANANA
NANANANANA
NANANANANA
1716151514
2423222120
5149474543
9288848178
145139133128123
303289277266256
8008509009501000
NANANANANA
NANANANANA
NANANANANA
1413131312
2019181817
4240393837
7573716967
119115111108105
247239232225219
11001200130014001500
NANANANANA
NANANANANA
NANANANANA
12111110NA
1616151414
3534323130
6360585654
10095918884
208199190183176
16001700180019002000
NANANANANA
NANANANANA
NANANANANA
NANANANANA
1313131212
2928272625
5250494746
8279777472
170164159155151
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPaNotes: 1 Table entries are rounded to 3 significant digits.2 NA means a flow of less than 10 ft3/h (0.283 m3/h).3 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
READ ONLY
226 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(8)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(i)]1, 2
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 0.60
TUBE SIZE (inch)
NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:3 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR1020304050
2718151311
5538302623
11177615347
1951341079282
276190152131116
590406326279247
1060730586502445
16801150925791701
34902400193016501460
60708090100
10NANANANA
2119181716
4239363432
7468635956
10596908479
224206192180170
403371345324306
635585544510482
13201220113010601000
125150175200250
NANANANANA
14131211NA
2826242220
5045413934
7064595548
151136125117103
271245226210186
427387356331294
890806742690612
300350400450500
NANANANANA
NANANANANA
1816151413
3128262523
4440383533
9486807571
169155144135128
266245228214202
554510474445420
550600650700750
NANANANANA
NANANANANA
1312121111
2221202019
3230292827
6864625957
122116111107103
192183175168162
399381365350338
8008509009501000
NANANANANA
NANANANANA
1010NANANA
1818171716
2625242423
5553525049
9996939088
156151147143139
326315306297289
11001200130014001500
NANANANANA
NANANANANA
NANANANANA
1515141313
2221201918
4644424139
8480767371
132126120116111
274262251241232
16001700180019002000
NANANANANA
NANANANANA
NANANANANA
1312121111
1817171616
3837363534
6866646260
1081041019895
224217210204199
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPaNotes:1 Table entries are rounded to 3 significant digits.2 NA means a flow of less than 10 ft3/h (0.283 m3/h).3 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
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2272013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(9)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(j)]1, 2
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 1.0 in. w.c.SPECIFIC GRAVITY: 0.60
INTENDED USE: TUBE SIZING BETWEEN HOUSE LINE REGULATOR AND THE APPLIANCETUBE SIZE (inch)
NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:3 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR1020304050
3927211816
8055443833
162111897768
283195156134119
402276222190168
859590474406359
15501060853730647
24401680135011501020
50803490280024002130
60708090100
1513131211
3028262423
6157534947
10799928682
152140131122116
326300279262247
586539502471445
925851791742701
19301770165015501460
125150175200250
NANANANANA
2018171614
4137343228
7265605650
10393857970
219198183170151
394357329306271
622563518482427
1290117010801000890
300350400450500
NANANANANA
13121110NA
2624222120
4541393634
6459555148
136125117110103
245226210197186
387356331311294
806742690647612
550600650700750
NANANANANA
NANANANANA
1918171616
3231302827
4644424039
9894908683
177169162155150
279266255245236
581554531510491
8008509009501000
NANANANANA
NANANANANA
1515141413
2626252423
3836353433
8078757371
144140135132128
228220214207202
474459445432420
11001200130014001500
NANANANANA
NANANANANA
1312121111
2221202019
3230292827
6864625957
122116111107103
192183175168162
399381365350338
16001700180019002000
NANANANANA
NANANANANA
1010NANANA
1818171716
2625242423
5553525049
9996939088
156151147143139
326315306297289
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPaNotes: 1 Table entries are rounded to 3 significant digits.2 NA means a flow of less than 10 ft3/h (0.283 m3/h).3 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
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228 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(10)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(k)]2
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 17.0 in. w.c.SPECIFIC GRAVITY: 0.60
TUBE SIZE (inch)
NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR1020304050
1901301059079
391269216185164
796547439376333
1390956768657582
197013601090932826
42202900233019901770
75905220419035903180
12 0008230661056505010
24 90017 10013 80011 80010 400
60708090100
7266625855
148137127119113
302278258243229
528486452424400
749689641601568
16001470137012801210
28802650246023102180
45404180389036503440
94608700809075907170
125150175200250
4844403833
10090837769
203184169157140
355321296275244
503456420390346
1080974896834739
19401750161015001330
30502770254023702100
63605760530049304370
300350400450500
3028262423
6257535047
12611610810296
221203189177168
313288268252238
670616573538508
121011101030968914
19001750163015301440
39603640339031803000
550600650700750
2221201918
4543413938
9187838077
159152145140135
226215206198191
482460441423408
868829793762734
13701310125012001160
28502720261025002410
8008509009501000
1817171616
3735343332
7472706866
130126122118115
184178173168163
394381370359349
709686665646628
1120108010501020991
23302250218021202060
11001200130014001500
1514141313
3129282726
6360575553
1091041009693
155148142136131
332316303291280
597569545524505
941898860826796
19601870179017201660
16001700180019002000
1212111111
2524242322
5149484745
8986848179
127123119115112
271262254247240
487472457444432
768744721700681
16001550150014601420
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPaNotes:1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.2 Table entries are rounded to 3 significant digits.
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2292013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(11)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(l)]2
GAS: NATURALINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 0.60
TUBE SIZE (inch)
NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR1020304050
245169135116103
506348279239212
1030708568486431
18001240993850754
25501760141012101070
54503750301025802280
98206750542046404110
15 50010 600855073106480
32 20022 20017 80015 20013 500
60708090100
9386807571
192177164154146
391359334314296
683628584548518
969891829778735
20701900177016601570
37303430319029902830
58705400503047204450
12 20011 30010 50098209280
125150175200250
6357524943
12911710810089
263238219204181
459416383356315
651590543505448
1390126011601080956
25002270209019401720
39503580329030602710
82207450685063805650
300350400450500
3936333130
8074696561
164150140131124
286263245230217
406373347326308
866797741696657
15601430133012501180
24602260210019701870
51204710438041103880
550600650700750
2827262524
5855535149
118112108103100
206196188181174
292279267256247
624595570548528
112010701030986950
17701690162015501500
36903520337032403120
8008509009501000
2322222120
4746444342
9693908885
168163158153149
239231224217211
510493478464452
917888861836813
14501400136013201280
30102920283027402670
11001200130014001500
1918181716
4038363534
8177747168
142135129124120
201192183176170
429409392376363
772737705678653
12201160111010701030
25402420232022302140
16001700180019002000
1615151414
3331303029
6664626059
116112108105102
164159154149145
350339329319310
630610592575559
994962933906881
20702000194018901830
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPaNotes: 1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.2 Table entries are rounded to 3 significant digits.
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230 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(12)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(m)]3
GAS: NATURALINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.5 psiSPECIFIC GRAVITY: 0.60
INTENDED USE: PIPE SIZING BETWEEN POINT OF DELIVERY AND THE HOUSE LINE REGULATOR. TOTAL LOAD SUPPLIED BY ASINGLE HOUSE LINE REGULATOR NOT EXCEEDING 150 CUBIC FEET PER HOUR.2
TUBE SIZE (inch)
NOMINAL: K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR1020304050
303208167143127
625430345295262
1270874702601532
2220153012301050931
31502170174014901320
67404630372031802820
12 1008330669057305080
19 10013 10010 60090308000
39 80027 40022 00018 80016 700
60708090100
115106989287
237218203190180
482444413387366
843776722677640
120011001020961907
25602350219020501940
46004230394036903490
72506670621058205500
15 10013 90012 90012 10011 500
125150175200250
7770646053
159144133124110
324294270252223
567514472440390
804729670624553
17201560143013301180
30902800258024002130
48804420406037803350
10 2009200846078706980
300350400450500
4844413936
9991858075
202186173162153
353325302283268
501461429402380
1070984916859811
19301770165015501460
30402790260024402300
63205820541050804800
550600650700750
3533323029
7268656360
146139133128123
254243232223215
361344330317305
771735704676652
13901320127012201170
21902090200019201850
45604350416040003850
8008509009501000
2827272625
5857555352
119115111108105
208201195189184
295285276268261
629609590573558
11301100106010301000
17901730168016301580
37203600349033903300
11001200130014001500
2423222120
4947454342
10095918885
175167160153148
248237227218210
530505484465448
954910871837806
15001430137013201270
31302990286027502650
16001700180019002000
1919181817
4039383736
8279777472
143138134130126
202196190184179
432419406394383
779753731709690
12301190115011201090
25602470240023302270
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPaNotes:1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.2 Where this table is used to size the tubing upstream of a line pressure regulator, the pipe or tubing downstream of the line pressure regulator shall be sized
using a pressure drop no greater than 1 inch water column (0.249 kPa).3 Table entries are rounded to 3 significant digits.
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2312013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(13)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(n)]2
GAS: NATURALINLET PRESSURE: 5.0 psiPRESSURE DROP: 3.5 psiSPECIFIC GRAVITY: 0.60
TUBE SIZE (inch)
NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR1020304050
511351282241214
1050724582498441
2140147011801010898
37502580207017701570
53203650293025102230
11 4007800627053604750
20 40014 00011 30096608560
32 20022 20017 80015 20013 500
67 10046 10037 00031 70028 100
60708090100
194178166156147
400368342321303
813748696653617
14201310122011401080
20201860173016201530
43103960369034603270
77507130664062305880
12 20011 20010 50098209270
25 50023 40021 80020 40019 300
125150175200250
13011810910190
269243224208185
547495456424376
955866796741657
1360123011301050932
29002620241022501990
52104720435040403580
82207450685063705650
17 10015 50014 30013 30011 800
300350400450500
8175696562
167154143134127
340313291273258
595547509478451
844777722678640
18001660154014501370
32502990278026102460
51204710438041103880
10 7009810912085608090
550600650700750
5856535149
121115110106102
245234224215207
429409392376362
608580556534514
13001240119011401100
23402230214020501980
36903520337032403120
76807330702067406490
8008509009501000
4846454342
9895929087
200194188182177
350339328319310
497481466452440
106010301000967940
19101850179017401690
30102910282027402670
62706070588057105560
11001200130014001500
4038373534
8379767370
169161154148143
295281269259249
418399382367353
893852816784755
16101530147014101360
25302420232022202140
52805040482046304460
16001700180019002000
3332313029
6865636260
138133129125122
241233226219213
341330320311302
729705684664646
13101270123012001160
20702000194018901830
43104170404039303820
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPaNotes: 1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.2 Table entries are rounded to 3 significant digits.
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232 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(14)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(o)]1, 2
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPaNotes:1 Table entries are rounded to 3 significant digits.2 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an
equivalent length of tubing to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings, bends, or both.3 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD,
the greater the gas capacity of the tubing.
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 0.60
TUBE SIZE (EHD)3
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
510152025
4632252219
6344353127
11582665852
13495776760
225161132116104
270192157137122
471330267231206
546383310269240
895639524456409
1037746615536482
179012601030888793
2070147012001050936
36602600214018501660
41402930240020801860
30405060
18151312
25211917
47413734
55474238
96837568
112978780
188162144131
218188168153
374325292267
442386347318
723625559509
856742665608
1520132011801080
1700147013201200
708090100
1110109
16151413
31292826
36333230
63605754
74696562
121113107101
141132125118
248232219208
295277262249
471440415393
563527498472
1000940887843
11101040983933
150200250300
7655
10987
20181615
23211917
42383432
48443936
78716357
91827467
17114813395
205179161148
320277247226
387336301275
691600538492
762661591540
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2332013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(15)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(p)]1, 2
For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPaNotes:1 Table entries are rounded to 3 significant digits.2 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an
equivalent length of tubing to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings, bends, or both.3 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD,
the greater the gas capacity of the tubing.
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 3.0 in. w.c.SPECIFIC GRAVITY: 0.60
INTENDED USE: INITIAL SUPPLY PRESSURE OF 8.0 INCH WATER COLUMN OR GREATERTUBE SIZE (EHD)3
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 46 48 60 62LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
510152025
12083675751
160112907869
277197161140125
327231189164147
529380313273245
649462379329295
1180828673580518
1370958778672599
2140153012501090978
44303200254022001960
50103560291025302270
88006270514044604000
10 1007160585050704540
30405060
46393532
63544844
1151008982
13411610495
225196176161
270234210192
471407363330
546471421383
895778698639
1790155013801260
2070180016101470
3660318028502600
4140359032102930
708090100
29272624
41383634
76716763
88827773
150141133126
178167157149
306285268254
355331311295
593555524498
117010901030974
1360128012001140
2420226021402030
2720254024002280
150200250300
19171513
27232119
52454037
60524642
104918275
1221069587
206178159144
240207184168
409355319234
793686613559
936812728665
1660144012901180
1860161014401320
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234 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(16)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(q)]1, 2
For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPaNotes:1 Table entries are rounded to 3 significant digits.2 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equiv-
alent length of tubing to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings, bends, or both.3 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the
greater the gas capacity of the tubing.
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 6.0 in. w.c.SPECIFIC GRAVITY: 0.60
INTENDED USE: INITIAL SUPPLY PRESSURE OF 11.0 INCH WATER COLUMN OR GREATERTUBE SIZE (EHD)3
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 46 48 60 62LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
510152025
173120968374
22916013011299
389277227197176
461327267231207
737529436380342
911649532462414
16901180960828739
195013701110958855
30002140176015301370
62804430361031202790
70505010410035603190
12 4008800721062705620
14 26010 100826071606400
30405060
67575146
90786963
161140125115
189164147134
313273245225
379329295270
673580518471
778672599546
12501090978895
2540220019601790
2910253022702070
5140446040003660
5850507045404140
708090100
42393735
58545148
1061009489
124116109104
209196185176
250234221210
435407383363
505471444421
830778735698
1660155014601380
1920180017001610
3390318030002850
3840359033903210
150200250300
28242119
39343027
73635752
85736660
145126114104
172149134122
294254226206
342295263240
573498447409
1130974870793
132011401020936
2340203018201660
2630228020401860
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2352013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(17)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(r)]1, 2, 3, 4
For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPaNotes:1 Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 0.75 psi (5.17 kPa), DO NOT USE THIS TABLE. Con-
sult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator are capable of varying with flow rate.2 CAUTION: Capacities shown in table are capable of exceeding maximum capacity for a selected regulator. Consult with regulator or tubing manufacturer
for guidance.3 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased
by an equivalent length of tubing according to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additionalfittings, bends, or both.
4 Table entries are rounded to 3 significant digits.5 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD,
the greater the gas capacity of the tubing.
GAS: NATURALINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 0.60
TUBE SIZE (EHD)5FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62
LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR1025304050
270166151129115
353220200172154
587374342297266
700444405351314
1100709650567510
1370876801696624
25901620148012701140
29901870170014701310
45102890264023002060
50373258298726052343
96006040551047604260
10 7006780620053804820
18 60011 90010 90094408470
21 60013 70012 50010 9009720
7580100150200
9389796455
1241201078775
218211189155135
257249222182157
420407366302263
512496445364317
922892795646557
10701030920748645
16901640147012101050
19321874168513891212
34703360300024402110
39503820342028002430
69406730603049404290
79407690688056204870
250300400500
49443834
67615246
1211109686
141129111100
236217189170
284260225202
497453390348
576525453404
941862749552
1090999871783
1890172014901330
2180199017301550
3850352030602740
4360398034503090
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236 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(18)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(s)]1, 2, 3, 4
GAS: NATURALINLET PRESSURE: 5.0 psiPRESSURE DROP: 3.5 psiSPECIFIC GRAVITY: 0.60
TUBE SIZE (EHD)5
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
1025304050
523322292251223
674420382329293
1080691632549492
1300827755654586
2000129011801030926
25301620148012801150
49203080280024202160
56603540323027902490
83005310486042303790
91405911542047274251
18 10011 40010 40089708020
19 80012 60011 50010 0008930
34 40022 00020 10017 40015 600
40 40025 60023 40020 20018 100
7580100150200
180174154124107
238230205166143
403391350287249
479463415339294
763740665548478
944915820672584
17501690151012301060
20201960174014201220
31103020271022201930
35063400305725212199
65306320565046003980
73207090635052004510
12 80012 40011 10091307930
14 80014 30012 80010 5009090
250300400500
95867466
12811610089
223204177159
263240208186
430394343309
524479416373
945860742662
1090995858766
1730159013801040
1977181315811422
3550324028002500
4040369032102870
7110650056505060
8140743064405760
For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPaNotes:1 Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 1 psi ( 7 kPa), DO NOT USE THIS TABLE. Consult with regu-
lator manufacturer for pressure drops and capacity factors. Pressure drops across regulator are capable of varying with the flow rate.2 CAUTION: Capacities shown in table are capable of exceeding the maximum capacity of selected regulator. Consult tubing manufacturer for guidance.3 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equiva-
lent length of tubing to the following equation: L = 1.3 n, where L is additional length (feet) of tubing and n is the number of additional fittings, bends, or both.4 Table entries are rounded to 3 significant digits.5 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater
the gas capacity of the tubing.
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2372013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(19)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.2(t)]*
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa* Table entries are rounded to 3 significant digits.
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 0.3 in. w.c.SPECIFIC GRAVITY: 0.60
PIPE SIZE (inch)NOMINAL OD: 1⁄2 3⁄4 1 1 1⁄4 1 1⁄2 2 3 4DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 153 305 551 955 1440 2590 7170 13 90020 105 210 379 656 991 1780 4920 952030 84 169 304 527 796 1430 3950 764040 72 144 260 451 681 1220 3380 654050 64 128 231 400 604 1080 3000 580060 58 116 209 362 547 983 2720 525070 53 107 192 333 503 904 2500 483080 50 99 179 310 468 841 2330 450090 46 93 168 291 439 789 2180 4220100 44 88 159 275 415 745 2060 3990125 39 78 141 243 368 661 1830 3530150 35 71 127 221 333 598 1660 3200175 32 65 117 203 306 551 1520 2940200 30 60 109 189 285 512 1420 2740250 27 54 97 167 253 454 1260 2430300 24 48 88 152 229 411 1140 2200350 22 45 81 139 211 378 1050 2020400 21 42 75 130 196 352 974 1880450 19 39 70 122 184 330 914 1770500 18 37 66 115 174 312 863 1670
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238 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(20)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.2(u)]*
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa* Table entries are rounded to 3 significant digits.
GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 0.60
PIPE SIZE (inch)NOMINAL OD: 1⁄2 3⁄4 1 1 1⁄4 1 1⁄2 2 3 4DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 201 403 726 1260 1900 3410 9450 18 26020 138 277 499 865 1310 2350 6490 12 55030 111 222 401 695 1050 1880 5210 10 08040 95 190 343 594 898 1610 4460 863050 84 169 304 527 796 1430 3950 764060 76 153 276 477 721 1300 3580 693070 70 140 254 439 663 1190 3300 637080 65 131 236 409 617 1110 3070 593090 61 123 221 383 579 1040 2880 5560100 58 116 209 362 547 983 2720 5250125 51 103 185 321 485 871 2410 4660150 46 93 168 291 439 789 2180 4220175 43 86 154 268 404 726 2010 3880200 40 80 144 249 376 675 1870 3610250 35 71 127 221 333 598 1660 3200300 32 64 115 200 302 542 1500 2900350 29 59 106 184 278 499 1380 2670400 27 55 99 171 258 464 1280 2480450 26 51 93 160 242 435 1200 2330500 24 48 88 152 229 411 1140 2200
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2392013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(21)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.2(v)]*
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m3/h, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.
GAS: NATURALINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 0.60
PIPE SIZE (inch)NOMINAL OD: 1⁄2 3⁄4 1 1 1⁄4 1 1⁄2 2 3 4DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
10 1860 3720 6710 11 600 17 600 31 600 87 300 169 00020 1280 2560 4610 7990 12 100 21 700 60 000 116 00030 1030 2050 3710 6420 9690 17 400 48 200 93 20040 878 1760 3170 5490 8300 14 900 41 200 79 70050 778 1560 2810 4870 7350 13 200 36 600 70 70060 705 1410 2550 4410 6660 12 000 33 100 64 00070 649 1300 2340 4060 6130 11 000 30 500 58 90080 603 1210 2180 3780 5700 10 200 28 300 54 80090 566 1130 2050 3540 5350 9610 26 600 51 400100 535 1070 1930 3350 5050 9080 25 100 48 600125 474 949 1710 2970 4480 8050 22 300 43 000150 429 860 1550 2690 4060 7290 20 200 39 000175 395 791 1430 2470 3730 6710 18 600 35 900200 368 736 1330 2300 3470 6240 17 300 33 400250 326 652 1180 2040 3080 5530 15 300 29 600300 295 591 1070 1850 2790 5010 13 900 26 800350 272 544 981 1700 2570 4610 12 800 24 700400 253 506 913 1580 2390 4290 11 900 22 900450 237 475 856 1480 2240 4020 11 100 21 500500 224 448 809 1400 2120 3800 10 500 20 300550 213 426 768 1330 2010 3610 9990 19 300600 203 406 733 1270 1920 3440 9530 18 400650 194 389 702 1220 1840 3300 9130 17 600700 187 374 674 1170 1760 3170 8770 16 900750 180 360 649 1130 1700 3050 8450 16 300800 174 348 627 1090 1640 2950 8160 15 800850 168 336 607 1050 1590 2850 7890 15 300900 163 326 588 1020 1540 2770 7650 14 800950 158 317 572 990 1500 2690 7430 14 4001000 154 308 556 963 1450 2610 7230 14 0001100 146 293 528 915 1380 2480 6870 13 3001200 139 279 504 873 1320 2370 6550 12 7001300 134 267 482 836 1260 2270 6270 12 1001400 128 257 463 803 1210 2180 6030 11 6001500 124 247 446 773 1170 2100 5810 11 2001600 119 239 431 747 1130 2030 5610 10 8001700 115 231 417 723 1090 1960 5430 10 5001800 112 224 404 701 1060 1900 5260 10 2001900 109 218 393 680 1030 1850 5110 99002000 106 212 382 662 1000 1800 4970 9600
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240 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(22)POLYETHYLENE PLASTIC TUBING [NFPA 54-12: TABLE 6.2(w)]2, 3
TABLE 1216.2(23)POLYETHYLENE PLASTIC TUBING [NFPA 54-12: TABLE 6.2(x)]2, 3
GAS: NATURALINLET PRESSURE: LESS THAN 2.0 psiPRESSURE DROP: 0.3 in. w.c.SPECIFIC GRAVITY: 0.60PLASTIC TUBING SIZE (CTS)1 (inch)
NOMINAL OD: 1⁄2 1DESIGNATION: SDR 7 SDR 11ACTUAL ID: 0.445 0.927LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
1020304050
5437302623
372256205176156
60708090100
2119181716
141130121113107
125150175200
14131211
95867974
225250275300
10NANANA
69656259
350400450500
NANANANA
54514745
GAS: NATURALINLET PRESSURE: LESS THAN 2.0 psiPRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 0.60PLASTIC TUBING SIZE (CTS)1 (inch)
NOMINAL OD: 1⁄2 1DESIGNATION: SDR 7 SDR 11ACTUAL ID: 0.445 0.927LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR
1020304050
7249393430
490337271232205
60708090100
2725232221
186171159149141
125150175200
18171514
12511310497
225250275300
13121111
91868278
350400450500
10NANANA
72676359
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour =0.0283m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column= 0.249 kPaNotes:1 CTS = Copper tube size.2 Table entries are rounded to 3 significant digits.3 NA means a flow of less than 10 ft3/h (0.283 m3/h).
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour =0.0283m3/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column= 0.249 kPaNotes:1 CTS = Copper tube size.2 Table entries are rounded to 3 significant digits.3 NA means a flow of less than 10 ft3/h (0.283 m3/h).READ O
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2412013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(24)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(a)]*
GAS: UNDILUTED PROPANEINLET PRESSURE: 10.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 1.50
INTENDED USE: PIPE SIZING BETWEEN FIRST STAGE (HIGH PRESSURE) REGULATOR AND SECOND STAGE (LOW PRESSURE) REGULATORPIPE SIZE (inch)
NOMINALINSIDE:
1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4
ACTUAL: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
1020304050
33202280183015701390
69504780384032802910
13 1009000722061805480
26 90018 50014 80012 70011 300
40 30027 70022 20019 00016 900
77 60053 30042 80036 60032 500
124 00085 00068 20058 40051 700
219 000150 000121 000103 00091 500
446 000306 000246 000211 000187 000
60708090100
1260116010801010956
26402430226021202000
49704570425039903770
10 2009380873081907730
15 30014 10013 10012 30011 600
29 40027 10025 20023 60022 300
46 90043 10040 10037 70035 600
82 90076 30070 90066 60062 900
169 000156 000145 000136 000128 000
125150175200250
848768706657582
17701610148013701220
33403020278025902290
68506210571053204710
10 3009300856079607060
19 80017 90016 50015 30013 600
31 50028 60026 30024 40021 700
55 70050 50046 50043 20038 300
114 000103 00094 70088 10078 100
300350400450500
528486452424400
11001020945886837
20801910178016701580
42703930365034303240
64005880547051404850
12 30011 30010 50098909340
19 60018 10016 80015 80014 900
34 70031 90029 70027 90026 300
70 80065 10060 60056 80053 700
550600650700750
380363347334321
795759726698672
15001430137013101270
30702930281027002600
46104400421040403900
88708460811077907500
14 10013 50012 90012 40012 000
25 00023 90022 80021 90021 100
51 00048 60046 60044 80043 100
8008509009501000
310300291283275
649628609592575
12201180115011101080
25102430236022902230
37603640353034303330
72407010680066006420
11 50011 20010 80010 50010 200
20 40019 80019 20018 60018 100
41 60040 30039 10037 90036 900
11001200130014001500
261249239229221
546521499480462
1030982940903870
21102020193018501790
31703020289027802680
61005820557053505160
97209270888085308220
17 20016 40015 70015 10014 500
35 00033 40032 00030 80029 600
16001700180019002000
213206200194189
446432419407395
840813789766745
17301670162015701530
25902500243023602290
49804820467045404410
79407680745072307030
14 00013 60013 20012 80012 400
28 60027 70026 90026 10025 400
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.
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242 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(25)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(b)]*
GAS: UNDILUTED PROPANEINLET PRESSURE: 10.0 psiPRESSURE DROP: 3.0 psiSPECIFIC GRAVITY: 1.50
INTENDED USE: PIPE SIZING BETWEEN FIRST STAGE (HIGH PRESSURE) REGULATOR AND SECOND STAGE (LOW PRESSURE) REGULATORPIPE SIZE (inch)
NOMINALINSIDE:
1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4
ACTUAL: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
1020304050
58904050325027802460
12 3008460679058105150
23 20015 90012 80011 0009710
47 60032 70026 30022 50019 900
71 30049 00039 40033 70029 900
137 00094 40075 80064 90057 500
219 000150 000121 000103 00091 600
387 000266 000214 000183 000162 000
789 000543 000436 000373 000330 000
60708090100
22302050191017901690
46704300400037503540
87908090753070606670
18 10016 60015 50014 50013 700
27 10024 90023 20021 70020 500
52 10047 90044 60041 80039 500
83 00076 40071 10066 70063 000
147 000135 000126 000118 000111 000
299 000275 000256 000240 000227 000
125150175200250
15001360125011601030
31402840262024302160
59105360493045804060
12 10011 00010 10094108340
18 20016 50015 20014 10012 500
35 00031 70029 20027 20024 100
55 80050 60046 50043 30038 400
98 70089 40082 30076 50067 800
201 000182 000167 800156 100138 400
300350400450500
935860800751709
19501800167015701480
36803390315029602790
75606950647060705730
11 30010 400969090908590
21 80020 10018 70017 50016 500
34 80032 00029 80027 90026 400
61 50056 50052 60049 40046 600
125 400115 300107 300100 70095 100
550600650700750
673642615591569
14101340129012401190
26502530242023302240
54505200498047804600
81607780745071606900
15 70015 00014 40013 80013 300
25 00023 90022 90022 00021 200
44 30042 20040 50038 90037 400
90 30086 20082 50079 30076 400
8008509009501000
550532516501487
11501110108010501020
21702100203019701920
44504300417040503940
66606450625060705900
12 80012 40012 00011 70011 400
20 50019 80019 20018 60018 100
36 20035 00033 90032 90032 000
73 70071 40069 20067 20065 400
11001200130014001500
463442423406391
968923884849818
18201740167016001540
37403570342032803160
56105350512049204740
10 80010 300987094809130
17 20016 40015 70015 10014 600
30 40029 00027 80026 70025 700
62 10059 20056 70054 50052 500
16001700180019002000
378366355344335
790765741720700
14901440140013601320
30602960287027802710
45804430430041704060
88208530827080407820
14 10013 60013 20012 80012 500
24 80024 00023 30022 60022 000
50 70049 00047 60046 20044 900
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.
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2432013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(26)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(c)]*
GAS: UNDILUTED PROPANEINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 1.50
INTENDED USE: PIPE SIZING BETWEEN 2 PSI SERVICE AND LINE PRESSURE REGULATORPIPE SIZE (inch)
NOMINAL: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4
ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
1020304050
26801840148012601120
55903850309026402340
10 5007240582049804410
21 60014 90011 90010 2009060
32 40022 30017 90015 30013 600
62 40042 90034 50029 50026 100
99 50068 40054 90047 00041 700
176 000121 00097 10083 10073 700
359 000247 000198 000170 000150 000
60708090100
1010934869815770
21201950182017001610
40003680342032103030
82107550702065906230
12 30011 30010 50098809330
23 70021 80020 30019 00018 000
37 70034 70032 30030 30028 600
66 70061 40057 10053 60050 600
136 000125 000116 000109 000103 000
125150175200250
682618569529469
1430129011901110981
26902440224020801850
55205000460042803790
82707490689064105680
15 90014 40013 30012 30010 900
25 40023 00021 20019 70017 400
44 90040 70037 40034 80030 800
91 50082 90076 30071 00062 900
300350400450500
425391364341322
889817760714674
16701540143013401270
34403160294027602610
51504740441041303910
99209120849079607520
15 80014 50013 50012 70012 000
27 90025 70023 90022 40021 200
57 00052 40048 80045 80043 200
550600650700750
306292280269259
640611585562541
12101150110010601020
24802360226021702090
37103540339032603140
71406820653062706040
11 40010 90010 40099909630
20 10019 20018 40017 70017 000
41 10039 20037 50036 00034 700
8008509009501000
250242235228222
523506490476463
985953924897873
20201960190018401790
30302930284027602680
58305640547053105170
93009000872084708240
16 40015 90015 40015 00014 600
33 50032 40031 50030 50029 700
11001200130014001500
210201192185178
440420402386372
829791757727701
17001620155014901440
25502430233022402160
49104680449043104150
78307470715068706620
13 80013 20012 60012 10011 700
28 20026 90025 80024 80023 900
16001700180019002000
172166161157152
359348337327318
677655635617600
13901340130012701230
20802010195019001840
40103880376036503550
63906180600058205660
11 30010 90010 60010 30010 000
23 00022 30021 60021 00020 400
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.
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244 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(27)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(d)]*
GAS: UNDILUTED PROPANEINLET PRESSURE: 11.0 in. w.c.PRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 1.50
INTENDED USE: PIPE SIZING BETWEEN SINGLE OR SECOND STAGE (LOW PRESSURE) REGULATOR AND APPLIANCEPIPE SIZE (inch)
NOMINALINSIDE:
1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4
ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
1020304050
291200160137122
608418336287255
1150787632541480
2350162013001110985
35202420194016601480
67904660375032102840
10 8007430597051104530
19 10013 10010 60090308000
39 00026 80021 50018 40016 300
6080100125150
110101948984
231212197185175
434400372349330
892821763716677
13401230114010701010
25702370220020701950
41003770351032903110
72506670621058205500
14 80013 60012 70011 90011 200
175200250300350
7467625851
155140129120107
292265243227201
600543500465412
899814749697618
17301570144013401190
27602500230021401900
48804420406037803350
99509010829077106840
400450500550600
4642403735
9789837873
182167156146138
373344320300283
560515479449424
1080991922865817
17201580147013801300
30402790260024402300
61905700530049704700
650700750800850
3332302928
7066646159
131125120115111
269257246236227
403385368354341
776741709681656
12401180113010901050
21902090200019201850
44604260408039203770
900950100011001200
2726252524
5755535250
1071041009795
220213206200195
329319309300292
634613595578562
1010978948921895
17901730168016301580
36403530342033203230
13001400150016001700
2322212019
4846444240
9086827976
185176169162156
277264253243234
534509487468451
850811777746719
15001430137013201270
30702930280026902590
180019002000
191818
393837
747169
151146142
226219212
436422409
694672652
123011901150
250024202350
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPa* Table entries are rounded to 3 significant digits.
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2452013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(28)SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.3(e)]2
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPaNotes:1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.2 Table entries are rounded to 3 significant digits.
GAS: UNDILUTED PROPANEINLET PRESSURE: 10.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 1.50
INTENDED USE: TUBE SIZING BETWEEN FIRST STAGE (HIGH PRESSURE) REGULATOR AND SECOND STAGE (LOW PRESSURE) REGULATORTUBE SIZE (inch)
NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR1020304050
513352283242215
1060727584500443
2150148011901020901
37602580208017801570
53303670294025202230
11 4007830629053804770
20 50014 10011 30096908590
32 30022 20017 90015 30013 500
67 40046 30037 20031 80028 200
60708090100
194179166156147
401369343322304
816751699655619
14301310122011501080
20201860173016301540
43203980370034703280
77807160666062505900
12 30011 30010 50098509310
25 60023 50021 90020 50019 400
125150175200250
13111810910190
270244225209185
549497457426377
959869799744659
1360123011301060935
29102630242022502000
52304740436040603600
82507470688064005670
17 20015 60014 30013 30011 800
300350400450500
8175706562
168155144135127
342314292274259
597549511480453
847779725680643
18101660155014501370
32603000279026202470
51404730440041303900
10 7009840916085908120
550600650700750
5956545150
121115111106102
246235225216208
430410393378364
610582558536516
13001240119011401100
23502240214020601980
37003530338032503130
77107350704067706520
8008509009501000
4846454442
9996939088
201195189183178
351340330320311
498482468454442
106010301000970944
19201850180017501700
30202920284027502680
62906090591057305580
11001200130014001500
4038373534
8379767370
169161155148143
296282270260250
420400383368355
896855819787758
16101540147014201360
25402430232022302150
53005050484046504480
16001700180019002000
3332313029
6866646260
138134130126122
241234227220214
343331321312304
732708687667648
13201270124012001170
20802010195018901840
43304190406039403830
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246 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(29)SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.3(f)]2, 3
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPaNotes:1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.2 Table entries are rounded to 3 significant digits.3 NA means a flow of less than 10 000 Btu/h (2.93 kW).
GAS: UNDILUTED PROPANEINLET PRESSURE: 11.0 in. w.c.PRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 1.50
INTENDED USE: TUBE SIZING BETWEEN SINGLE OR SECOND STAGE (LOW PRESSURE) REGULATOR AND APPLIANCETUBE SIZE (inch)
NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR1020304050
4531252119
9364514439
1881291048979
329226182155138
467321258220195
997685550471417
18001230991848752
28301950156013401180
58904050325027802470
60708090100
1716151413
3532302827
7166615754
12511510710095
177163152142134
378348324304287
681626583547517
1070988919862814
22402060191018001700
125150175200250
1110NANANA
2421201816
4844403733
8476706558
119108999282
254230212197175
458415382355315
722654602560496
15001360125011701030
300350400450500
NANANANANA
1514131211
3028262423
5248454240
7468636056
158146136127120
285262244229216
449414385361341
936861801752710
550600650700750
NANANANANA
1110NANANA
2221201918
3836343332
5351494745
11410910410096
205196188180174
324309296284274
674643616592570
8008509009501000
NANANANANA
NANANANANA
1817171616
3130292827
4442414039
9390878583
168162157153149
264256248241234
551533517502488
11001200130014001500
NANANANANA
NANANANANA
1514141313
2625242322
3735343231
7875726966
141135129124119
223212203195188
464442423407392
16001700180019002000
NANANANANA
NANANANANA
1212111111
2120201919
3029282727
6462605857
115112108105102
182176170166161
378366355345335
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2472013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(30)SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.3(g)]2
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPaNotes:1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.2 Table entries are rounded to 3 significant digits.
GAS: UNDILUTED PROPANEINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 1.50
INTENDED USE: TUBE SIZING BETWEEN 2 PSIG SERVICE AND LINE PRESSURE REGULATORTUBE SIZE (inch)
NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –
OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959
LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR1020304050
413284228195173
852585470402356
17301190956818725
30302080167014301270
43002950237020301800
91706310506043303840
16 50011 400912078006920
26 00017 90014 40012 30010 900
54 20037 30029 90025 60022 700
60708090100
157144134126119
323297276259245
657605562528498
11501060983922871
16301500139013101240
34803200298027902640
62705760536050304750
98809090845079307490
20 60018 90017 60016 50015 600
125150175200250
10595888272
217197181168149
442400368343304
772700644599531
1100992913849753
23402120195018101610
42103820351032702900
66406020554051504560
13 80012 50011 50010 7009510
300350400450500
6660565350
135124116109103
275253235221209
481442411386365
682628584548517
14601340125011701110
26202410225021101990
41403800354033203140
86107920737069206530
550600650700750
4745434140
9793898682
198189181174168
346330316304293
491469449431415
10501000959921888
18901800173016601600
29802840272026202520
62105920567054505250
8008509009501000
3937363534
8077757271
162157152147143
283274265258251
401388376366356
857829804781760
15401490145014101370
24302350228022202160
50704900475046204490
11001200130014001500
3231302827
6764615957
136130124120115
238227217209201
338322309296286
721688659633610
13001240119011401100
20501950187018001730
42704070390037403610
16001700180019002000
2626252423
5553515048
11110810410199
194188182177172
276267259251244
589570553537522
106010301000966940
16701620157015201480
34803370327031703090
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248 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(31)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.3(h)]1, 2
For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPaNotes:1 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased
by an equivalent length of tubing to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings,bends, or both.
2 Table entries are rounded to 3 significant digits.3 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD,
the greater the gas capacity of the tubing.
GAS: UNDILUTED PROPANEINLET PRESSURE: 11.0 in. w.c.PRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 1.50
INTENDED USE: CSST SIZING BETWEEN SINGLE OR SECOND STAGE (LOW PRESSURE) REGULATOR AND APPLIANCE SHUTOFF VALVETUBE SIZE (EHD)3
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
5101520
72503934
99695549
18112910491
211150121106
355254208183
426303248216
744521422365
863605490425
1420971775661
16381179972847
2830199016201400
3270232019001650
5780411033702930
6550464037903290
25304050
30282320
42393330
82746458
94877466
164151131118
192177153137
325297256227
379344297265
583528449397
762698610548
12501140988884
1480135011701050
2630240020901870
2940268023302080
60708090
19171515
26252322
53494544
60575250
107999490
126117109102
207191178169
241222208197
359330307286
502466438414
805745696656
961890833787
1710159014901400
1900176016501550
100150200250300
1411988
2015141211
4131282523
4736333026
8566605350
9875696157
1591231129990
186143129117107
270217183163147
393324283254234
621506438390357
746611531476434
13301090948850777
148012101050934854
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2492013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(32)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.3(i)]1, 2, 3, 4
GAS: UNDILUTED PROPANEINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 1.50
INTENDED USE: CSST SIZING BETWEEN 2 PSI SERVICE AND LINE PRESSURE REGULATORTUBE SIZE (EHD)5
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
1025304050
426262238203181
558347316271243
927591540469420
1110701640554496
174011201030896806
2170138012701100986
41002560233020101790
47202950269023202070
71304560418036303260
79585147471941163702
15 2009550871075306730
16 80010 700979085007610
29 40018 80017 20014 90013 400
34 20021 70019 80017 20015 400
7580100150200
14714012410186
196189169137118
344333298245213
406393350287248
663643578477415
809768703575501
1460141012601020880
16901630145011801020
26802590233019101660
30532961266221951915
54805300474038603340
62306040541044303840
11 00010 600953078106780
12 60012 20010 90088907710
250300400500
77696053
105968272
191173151135
222203175158
373343298268
448411355319
785716616550
910829716638
1490136011601030
1722157813761237
2980272023502100
3440315027302450
6080556048304330
6900630054604880
For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPaNotes:1 Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 0.5 psi (3.4 kPa) [based on 13 inch water column (3.2 kPa)
outlet pressure], DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulatorare capable of varying with flow rate.
2 CAUTION: Capacities shown in table are capable of exceeding the maximum capacity for a selected regulator. Consult with regulator or tubing manufac-turer for guidance.
3 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased byan equivalent length of tubing to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings, bends, orboth.
4 Table entries are rounded to 3 significant digits.5 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD,
the greater the gas capacity of the tubing.READ ONLY
250 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(33)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.3(j)]1, 2, 3, 4
GAS: UNDILUTED PROPANEINLET PRESSURE: 5.0 psiPRESSURE DROP: 3.5 psi SPECIFIC GRAVITY: 1.50
TUBE SIZE (EHD)5
FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
1025304050
826509461396352
1070664603520463
17101090999867777
2060131011901030926
31502040187016301460
40002550234020301820
78304860443038203410
89505600510044003930
13 1008400768066805990
14 4419339856474696717
28 60018 00016 40014 20012 700
31 20019 90018 20015 80014 100
54 40034 70031 70027 60024 700
63 80040 40036 90032 00028 600
7580100150200
284275243196169
376363324262226
637618553453393
757731656535464
121011701050866755
1490145013001060923
27702680239019401680
31903090276022401930
49204770428035103050
55395372483039833474
10 3009990893072706290
11 60011 20010 00082107130
20 30019 60017 60014 40012 500
23 40022 70020 30016 60014 400
250300400500
150136117104
202183158140
352322279251
415379328294
679622542488
828757657589
1490136011701050
1730157013601210
2740251021801950
3124286524982247
5620512044303960
6390584050704540
11 20010 30089208000
12 90011 70010 2009110
For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPaNotes:1 Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 0.5 psi (3.4 kPa) [based on 13 inch water column (3.2 kPa) out-
let pressure], DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator are capa-ble of varying with flow rate.
2 CAUTION: Capacities shown in table are capable of exceeding the maximum capacity for a selected regulator. Consult with regulator or tubing manufacturer forguidance.
3 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equiv-alent length of tubing to the following equation: L = 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fittings, bends, or both.
4 Table entries are rounded to 3 significant digits.5 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the
greater the gas capacity of the tubing.
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2512013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(34)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.3(k)]*
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPa* Table entries are rounded to 3 significant digits.
GAS: UNDILUTED PROPANEINLET PRESSURE: 11.0 in. w.c.PRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 1.50
INTENDED USE: PE SIZING BETWEEN INTEGRAL SECOND-STAGE REGULATOR AT TANK OR SECOND-STAGE (LOW PRESSURE) REGULATOR AND BUILDING
PIPE SIZE (inch)NOMINAL OD: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 3 4DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
10 340 680 1230 2130 3210 5770 16 000 30 90020 233 468 844 1460 2210 3970 11 000 21 20030 187 375 677 1170 1770 3180 8810 17 00040 160 321 580 1000 1520 2730 7540 14 60050 142 285 514 890 1340 2420 6680 12 90060 129 258 466 807 1220 2190 6050 11 70070 119 237 428 742 1120 2010 5570 10 80080 110 221 398 690 1040 1870 5180 10 00090 103 207 374 648 978 1760 4860 9400100 98 196 353 612 924 1660 4590 8900125 87 173 313 542 819 1470 4070 7900150 78 157 284 491 742 1330 3690 7130175 72 145 261 452 683 1230 3390 6560200 67 135 243 420 635 1140 3160 6100250 60 119 215 373 563 1010 2800 5410300 54 108 195 338 510 916 2530 4900350 50 99 179 311 469 843 2330 4510400 46 92 167 289 436 784 2170 4190450 43 87 157 271 409 736 2040 3930500 41 82 148 256 387 695 1920 3720
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252 2013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(35)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.3(l)]*
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.
GAS: UNDILUTED PROPANEINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 1.50
INTENDED USE: PE PIPE SIZING BETWEEN 2 PSI SERVICE REGULATOR AND LINE PRESSURE REGULATORPIPE SIZE (inch)
NOMINAL OD: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 3 4DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
10 3130 6260 11 300 19 600 29 500 53 100 147 000 284 00020 2150 4300 7760 13 400 20 300 36 500 101 000 195 00030 1730 3450 6230 10 800 16 300 29 300 81 100 157 00040 1480 2960 5330 9240 14 000 25 100 69 400 134 10050 1310 2620 4730 8190 12 400 22 200 61 500 119 00060 1190 2370 4280 7420 11 200 20 100 55 700 108 00070 1090 2180 3940 6830 10 300 18 500 51 300 99 10080 1010 2030 3670 6350 9590 17 200 47 700 92 20090 952 1910 3440 5960 9000 16 200 44 700 86 500100 899 1800 3250 5630 8500 15 300 42 300 81 700125 797 1600 2880 4990 7530 13 500 37 500 72 400150 722 1450 2610 4520 6830 12 300 33 900 65 600175 664 1330 2400 4160 6280 11 300 31 200 60 300200 618 1240 2230 3870 5840 10 500 29 000 56 100250 548 1100 1980 3430 5180 9300 25 700 49 800300 496 994 1790 3110 4690 8430 23 300 45 100350 457 914 1650 2860 4320 7760 21 500 41 500400 425 851 1530 2660 4020 7220 12 000 38 600450 399 798 1440 2500 3770 6770 18 700 36 200500 377 754 1360 2360 3560 6390 17 700 34 200550 358 716 1290 2240 3380 6070 16 800 32 500600 341 683 1230 2140 3220 5790 16 000 31 000650 327 654 1180 2040 3090 5550 15 400 29 700700 314 628 1130 1960 2970 5330 14 700 28 500750 302 605 1090 1890 2860 5140 14 200 27 500800 292 585 1050 1830 2760 4960 13 700 26 500850 283 566 1020 1770 2670 4800 13 300 25 700900 274 549 990 1710 2590 4650 12 900 24 900950 266 533 961 1670 2520 4520 12 500 24 2001000 259 518 935 1620 2450 4400 12 200 23 5001100 246 492 888 1540 2320 4170 11 500 22 3001200 234 470 847 1470 2220 3980 11 000 21 3001300 225 450 811 1410 2120 3810 10 600 20 4001400 216 432 779 1350 2040 3660 10 100 19 6001500 208 416 751 1300 1960 3530 9760 18 9001600 201 402 725 1260 1900 3410 9430 18 2001700 194 389 702 1220 1840 3300 9130 17 6001800 188 377 680 1180 1780 3200 8850 17 1001900 183 366 661 1140 1730 3110 8590 16 6002000 178 356 643 1110 1680 3020 8360 16 200
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2532013 CALIFORNIA PLUMBING CODE
FUEL GAS PIPING
TABLE 1216.2(36)POLYETHYLENE PLASTIC TUBING [NFPA 54-12: TABLE 6.3(m)]2
GAS: UNDILUTED PROPANEINLET PRESSURE: 11.0 in. w.c.PRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 1.50
INTENDED USE: PE TUBE SIZING BETWEEN INTEGRAL SECOND-STAGE REGULATOR AT TANK OR SECOND-STAGE
(LOW PRESSURE) REGULATOR AND BUILDINGPLASTIC TUBING SIZE (CTS)1 (inch)
NOMINAL OD: 1⁄2 1DESIGNATION: SDR 7 SDR 11ACTUAL ID: 0.445 0.927LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR
1020304050
12183675751
828569457391347
60708090100
4642393735
314289269252238
125150175200
31282624
211191176164
225250275300
22212019
154145138132
350400450500
18161515
121113106100
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units perhour = 0.293 kW, 1 inch water column = 0.249 kPaNotes:1 CTS = Copper tube size.2 Table entries are rounded to 3 significant digits.READ O
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254 2013 CALIFORNIA PLUMBING CODE
READ ONLY