city of los angeles · 5/19/2016 · city of los angeles california addendum no. 1 may 19, 2016...

C I T Y O F L O S A N G E L E S C A L I F O R N I A

Addendum No. 1 May 19, 2016

Donald Tillman Water Reclamation Treatment Plant ( DCTWRP) CIP 6171 – DCTWRP BLOWER AIR CLEAN UP SYSTEM

W.O. SZD11260

ERIC GARCETTI MAYOR

GARY LEE MOORE, PE, ENV SP CITY ENGINEER

Bidders are required to acknowledge receipt of this addendum in the space provided on page 1-4 of the Bid Proposal. This addendum consists of this seven-page transmittal and 8 attachments of 55 pages. Bidders are hereby notified of the following changes:

I. MODIFICATIONS TO PLANS:

1. Replace Drawing O-C-4 with the attached O-C-4 Addendum No.1 drawing. (1 page)

2. Replace Drawing S-5 and S-6 with the attached S-5 and S-6 Addendum No.1

drawings. (2 pages) II. MODIFICATIONS TO SPECIFICATIONS:

1. Replace Technical Provisions section 05120, “STRUCTURAL STEEL “, print date 03/17/2015 with the attached Section 05120, “STRUCTURAL STEEL”, print date 05/18/16. (18 pages)

2. Replace Technical Provisions section 13390, “FIBERGLASS REINFORCED

PLASTIC (FRP) DUCTS, print date 9/15/15 with the attached SECTION 13390, “FIBERGLASS REINFORCED PLASTIC (FRP) DUCTS”, print date 05/18/16. (14 pages)

3. Replace Technical Provisions section 13445 , “BIOTRICKILNG FILTER ODOR

CONTROL SYSTEM “, print date 6/26/15 with the attached SECTION 13445, “BIOTRICKILNG FILTER ODOR CONTROL SYSTEM ”, print date 05/18/16. (16 pages)

4. Replace Technical Provisions section 13346 , “BIOTRICKILNG FILTER MEDIA“,

print date 6/26/15 with the attached SECTION 13446, “BIOTRICKILNG FILTER MEDIA”, print date 05/18/16. (2 pages)

III. QUESTIONS FROM BIDDERS (Q) AND ANSWERS FROM CITY (A):

(Q) 1. I am writing you in reference to specification section 13390 for the DCTWRP-Blower

Air Clean-Up System for the Fiberglass (FRP) Ducts. 2.2.C.4.e on page 5 states, “Heat

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C I T Y O F L O S A N G E L E SC A L I F O R N I A



W.O. SZD11260

ERIC GARCETTI MAYOR


Resistivity: Duct shall not exceed a flame spread index of 25 and smoke develop rating of 50 when tested in accordance with ASTM E 84-Tunnel Test.”. The smoke rating of under 50 is unattainable with the choice of resins, Hetron FR 992 or Derakane 510-A, listed in 2.2.D.1. We can apply an Intumescent coating/paint to the exterior to achieve the smoke rating on the exterior but not on the corrosion barrier. You have specified two very good corrosion resistant resins, however, they cannot achieve the specified smoke rating, nor can any corrosion resistant resin. We are attempting to assist you in your specification and application and figure out how to bid on this duct honestly. Please advise.

(A) Refer to new Section 13390 above.

(Q) 2. I noticed that a pump is needed for this project, however unable to find the spec section of the specific pump that is needed. Can you please clarify as I can only find the general pump section?


(Q) 3. In Section 00317 Item H-1, it states “General Liability: Insurance Services Office Commercial General Liability coverage (Occurrence Form CG 00 01) with an edition date prior to 2004.” Our CG 00 01 is the 2013 edition. Will you kindly advise if that will be acceptable?

(A) Yes. See attached for Instruction and Information on Complying With City Insurance Requirements. (2 pages)

(Q) 4. Specification 13445, 1.5 N states that “the CONTRACTOR and media manufacturer shall guarantee the integrity and performance of the reactor structure and reactor media of the BTF for 10 years…” What specifically does the “reactor structure” consist of that the 10 years will apply to? I.E. do we need the FRP I-Beams, FRP grating, PVC Lining, structural and miscellaneous steel, & concrete structure all to have a 10 year guarantee?


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W.O. SZD11260

ERIC GARCETTI MAYOR


(Q) 5. Specification 13445 1.5 N states that “the CONTRACTOR and media manufacturer shall guarantee the integrity and performance of the reactor structure and reactor media of the BTF for 10 years… What events does this apply to? I.E. if an earthquake of a specific magnitude or a piece of maintenance equipment damages the “reactor structure” 9 years after project completion will the contractor be held responsible for repairs/reconstruction? The BTF reactor structure is not a CONTRACTOR designed structure. Please define the “integrity and performance” requirements for the structure.

(A) Refer to new Section 13445 above. (Q) 6. Specification 13445 1.5 N references the “Guarantee/Warranty Section of

Specification Section 01611”. Does this imply that the CONTRACTOR’s bond must be held open for 10 years? Or is the CONTRACTOR’s bond released at the end of one (1) year per Section 01611 and there is to be a manufacturer’s warranty against material defects on specific components of the reactor structure?

(A) Refer to new Section 13445 above. (Q) 7. Specification 13445 2.1 A states that “The Matala media shall be cleaned and re-

used or replaced as seen fit during maintenance.” Will this require that the CONTRACTOR perform the replacement if it is within the 10 year guarantee called out in section 1.5 N? Or will this require that Matala provide new media free of charge if it is within the 10 year guarantee? Who will be responsible for maintenance of the media? Who makes the determination if replacement is required during maintenance? How often is this determination made? What if the constituents that are absorbed by the Matala media change from those shown in the Specification?

(A) Refer to new Section 13445 above. (Q)8. Specification 13346 1.2 states that the BTF media is a pre-negotiated bid per

“Attachment 1 to this specification”. Attachment 1 is not included with the bidding documents. Please provide Attachment 1. Please clarify if the pre-negotiated bid will result in a contract between the City and the media supplier or a contract between the Contractor and the media supplier.

Please provide the pre-negotiated terms (startup, instructions, tolerances, etc.). (A)Refer to new Section 13446 above.

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W.O. SZD11260

ERIC GARCETTI MAYOR


(Q) 9. Specification 13346 1.2 states that the BTF media is a pre-negotiated bid. Will this

pre-negotiated bid include the 10 year guarantee? If replacement of media is required per specification 13445 2.1 A is this included in the pre-negotiated bid?

(A) Refer to new Section 13446 above. (Q) 10. Specification 13390 2.2 D9 states that "Acoustic Insulation and Jacketing will be

required if analysis indicates that noise levels will be greater than tolerable by regulatory standards or the owner's requirements." However section 3.1 C6 states that it "shall be provided and installed where shown on the drawings." Please confirm that Acoustic Insulation and Jacketing will be required only where shown on the drawings.

(A)Refer to new Section 13390 above. (Q) 11. Specification 13346 1.6 B states that the startup of each odor control system must

be "under the supervision of an experienced startup engineer from the manufacturer/supplier". Please clarify which equipment manufacturer/suppliers scope of work requires this startup engineer. Also please clarify that this project's scope of work is considered one odor control system.

(A) Refer to new Section 13445 and 13446 above. (Q)12. Specification 13445 3.4 B states that "the Contractor shall support all runs of

ductwork and piping as indicated on the design drawings and as required to meet the sag requirements specified herein." Specification 15610 1.1 C states that "the Contractor shall furnish pipe supports, hangers, anchors, etc., in addition to those shown on the contract drawings, when necessary to provide a system as specified herein." Please clarify; do the pipe supports shown on the drawings require further design work by the Contractor? If so, what sizes of pipe require design and will this design require a California P.E. stamp?

(A)Bid per Contract Documents.

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W.O. SZD11260

ERIC GARCETTI MAYOR


(Q)13. Specification 15610 3.6 K states that "Pipelines initially containing air, or pipelines which have been opened to atmosphere, shall be purged twice." Will this apply the Foul Air Piping?

(A)Bid per Contract Documents. (Q)14. Specification 15700 lists 4 different types of Plug Valves. Please clarify which type

the contractor should use. (A)Use Non-Lubricated, Eccentric Plug Valve (Q)15. Drawing S-5 - note 5 states "Ground modification, consisting of stone columns and

compaction grouting under a one foot thick drainage layer per project geotech. Specification 02330, to be designed by design-build ground modification contractor." Please provide specification 02330. Also, please provide further information for the design requirements of the stone columns.

(A)Refer to Addendum No.1drawings for S-5 & S-6.

(Q)16. Specification 09800 1.1 B states that stainless steel surfaces shall be painted with system 4. This is an unusual requirement. Please confirm that all stainless steel surfaces shall be painted or adjust accordingly.

(A)316 SS piping shall not be painted. (Q)17. Specification 09800 1.1 B states that platform gratings shall be painted. Please

clarify if both the FRP grating and the steel grating are to be painted - or if grating only in a particular area is to be painted.

(A)Platform grating referenced on the structural plans is typically aluminum grating

per specification 05530, and shall not be painted. (Q)18. Specification 03740 Concrete Repair provides requirements for repairing cracks

and spalls in concrete. In section 3.8 Payments it states that the Contractor is to submit contract bid prices for crack and spall repair with the estimated quantities specified in the Schedule of Work and Prices of the Bid Proposal. No items have been provided for

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W.O. SZD11260

ERIC GARCETTI MAYOR


the contractor to do so in the bid documents. Please provide further direction on the application of this specification section and whether or not this pricing is required.

(A)No cracks were identified during design. Pricing is not required. (Q)19. Please confirm whether or not builders' risk will be required. (A)Yes. Builders ‘risk is required. (Q)20. Please confirm whether or not this project will be subject to the CA Acts of God

Statute. (A)Bid per Contract Documents. (Q)21. Drawing O-C-4, detail 1 shows a 12' minimum clearance between the new FRP

pipe/plenum and the new routing of pipe/conduit. Please confirm that this is supposed to read 12" and not 12'.

(A)Refer to Addendum No. 1 drawing. (Q)22. What are the load ratings on the north end and the south end of the primary tanks?

I.E. the load ratings on the access roads where equipment will be used to lift loads (piping, structural steel, etc.).

(A)This is considered means and methods of construction, and the Contractor

should review and evaluate all referenced as built drawings and existing field conditions in order to safely execute their work plan.

(Q)23. 17400 – 2.7C: “the contractor shall enlist the services of the manufacturer to

produce the screens for process monitoring and controls.” – Please clarify reference to manufacturer; is this process integrator, or hardware manufacturer?

(A)The manufacturer of PLC.

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W.O. SZD11260

ERIC GARCETTI MAYOR


(Q)24. 17400 – 1.1J: Please specify when the environment dictates nitrogen purging of the panel. LCP is mounted just outside of the 3ft envelop stated on drawings; is purging required here?

(A)Nitrogen purge is not available in this facility. Refer to Section 17400 2.3 A.5. Air

Purge System and Detail I-2 on SHT. O-I- 6. (Q)25. 17400 Attachment “C” – Pressure Gages Sh. 1 of 2 – for instruments PI-66014A &

PI-66014C, are measurements for operating pressure and range intended to be in units of feet, as shown, or inches?

(A)Bid per Contract Documents. (Q)26. 17400 Attachment “C” – please provide datasheet information for instrument PI-

66014E. (A)The range for this instrument is 0 – 60 PSIG.

Sincerely, _____________________________ Julie K. Sauter, PE Division Engineer

Project Award and Control Division Bureau of Engineering

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RICHARD A. JONES 5/18/16

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T.O. GRADE(PER CIVIL)

712'-6"

T.O. PLATE 1724'-8"

T.O. PLATE 2731'-5"

T.O. PLATE 3738'-2"

T.O. PLATE 4743'-2"

ROOF LOWEST PT749'-5"

A B

B.O. MAT SLAB710'-6"

TYP CORBEL

AT GRIDS A & B

BIOTRICKLING FILTERLC

FOR STAIRSAND PLATFORMFRAMING PLAN,

SEE SHT -

PVC PROTECTIVELINER PER SPEC 03280(TYP EACH WALL)

#7 @ 12 OC EA FACEVERTICAL (TYP)

#7 @ 12" OC EA FACEHORIZONTAL (TYP)

#7 DOWELS TOMATCH WALLREINF, TYP

2" FRP GRATING

#8 @ 12" OCE.W. T & B

2" FRP GRATING

2" FRP GRATING

PVC PROTECTIVELINER w/ 2" GROUT

HDPE 52" DIA SPOOLSEE MECH DWG'S

EL: 749'-7 1/4"#7 @ 12" OC EWTOP & BOTTOM, TYP

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(FRP) I 12x6

(FRP) I 12x6

S-14A

USE CARE IN PLACINGCONCRETE AT CORBEL.ALL VOIDS UNDERPROTECTIVE LINERMUST BE FILLEDWITH GROUT

#8 @ 12" OCE.W. T & B

FLOOR DRAIN,PER MECH DWGS

FRP COLUMNAS-20

BS-21

DS-21

H.P. OF MAT SLAB714'-0"

DE-GREASER PAD,FOR REINFORCEMENTAND DOWEL INFO. SEE

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10"

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EL: 748'-3"

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#8 @ 12" OC#8 @ 12" OC #8 @ 12" OC, TYP

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DTL, TYP

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(TYP

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#8 @ 12" OCE.W. T & B#8 @ 12" OCE.W. T & B

COORDINATE WITH MECH DWGS FOR DRAIN PIPEROUTE AND ELEVATIONS. WRAP ALL EMBEDEDPIPES WITH APPROVED 3/4" SOFT COMPRESSIBLEMATERIAL. PVC PROTECTIVE LINER AND 2" GROUTSHALL FORM SECURE JOINT WITH (N) FLOOR DRAIN

8" PVC WATER STOPPER SPEC 3290

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1. FOR GENERAL NOTES SEE DRAWING O-S-12. FOR ABBREVIATIONS, SYMBOLS AND LEGEND SEE DRAWING O-S-2.3. FOR STRUCTURAL OBSERVATION AND SPECIAL DEPUTY

INSPECTION REQUIREMENTS SEE DRAWING O-S-3.4. FOR INFORMATION NOT SHOWN SEE TYPICAL DETAILS ON

DRAWINGS O-S-4 THRU O-S-10.5. BOTTOM OF NEW STRUCTURE FOUNDATION SHALL NOT PASS

ABOVE A 1:1 (H:V) PLANE PROJECTED UPWARD FROM THEBOTTOM OF THE EXISTING HEADWORKS BUILDING FOUNDATIONSTRUCTURE.

6. EXTEND HORIZONTAL CJ AROUND CORNERS 5'-0".7. CONTRACTOR SHALL SUBMIT POUR SEQUENCE TO ENGINEER FOR

REVIEW AND APPROVAL. POUR SEQUENCE SHALL INDICATE ALLPROPOSED CONSTRUCTION JOINTS (CJ).

8. CONTRACTOR SHALL SUBMIT MFR'S CERTIFIED SHOP DRAWINGSTO ENGINEER FOR REVIEW AND APPROVAL, FOR THE HDPE ORPVC PROTECTIVE LINER. LINER THICKNESS SHALL NOT BE LESSTHAN 0.065 INCH AND SHALL INCLUDE LOCKING EXTENSIONS TOENGAGE CONCRETE. CONTRACTOR SHALL ALSO SUBMIT MFR'SINSTALLATION REQUIREMENTS. FOR MORE INFORMATION, SEESPECIFICATION. COORDINATE INSTALLATION OF FRP COLUMNBASE PLATE WITH GROUT INSTALL, SEE DETAIL A/S-20.

9. FOR APPROVED FILTER MEDIA, SEE MECH DWGS. MAXIMUM DRYUNIT WEIGHT OF MEDIA SHALL NOT EXCEED 3.78 PCF.

NOTES:

SLOPE PER PLANS

MECH'L2 1/2" PER

1" MIN

4"

1'-0" 2"


#4 CLOSED TIES@ 5" OC, TYP

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DRAWN BY:

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APPROVED BY:

CHECKED BY:

RAMZY C. SAWAYA

RICHARD A. JONESHITESH RAVJI

FESSEHAIE TESFAI

5/18/165/18/16

5/18/165/18/16

1

engcid121

Richard A. jones

T.O. GRADE(PER CIVIL)

712'-6"

T.O. PLATE 1724'-8"

T.O. PLATE 2731'-5"

T.O. PLATE 3738'-2"

T.O. PLATE 4743'-2"

ROOF LOWEST PT749'-5"

B.O. EXISTINGFTG. (FIELD VER.)

705'-2 1/4"

1

1SEE NOTE #9

#7 DOWELS TOMATCH WALLREINF, TYP

#7 @ 12 OC EA FACEHORIZONTAL (TYP)

#7 @ 12 OC EA FACEVERTICAL (TYP)

1 2

B.O. MAT SLAB710'-6"

4'-0"

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AT GRIDS 1 & 2


SEE SHT -

PVC PROTECTIVELINER PER SPEC 03280(TYP EACH WALL)

#8 @ 12" OCE.W. T & B

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#7 @ 12" OC EWTOP AND BOTTOM

VIEWING HATCHWHERE OCCURS,

PER MECH'L

FRP GRATING

PVC PROTECTIVE LINER

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

(FRP)C10 BM

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11

#8 @ 12" OC E.W.

#7 @ 12" OC

#7 @ 12" OC

#7 @ 12" OC

S-22

BIOTRICKLING FILTER

C.J. TYP 1O-S-5


SEE SHT -S-22


#8 @ 12" OC

#7 @ 12" OC EA WAY#7 @ 12" OC EA WAY

CONC BMDTL, TYP

1

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SHALL FORM SECURE JOINT WITH (N) FLOOR DRAIN

#8 @ 12" OCE.W. T & B

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BASE DTL, TYP

5'-0"

1. FOR GENERAL NOTES SEE DRAWING O-S-12. FOR ABBREVIATIONS, SYMBOLS AND LEGEND SEE DRAWING O-S-2.3. FOR STRUCTURAL OBSERVATION AND SPECIAL DEPUTY

INSPECTION REQUIREMENTS SEE DRAWING O-S-3.4. FOR INFORMATION NOT SHOWN SEE TYPICAL DETAILS ON

DRAWINGS O-S-4 THRU O-S-10.5. BOTTOM OF NEW STRUCTURE FOUNDATION SHALL NOT PASS

ABOVE A 1:1 (H:V) PLANE PROJECTED UPWARD FROM THEBOTTOM OF THE EXISTING HEADWORKS BUILDING FOUNDATIONSTRUCTURE.

6. EXTEND HORIZONTAL CJ AROUND CORNERS 5'-0".7. CONTRACTOR SHALL SUBMIT POUR SEQUENCE TO ENGINEER FOR

REVIEW AND APPROVAL. POUR SEQUENCE SHALL INDICATE ALLPROPOSED CONSTRUCTION JOINTS (CJ).

8. CONTRACTOR SHALL SUBMIT MFR'S CERTIFIED SHOP DRAWINGSTO ENGINEER FOR REVIEW AND APPROVAL, FOR THE HDPE ORPVC PROTECTIVE LINER. LINER THICKNESS SHALL NOT BE LESSTHAN 0.065 INCH AND SHALL INCLUDE LOCKING EXTENSIONS TOENGAGE CONCRETE. CONTRACTOR SHALL ALSO SUBMIT MFR'SINSTALLATION REQUIREMENTS. FOR MORE INFORMATION, SEESPECIFICATION. COORDINATE INSTALLATION OF FRP COLUMNBASE PLATE WITH GROUT INSTALL, SEE DETAIL A/S-20.

9. FOR APPROVED FILTER MEDIA, SEE MECH DWGS. MAXIMUM DRYUNIT WEIGHT OF MEDIA SHALL NOT EXCEED 3.78 PCF.

NOTES:

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SCALE: 3/8" = 1'-0" S-1BE-W SECTION

S-2B

S-3B

S-4B

NO

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15/

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DRAWN BY:

ENGINEER:

APPROVED BY:

CHECKED BY:

RAMZY C. SAWAYA

RICHARD A. JONESHITESH RAVJI

FESSEHAIE TESFAI

5/18/16

5/18/165/18/16

5/18/16

1

engcid121

Richard A. jones

SECTION 05120 STRUCTURAL STEEL PART 1 -- GENERAL 1.1 THE REQUIREMENT

A. The CONTRACTOR shall provide all labor, tools, material, and equipment necessary so as to furnish, fabricate, and install, the structural steel framing and all appurtenant metal parts required for permanent connection of the structural steel, complete, all in accordance with the requirements of the Contract Documents. The CONTRACTOR shall also design all temporary construction braces and sequences of erection.

1.2 RELATED WORK SPECIFIED ELSEWHERE

A. The WORK of the following Sections or Divisions applies to the WORK of this Section. Other Sections of the Specifications, not referenced below, shall also apply to the extent required for proper performance of this WORK.

1. Section 03250 Concrete Accessories 2. Section 03315 Grout 3. Section 05300 Metal Deck 4. Section 05400 Cold Formed Light Metal Framing 5. Section 05500 Miscellaneous Metalwork 6. Section 05510 Metal Stairs 7. Section 07830 Roof Hatch 8. Section 09800 Protective Coating 9. Section 09900 Painting

B. Associated products furnished but installed under other sections:

1. Anchors for casting into concrete 2. Anchors for embedding into masonry

3. Loose bearing plates to receive Structural Steel

1.3 REFERENCE SPECIFICATIONS, CODES AND STANDARDS

A. Comply with reference standards and Standard Specifications of the GENERAL REQUIREMENTS.

B. Comply with the following American Institute of Steel Construction (AISC) references, as applicable:

1. AISC 303-10, "Code of Standard Practice for Steel Buildings and Bridges."

2. AISC "Steel Construction Manual”, Thirteenth Edition

3. ANSI/AISC 360-10, "Specification for Structural Steel Buildings"

4. ANSI/AISC 341-10 "Seismic Provisions For Steel Buildings” and including the “Commentary” 5. ANSI/AISC 358-10 “Prequalified Connections for Special and Intermediate Steel Moment

DCTWRP CIP 6171 STRUCTURAL STEEL BLOWER AIR CLEAN-UP SYSTEM DIVISION 5 05-18-2016 05120-1

Frames for Seismic Applications”, including Supplement No. 1 (ANSI/AISC 358s1-11)

C. Comply with the current provisions of the following American Welding Society (AWS) Codes and Specifications, as applicable:

1. AWS B2.1 Specification for Welding Procedure and Performance Qualification 2. AWS D1.1 Structural Welding Code – Steel

3. AWS D1.8 Structural Welding Code – Seismic Supplement

D. Comply with the current references of the American Society for Nondestructive Testing, Inc.

1. SNT TC-1A Recommended Practice – Personnel Qualification and Certification

in Nondestructive Testing. 2. ANSI/ASNT CP-189 Standard for the Qualification and Certification of Nondestructive

Testing Personnel. E. Comply with the Research Council on Structural Connections (RCSC) “Specification for Structural

Joints Using ASTM A325 or A490 Bolts”, as applicable. F. Comply with the current provisions of the following Codes and Standards, as applicable:

1. American Society of Testing & Materials (ASTM)

ASTM A36/A36M Standard Specification for Carbon Structural Steel

ASTM A53/A53M Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-

Coated, Welded and Seamless ASTM A108 Standard Specification for Steel Bar, Carbon and Alloy, Cold

Finished ASTM A123/A123M Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on

Iron and Steel Products

ASTM A153/A153M Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A167 Standard Specification for Stainless and Heat-Resisting Chromium-

Nickel Steel Plate, Sheet, and Strip

ASTM A193/A193M Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High Temperature or High Pressure Service and Other Special Purpose Applications

ASTM A194/A194M Standard Specification for Carbon and Alloy Steel Nuts for Bolts for

High Pressure and High Temperature Service

ASTM A307 Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength

ASTM A325 Standard Specification for Structural Bolts, Steel, Heat Treated,

120/105 ksi Minimum Tensile Strength

ASTM A354 Standard Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners.

ASTM A 370 Standard Test Methods and Definitions for Mechanical Testing of


Steel Products.

ASTM A490 Standard Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength. “Conform to -08a or later revisions when Zinc coating is required”

ASTM A496/A496M Standard Specification for Steel Wire, Deformed, for Concrete

Reinforcement

ASTM A500/A500M Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

ASTM A563 Standard Specification for Carbon and Alloy Steel Nuts ASTM A572/A572M Standard Specification for High Strength Low-Alloy Columbium-

Vanadium Steels of Structural Quality.

ASTM A992/A992M Standard Specification Steel for Structural Shapes For Use in Building Framing

ASTM E709 Standard Guide For Magnetic Particle Testing

ASTM F436 Standard Specification for Hardened Steel Washers ASTM F959 Standard Specification for Compressible-Washer-Type Direct

Tension Indicators for Use with Structural Fasteners

ASTM F1554 Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength

ASTM F1852 Standard Specification for “Twist Off” Type Tension Control

Structural Bolt/Nut/Washer Assemblies, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

ASTM F2280 Standard Specification for “Twist Off” Type Tension Control

Structural Bolt/Nut/Washer Assemblies, Steel, Heat Treated, 150 ksi Minimum Tensile Strength

2. Government Standards:

City of Los Angeles, Department of Building and Safety (LADBS) applicable Information Bulletins City of Los Angeles, Department of Building and Safety, “Standard Quality Assurance Plan for Steel Moment Frames” CSS Caltrans Standard Specifications.

3. Trade Standards and References:

SP-1 “Solvent Cleaning”, by the Steel Structures Painting Council, SSPC (also known as The Society of Protective Coatings).

SP-2 “Hand Tool Cleaning” by the Steel Structures Painting Council,

SSPC. SP-3 “Power Tool Cleaning”, by the Steel Structures Painting Council,

SSPC.


1.4 CONTRACTOR SUBMITTALS

A. Submittals shall be made in accordance with the GENERAL REQUIREMENTS and include the items indicated herein, and prepared in advance of fabrication, erection, and before incorporated into the work, for review and acceptance by the ENGINEER.

B. Certifications and Proof of Qualifications from the following:

1. Fabricator and erector including lead personnel, and shop and field welders

2. Testing laboratory and technician conducting any of the required tests

3. Non-destructive testing (NDT) technician

4. Shear connector manufacturer authorization for each Installer/Operator

C. Product Data:

1. Submit fabricator’s or manufacturer’s certification, specifications, recommended installation instructions, laboratory test reports, and all other data required to prove compliance with these specification requirements for the following items.

a. Structural steel, including certified copies of mill test reports covering chemical and

physical properties.

b. High strength bolts, including nuts and washers, and RCSC related specification.

c. Unfinished bolts and nuts

d. Shear connectors and corresponding welding equipment approval by LADBS

e. Structural steel primer paints and finish coatings

2. Shop drawings shall include all shop and erection details showing all members and their connections, shear connectors, anchor bolt layouts, schedules for fabrication procedures, and diagrams showing the sequence of erection. In addition, the following requirements shall be met:

a. Members and connections for any portion of the structure not shown on the contract

drawings shall be detailed by the fabricator and indicated on the shop drawings.

b. Include details of cuts, connections, camber, holes, and other pertinent data, as well as items needed for other work; list types of paints and finish coatings, which are compatible.

c. All welds shall be indicated by standard welding symbols of the AWS. Show location,

size, type, and length of welds. Clearly distinguish between shop and field welds.

d. All bolts and corresponding holes shall be called out. Show location, size, type, and identify pretensioned and slip-critical high strength bolted connections including the amount of tensioning required.

e. For connections containing a combination of bolts and welds, indicate sequence of

installation between the two connector types.

f. Shop drawings shall show reference marks and cross references to drawings.

g. Fabricator shall be responsible for correct interpretation of the contract drawings and shall call to the ENGINEER's attention any discrepancies found.


h. No deviation shall be made from the contract drawings without prior approval of the ENGINEER in writing.

i. Provide setting drawings, templates and directions for installing anchor bolts and other

required anchors.

j. Identify locations of welded and/or bolted connections which require necessary testing.

k. All framing shop drawings shall include final flooring, roofing, parapet and any other relevant elevations.

D. The CONTRACTOR shall submit an erection plan for the structural steel framing that includes

drawings and procedures. This erection plan shall conform to the requirements of the AISC “Code of Standard Practice for Steel Building and Bridges”. The erection plan shall include shoring and bracing drawings and describe all necessary temporary supports, including the sequence of installation and removal. Submittal shall be prepared and signed by a California licensed civil or structural engineer and be in accordance with Cal OSHA regulations.

E. Test Reports: Submit reports of tests conducted on shop and field welds and bolted connections,

including data on type of tests conducted and test results.

F. Welding procedure specifications and welding procedure qualification tests, including those for weld repair, shall be submitted to and approved by the ENGINEER, in triplicate.

G. Documentation and information required in relevant AISC references, including Appendix Q and W of

“Seismic Provisions for Steel Buildings. 1.5 QUALITY ASSURANCE

A. Qualifications 1. Fabricator: Company specializing in the fabrication of the work in this Section shall have a

minimum 5-year documented experience. Fabricator shall be a City of Los Angeles Department of Building & Safety (LADBS) licensed/certified Fabricator Shop. When work involves high strength steel, fabricator shall also show proof of compliance with LADBS Information Bulletin P/BC 2008-032 or latest revisions.

2. All welders, excluding shop welders, shall be City of Los Angeles Department of Building &

Safety (LADBS) certified welders, in the classification of the work being performed.

3. Erector: Company specializing in the installation of the work of this Section shall have a minimum 5-years documented experience.

4. Technicians performing non-destructive testing (NDT) shall be Certified Level II Technicians in

accordance with the American Society for Non-destructive Testing (ASNT)’s references. Certification shall be for the particular NDT being performed.

B. Inspection:

1. Quality Control is the responsibility of the CONTRACTOR for its forces and those of its Subcontractors. Inspection will be provided by the City in accordance with “INSPECTION OF THE WORK” of the GENERAL REQUIREMENTS.

2. Schedule and coordinate with the INSPECTOR all necessary tests, special inspection, and

overall general quality assurance inspection. 3. Inspection by Others: Schedule and coordinate all necessary tests, inspections, and quality

control services with the authorities having jurisdiction, including the Department of Building and Safety and notify the INSPECTOR that such activity is taking place.

4. If, after fabrication and inspection, the work of this Section is found to be defective and to


require re-inspection, cost of such re-inspection will be paid by the CONTRACTOR.

5. Provide labor, equipment, and facilities needed to move and handle the materials to be inspected.

6. Provide access for the testing agencies and inspectors to locations where structural steel

work is being fabricated or produced, so that required testing and inspection may be accomplished.

C. Shop Inspection, Fabrication and Tests.

1. Quality Control is the responsibility of the CONTRACTOR for its forces and those of its

Fabricators/Subcontractors. As a minimum, conform to Section 8 of AISC’s Code of Standard Practice, and when high strength steel is required in the work, conform to LADBS Information Bulletin P/BC 2008-032 or latest revision.

2. Shop Inspection shall be in accordance with “SAMPLING, TESTING AND FABRICATION

INSPECTION” of the GENERAL REQUIREMENTS. The CONTRACTOR shall furnish all facilities for the inspection of materials and workmanship in the shop and the INSPECTOR shall be allowed free access to the necessary parts of the work. The INSPECTOR shall have the authority to reject any materials or work not meeting the requirements of these Specifications. Approval of the work by the INSPECTOR, however, shall not relieve the CONTRACTOR of the responsibility of providing a fabricated structure that is in accordance with the drawings and specifications.

3. High-strength bolts shall be installed and verified using the procedure(s) indicated in the

Contract Documents, as set forth in the current “Specification for Structural Joints Using ASTM A325 or A490 Bolts”.

4. Structural Steel Material Testing:

a. Except where specified otherwise, the City’s Standards Laboratory; selected testing

laboratory will pick up specimens and make required tests in accordance with the GENERAL REQUIREMENTS and this Section. This is in addition to any and all requirements performed by the Mill/Fabricator to prepare the material’s mill certification.

b. Test specimens shall be furnished by the steel fabricator at no additional cost, and shall

be selected by the INSPECTOR from the heat of material being supplied. c. Each specimen shall be machined by the CONTRACTOR to dimensions required by

ASTM A370.

d. Cost of procuring, making, preparing and machining test specimens shall be considered to be included in CONTRACTOR’S bid.

e. If structural steel can be identified by heat or melt number, and if accompanied by mill

analysis and test reports, not less than one tension and one bent test will be made for each ten tons or fractional part thereof.

f. If structural steel cannot be identified, it shall not be permitted on the project. Structural

steel shall not be erected without any test results and their acceptance by the ENGINEER.

g. If steel pipe can be identified by heat or melt numbers, or manufacturer’s name, not less

than one tension test and one bent test will be made for each ten tons or fractional part thereof.

h. If a test specimen fails to comply with the specified requirements, not less than two (2)


tension and two (2) bent test will be made for each five tons or fractional part thereof of that heat of material.

i. Additional tests may be required when deemed necessary by the ENGINEER.

5. Fabrication of high strength steel shall conform to LADBS requirements as stipulated in

Information Bulletin P/BC 2008-032 or latest revision, except field welding is permitted when specifically shown on the Contract Drawings.

6. Welding Inspection:

a. Except where specified otherwise, the City shall provide Deputy Inspector’s visual inspection of welded work. However, where third-party inspection is required, the CONTRACTOR shall perform welding and obtain welding inspection by a qualified inspector from a testing laboratory approved by the INSPECTOR and the Los Angeles City Department of Building and Safety.

b. Inspect every layer of weld for quality, penetration, and conformity with the design

requirements.

c. When the CONTRACTOR retains the services of a qualified welding inspector, that inspector shall submit a signed report to the ENGINEER and the INSPECTOR, verifying that: i. The welding is adequate and was performed in conformity with design

requirements. ii. Adequate testing methods have been used to determine the quality of the welding.

d. Welded connections shall be inspected for conformance with the requirements of AWS

D1.1 and these specifications. e. CONTRACTOR shall provide all equipment for tests specified at no cost to the City.

f. Welded headed anchors / shear connectors shall be visually inspected by qualified

personnel as per AWS D1.1. See LADBS Information Bulletin P/BC 2008-046, “Composite Steel Concrete Construction” for additional requirements, including bend test of shear connectors.

7. Non-destructive testing of shop welds shall include, but not be limited to, the following:

a. Thirty percent of full penetration welds shall be ultrasonically or radiographically tested by a qualified NDT technician per AWS D1.1 and as noted herein. However, when approved by the ENGINEER, the non-destructive testing rate for an individual welder or welding operator may be reduced to 10 percent, provided the reject rate is demonstrated to be 5 percent or less of the welds tested for the welds or welding operator. Perform all tests in the presence of the INSPECTOR. i. Exception: For elements/connections that are part of the seismic load resisting

system, the CONTRACTOR shall conform to more stringent requirements and increased percentage of testing as noted in the referenced documents including LADBS, “Standard Quality Assurance Plan for Steel Moment Frames” and AISC “Seismic Provisions For Steel Buildings” at no additional cost to the City.

b. Ten percent of partial penetration, fillet, plug, and slot welds, shall be tested using

magnetic particle method by qualified NDT technicians per AWS D1.1. Magnetic particle testing shall be in accordance with ASTM E709. If more than twenty percent of the tested welds fail the test, additional welds as determined by the ENGINEER, shall be tested. Perform in the presence of the INSPECTOR. i. Exception: For elements/connections that are part of the seismic load resisting

system, the CONTRACTOR shall conform to more stringent requirements and


increased percentage of testing as noted in the referenced documents including LADBS, “Standard Quality Assurance Plan for Steel Moment Frames” and AISC “Seismic Provisions For Steel Buildings” at no additional cost to the City.

c. The CONTRACTOR shall notify the ENGINEER of any non-destructive testing failure

result in writing prior to repair. Repair method to be approved by the ENGINEER prior to undertaking the repair.

d. The costs of all tests , with the exception of the ultrasonic testing conducted by the City,

specified herein shall be borne by the CONTRACTOR.

8. Welds that are required by the INSPECTOR to be corrected or redone shall be retested as directed, at the CONTRACTOR’s expense, and to the satisfaction of the ENGINEER and the INSPECTOR.

9. Fabrication of structural steel for bridge structures shall conform to the appropriate subsections

of Section 55-3 of the CSS.

D. Field Inspection, Installation, and Tests 1. Quality Control is the responsibility of the CONTRACTOR for its forces and those of its

Subcontractors. The ENGINEER and the INSPECTOR reserve the right to inspect the work at all times. The CONTRACTOR shall provide temporary ladders, steps, scaffolding, planking, etc., necessary for safe access to the work to be inspected.

2. The Contractor shall arrange and pay for such additional tests and inspections of field work as

are required by the Building Code and governing authorities and will prepare test reports for the ENGINEER’s review and acceptance.

3. The testing agency will conduct and interpret the tests, and will state in each report whether the

inspected work complies with requirements, specifically stating all deviations that exist. 4. Field inspection may include, but not be limited to, the following:

a. Inspection of erection steel work for conformance with this specification and the

drawings.

b. Inspection of high strength bolted connections in accordance with “Specification for Structural Joints Using ASTM A325 or A490 Bolts”, including pre-installation verification (Section 7), installation (Section 8), and Inspection (Section 9).

c. Verification of welding procedures specification, welding procedures, and qualifications of

welding operators, welders and tackers in accordance with AWS D1.1.

d. Visual inspection of field welds and field welded headed anchors\shear connectors in accordance with AWS D1.1 and LADBS, including the bend test.

5. Non-destructive testing of field welds shall include, but not be limited to, the following:

a. Thirty percent of full penetration welds shall be fully ultrasonically or radiographically

tested by qualified NDT personnel as per AWS D1.1. If more than ten percent of the tested welds fail the test, additional welds as determined by the ENGINEER, shall be tested. i. Exception: For elements/connections that are part of the seismic load resisting



b. Ten percent of partial penetration, fillet, plug, and slot welds, shall be tested using

magnetic particle method by qualified NDT personnel as per AWS D1.1. Magnetic particle testing shall be in accordance with ASTM E709. If more than twenty percent of the tested welds fail the test, additional welds as determined by the ENGINEER, shall be tested. i. Exception: For elements/connections that are part of the seismic load resisting


c. The CONTRACTOR shall notify the ENGINEER of any non-destructive testing failure

result in writing prior to repair. Repair method to be approved by the ENGINEER prior to undertaking the repair.

6. The testing agency will conduct and interpret the tests, and will state in each report whether the

inspected work complies with requirements, specifically stating all deviations there from. 7. The costs of all tests, with the exception of the ultrasonic testing conducted by the City,

specified herein shall be borne by the CONTRACTOR. 8. Welds that are required by the INSPECTOR to be corrected or redone shall be retested as

directed, at the CONTRACTOR’s expense, and to the satisfaction of the ENGINEER and the INSPECTOR.

E. Structural Observation: The Engineer of Record or its designee shall perform the structural

observation as stipulated in the Contract Documents and as required by LADBS. Upon completion of the observation of each designated stage of construction or element, the observer shall prepare, sign, and seal the necessary report and submit it to the building official. A copy shall also be provided to the ENGINEER and INSPECTOR. The CONTRACTOR shall submit a written request to the ENGINEER indicating the need for structural observation at least 48 hours before the observation is needed.

PART 2 -- PRODUCTS 2.1 MATERIALS

A. General: New tested and fabricated stock complying with applicable grades and standards hereinafter referenced. Unless noted otherwise, the material specification noted hereon shall apply. No dual rated steel shall be allowed in this project.

B. Plates and Bars: Per ASTM A36 and ASTM A572 Grade 50 C. Channels and Angles: Per ASTM A36

D. W-Shapes: Per ASTM A992

E. Hollow Structural Sections (HSS): Per ASTM A500, Grade B, structural tubing.

F. Steel Pipe: Per ASTM A53, Type E or S, Grade B

1. Weight Class: As indicated 2. Finish: Black, except where indicated to be galvanized.

G. Stainless steel shapes and plates: Per ASTM A167, Type 316L H. E70 - T4 weld metal shall not be used for any welds. All welds indicated in members and connections


of the seismic load resisting system shall be made with filler metal with a Charpy V-Notch toughness of 20 ft-pounds minimum at zero degrees Fahrenheit. See AISC Seismic Provisions and Contract Drawings for additional requirements.

I. Structural steel shall be cleaned and coated with a shop paint primer; except, that primer shall be

omitted for members to be covered with galvanized coating or fire proofed with no further coating.

J. All structural members shall be furnished full length without splices unless otherwise noted or approved by the ENGINEER.

K. Primer: Approved primer indicated in Section 09800, “Protective Coating”

L. Paint: Approved paint indicated in Section 09900, “Painting”

M. Teflon Base Plates: Reinforced Teflon, pre-bonded to steel plates and combined with neoprene

bearing pad and having a static friction coefficient of maximum 6 percent, as manufactured by Fluorocarbon Company of Anaheim or equal.

N. Non-Shrink Grout: Approved non-shrink grout in accordance with Section [03315], “Grout”. Minimum

compressive strength shall be 3,000 psi in 7 days.

O. Open-Web Steel Joists: In accordance with Section 05210

P. Galvanizing: Per A123 or A153 and in accordance with Section 05500, “Miscellaneous Metal Works”.

Q. Galvanizing Repair Material: Per Section 05500, “Miscellaneous Metal Works” 2.2 BOLTS, CONNECTORS, AND ANCHORS

A. High-strength Bolts, Nuts, and Washers: Per ASTM A325, Type 1, heavy hex steel structural bolts; ASTM A563 heavy hex carbon steel nuts; and ASTM F436 hardened carbon steel washer.

1. Finish: Plain, except where indicated otherwise 2. Direct-Tension Indicators: Per ASTM F959, Type 325, compressible-washer-type.

B. Tension-Control, High-Strength Bolt-Nut-Washer Assembly: ASTM F1852, Type1, heavy hex head steel structural bolts with splined ends; ASTM A563 heavy hex carbon-steel nuts; and ASTM F436 hardened carbon-steel washers. Only manufacturer applied lubricant is permitted..

1. Location: As substitutes where A325, Type 1, plain bolts are specified, when approved by the

ENGINEER. 2. Finish: Plain, unless noted otherwise. 3. Quality Assurance: Meet pre-installation verification, installation, and inspection requirements of

RCSC specifications. C. High-Strength Bolts, Nuts, and Washers: Per ASTM A490, Type 1, heavy hex steel structural bolts;

ASTM A563 heavy hex carbon-steel nuts; and ASTM F436 hardened carbon-steel washers, plain. Locations as indicated on Drawings.

1. Direct-Tension Indicators: Per ASTM F959, Type 490, compressible-washer-type, plain 2. [blank]

D. Tension-Control, High-Strength Bolt-Nut-Washer Assembly: ASTM F2280, Type 1, heavy hex head steel structural bolts with splined ends; ASTM A563 heavy hex carbon-steel nuts; and ASTM F436 hardened carbon-steel washers. Only manufacturer applied lubricant is permitted.

1. Location: As substitutes where A490, Type 1, plain bolts are specified, when approved by the

ENGINEER.


2. Finish: Plain 3. Quality Assurance: Meet pre-installation verification, installation, and inspection requirements of

RCSC specifications. E. Machine bolts with nuts and washers: Per ASTM A307; hot dip galvanize per A153 not less than 1.25

oz per square foot; use self locking nuts or lock washers with plain nuts. Locations as indicated on Drawings.

F. Bolts and washers to connect dissimilar metals: Per ASTM A193 and A194, Type 316 stainless steel

G. Shear Connectors: ASTM A108, Grade 1015 through 1020, headed-stud type, threaded type, cold-

finished carbon steel; ASTM A496, deformed bar anchor; conform to AWS D1.1, Type B.

1. Location of each type: As indicated on the Contract Drawings H. Unheaded Anchor Rods: ASTM F1554, Grade 36.

1. See Specification 03250 for related information. 2. Configuration: Hooked, unless noted otherwise. 3. Nuts: ASTM A563 hex carbon steel 4. Plate washers: ASTM A36 carbon steel 5. Washers: ASTM F436 hardened carbon steel 6. Finish: Plain

I. Headed Anchor Rods: ASTM F1554, Grade 36, straight, unless noted otherwise.

1. Nuts: ASTM A563 hex carbon steel. 2. Plate Washers: ASTM A36 carbon steel 3. Washers: ASTM F436 hardened carbon steel 4. Finish: Plain.

J. Threaded Rods: ASTM A36

1. Nuts: ASTM A563 hex carbon steel. 2. Washers: ASTM F436 hardened carbon steel 3. Finish: Plain.

K. Adhesive concrete anchors and/or anchor rods shall use stainless steel anchor rods/assemblies

conforming to the requirements of Section 03250 and associated current City of Los Angeles Research Report.

L. Eye Bolts and Nuts: ASTM A108, Grade 1030, cold-finished carbon steel M. Sleeve Nuts: ASTM A108, Grade 1018, cold-finished carbon steel.

PART 3 -- EXECUTION 3.1 GENERAL

A. Surface Conditions: The CONTRACTOR shall examine the areas and conditions under which work of this Section will be performed. Correct conditions detrimental to timely and proper completion of the Work. Do not proceed until detrimental conditions are corrected.

B. Measurement: The CONTRACTOR shall verify all dimensions, grades, elevations, job conditions, and

shall make any field measurements necessary and shall be fully responsible for accuracy and layout of work. The CONTRACTOR shall review the Drawings and any discrepancies shall be reported to the ENGINEER for clarification prior to starting fabrication and erection.


C. Pre-Fabrication And Pre-Erection Conference: Coordinate and arrange for pre-fabrication and pre-erection conferences with the fabricator or manufacturer, INSPECTOR and ENGINEER as required by the Code Requirements and LADBS. Do not proceed with any work prior to the conferences taking place.

3.2 FABRICATION

A. General:

1. Workmanship: In accordance with AISC Specification, Code of Standard Practice, applicable AISC references, with modifications and additional requirements specified here in, as indicated on the Drawings, and as indicated on the shop drawings.

2. Safety Precautions: Conform to latest edition of ANSI/AWS Z49.1, “Safety in Welding and

Cutting and Allied Processes”. The Contractor shall determine the applicability of any regulatory limitation prior to use.

B. Shop Fabrication and Assembly of Structural Steel:

1. Fabricate items of structural steel in accordance with AISC specifications, and as indicated

on the approved Shop Drawings. Fabrication and assembly shall be done in the shop to the greatest extent possible.

2. Properly mark and match-mark materials for field assembly and for identification as to

location for which intended. 3. Fabricate for delivery sequence which will expedite erection and minimize field handling of

materials. 4. Where finishing is required, complete the assembly, including welding of units, before start of

finishing operations. 5. Provide finish surfaces of members exposed in the final structure free from markings, burrs,

and other defects. 6. Joints and intersections to be accurately made, tightly fitted, true to plane and accurately

fastened.

7. Camber structural steel where indicated. 8. Care shall be taken so over grinding does not occur. The maximum reduction of the base

metal thickness, as delivered, shall not be more than 1/32-in or 5% of the element/member thickness, whichever is less. Welds shall not be over ground so as to reduce their effective throat size below what is called for on the drawings.

C. Architecturally Exposed Structural Steel (AESS)

1. Comply with fabrication requirements, including tolerance limits, of AISC’s “Code of Standard Practice for Steel Buildings and Bridges” for steel identified as AESS.

2. Fabricate with exposed surfaces smooth, square, and free of surface blemishes including

pitting, rust, scale, and roughness.

3. Remove blemishes by filling or grinding and sanding or by welding and grinding and sanding, before cleaning, treating, and shop priming.

4. Fabrication to be performed at LADBS approved fabrication facility.


5. Remove backing bars or runoff tabs, back gouge, and grind and sand steel smooth.

6. Verify that weld sizes, fabrication sequence, and equipment used for AESS will limit distortions to allowable tolerance. Prevent weld show-through on exposed steel surfaces.

a. Grind butt welds flush. b. Grind or fill exposed fillet welds to smooth profile. Dress exposed welds

D. Thermal Cutting: When permitted, perform thermal cutting by machine to the greatest extent

possible.

E. Bolt Holes: Cut, drill, or punch standard bolt holes perpendicular to metal surfaces.

F. Finishing: Accurately finish ends of columns and other members transmitting bearing loads.

G. Cleaning: Clean and prepare steel surfaces that are to remain unpainted according to SSPC-SP 1, “Solvent Cleaning”.

H. Shear Connectors: Prepare steel surfaces as recommended by manufacturer of shear connectors.

Use automatic end welding of headed-stud shear connectors per AWS D1.1 and the manufacturer’s written instructions.

I. Bases and Bearing Plates: Shop weld to columns and to members which are attached to concrete.

3.3 CONNECTIONS

1. Method: Bolted or welded as indicated on the Drawings. 2. Provide bolts and washers of types and sized required for completion of shop fabrication or

field erection. 3. Unless otherwise indicated on the drawings, minimum beam framing connections shall be in

accordance with AISC “Steel Construction Manual”, have a minimum of two ¾-inch diameter high strength bolts, and be able to develop full strength of members joined.

4. Unless otherwise indicated on the drawings, double-angle members shall be connected

together in accordance with AISC Specifications, with a ¾-in diameter, high-strength bolt and a filler plate or welded filler plate.

5. Column ends shall be square and milled to have full bearing at splices and at end plates. 6. The CONTRACTOR shall notify the INSPECTOR to make arrangements to inspect high

strength bolted connections and welded connections and to perform testing and prepare test reports. This inspection shall be in addition to the inspection specified in subsections 1.5 of this specification.

7. High Strength Bolted Construction:

a. Install high strength threaded fasteners in accordance with RCSC Specifications. b. Use ASTM A325 bolts, with slip critical connections and Type A surface, unless

noted otherwise, except for handrails, ladders, and girt connections.

c. CONTRACTOR shall provide all equipment for testing of bolted connections as required by Code or Contract Documents at no additional cost to the City.

3.4 WELDED CONSTRUCTION:

A. Comply with all AWS Referenced Documents and this Contract for procedures, appearance, and quality of welds and welders, methods used in correcting welding work, and the following:


1. Shop welding to be done by a fabricator licensed by LADBS.

2. All shop and field welders shall be LADBS certified. 3. Repair welds only after a repair is deemed an acceptable remedy by the ENGINEER using

methods also approved by the ENGINEER prior to performing the repair. Cost of repairs to be borne by the CONTRACTOR.

4. Assemble and weld built-up sections by methods which will produce true alignment of axes

without warp. 5. Furnish templates and other devices as necessary for presetting bolts and other anchors to

accurate locations. CONTRACTOR shall furnish shop drawing prepared by a California Licensed Civil or Structural Engineer.

B. Stainless steel welding shall conform to the details and standards of workmanship of this specification

and AWS D1.1, except that the prequalified welds for carbon steel are not applicable to stainless steel. Welders and weld procedures for stainless steel shall be specifically qualified per AWS B2.1 for the type of stainless steel to be welded and LADBS. Welders and weld procedures for welding of stainless steel to carbon steel shall be qualified per AWS B2.1 and LADBS.

C. Unless otherwise shown, all butt and bevel welds shall be complete penetration.

3.5 HOLES FOR OTHER WORK

A. Provide holes required for securing other work to structural steel framing, and for passage of other work through steel framing members, as shown on the Shop Drawings.

B. Provide threaded nuts welded to framing, and other specialty items as shown, to receive other work C. Cut, drill, or punch bolt holes perpendicular to metal surfaces.

D. Do not thermally cut holes or enlarge holes by burning.

E. Drill holes in bearing plates.

3.6 SHOP PAINT PRIMER

A. General:

1. Apply shop paint primer to structural steel work in accordance with Section [09800], “Protective Coating”.

2. Shop prime steel surfaces except for the following:

a. Surfaces embedded in concrete or mortar. However, extend priming of partially

embedded members to a depth of 2-inches. b. Surfaces to be welded and high-strength bolted with slip-critical connections. Such

areas shall be primed and finish coated after connection is made and inspected. See Figure C-3.1 of RSCS Specification for illustration of bolted connection requirements.

c. Surfaces to receive sprayed-on-fireproofing.

d. Galvanized surfaces.

3. Apply one coat of primer and two coats of paint to surfaces which are inaccessible after

assembly or erection. Change color of the second coat to distinguish it from the first.


B. Surface Preparation:

1. After inspection and before shipping, clean steel work to be painted. 2. Remove loose rust, loose mill scale, and spatter, slag, and flux deposits.

3. Clean and prepare the steel in accordance with the following specifications and standards:

a. SSPC – SP2: “Hand Tool Cleaning” b. SSPC – SP3: “Power Tool Cleaning,” where needed.

C. Priming:

1. Immediately after surface preparation, apply structural steel primer paint in accordance with the manufacturer’s written instruction and at a rate to provide a uniform dry film thickness of not less than 3.0 mils.

2. Use painting methods which will result in full coverage of joints, corners, edges, and exposed

surfaces.

D. Galvanizing:

1. Hot-Dip Galvanizing: Galvanize structural steel members conforming to ASTM A123. Provide minimum 2.0 oz/sq.ft. of galvanized coating.

2. Fill vent holes and grind smooth after galvanizing.

3. Exposed structural and miscellaneous steel not otherwise protected shall be galvanized.

3.7 PRODUCT DELIVERY, STORAGE, AND HANDLING

C. Load structural members in such a manner that they may be transported and unloaded without being excessively stressed, deformed, or otherwise damaged. This includes protection of coating from chipping and scratches.

D. Protect structural steel members and packaged materials from corrosion and deterioration. Material

shall be stored in a dry area and shall not be placed in direct contact with the ground. Do not place materials on the structure in a manner that might cause distortion or damage to the members or the supporting structures. Repair or replace damaged materials or structures as directed.

3.8 ERECTION

A. The CONTRACTOR shall comply with the AISC Specifications and Code of Standard Practice, and with specified requirements.

B. High-strength bolts shall be installed per the Specification for Structural Joints using ASTM A325 or

ASTM A490 and this section.

C. Anchor Bolts:

1. Provide as indicated on the Contract Drawings; anchor bolts and other connectors required for securing structural steel to foundation and other in-place work

2. Provide templates and other devices necessary for presetting bolts and other anchors to

accurate locations in concrete or masonry construction.

3. Contractor shall arrange and pay for all testing for anchor bolts or dowels as required by the Codes and Standards.

4. For dynamically loaded structures or where vibrations are being induced into the

structure/anchor bolts, provide structurally conforming lock nuts, structural nuts with lock


washers, or a chemical thread seizing compound, such as "Loctite" or equal, as approved b the ENGINEER.

D. Splices:

1. Splice members only where indicated, and with the approval of the ENGINEER. 2. For splices not indicated, submit structural calculations prepared and signed by a California

registered Civil or Structural Engineer.

E. Surveys:

1. Establish permanent benchmarks necessary for accurate erection of structural steel. 2. Check elevations of concrete surfaces, and locations of anchor bolts and similar items,

before erection proceeds.

F. Temporary Shoring:

1. Provide temporary shoring and bracing members with connections of sufficient strength to bear imposed loads.

2. Provide temporary guy lines to achieve proper alignments of the structure as erection

proceeds.

3. Remove temporary connections and members when permanent members are in place and the final connections have been made.

G. Not Used

3.9 SETTING BASES AND BEARING PLATES

A. Prior to the placement of non-shrink grout beneath base and bearing plates, the bottom surface of the plates shall be cleaned of all bond-reducing materials, and concrete and masonry bearing surfaces shall also be cleaned of all bond-reducing materials and roughened to improve bonding.

B. Set loose and attached base plates and bearing plates for structural members on wedges, leveling

nuts, or other adjustable devices.

C. Tighten the anchor bolts after the supported members have been positioned and plumbed.

D. Do not remove wedges or shims but, if they are protruding, cut off flush with the edge of the base or bearing plates to assure that no voids remain.

E. Grouting of base plates shall be done with non-shrink grout, of flowable consistency, as specified in

Section 03315 "Grout". Grouting shall be completed prior to placing loads on the structure. F. Finish exposed surfaces, protect installed materials, and allow grout to cure in strict compliance with

the manufacturers’ recommendations and acceptance requirements by the ENGINEER. 3.10 FIELD ASSEMBLY

A. Set structural frames accurately to the lines and elevations indicated. Align and adjust the various members to form a part of a complete frame or structure before permanently fastening. Clean the bearing surfaces and other surfaces which will be in permanent contact before assembly. Perform necessary adjustments to compensate for discrepancies in elevations and alignment.

B. Level and plumb individual members of the structure within specified AISC tolerances.

CONTRACTOR shall provide and install all temporary bracing necessary to carry construction loads until the structure has been completed.


C. Establish required leveling and plumbing measurements at the main operating temperature of the structure, making allowances for the difference between temperature at time of erection and the mean temperature at which the structure will be when completed and in service.

D. Comply with AISC Specifications and Code of Standard Practice for bearing, adequacy of temporary

connections, alignment, and the removal of paint on surfaces adjacent to welds. E. No driven nail or fastener, coreholes or other attachments shall be made or allowed on any steel

members without the written approval by the ENGINEER. 3.11 TESTING AND INSPECTION .

A. Quality Control is the responsibility of the CONTRACTOR for its forces and those of its Subcontractors. Schedule and coordinate with the INSPECTOR all necessary tests, special inspection, and overall general quality assurance inspection both in the shop and in the field.

B. Inspection by Others: Schedule and coordinate all necessary tests, inspections, and quality control

services with the authorities having jurisdiction, including the Department of Building and Safety and notify the INSPECTOR that such inspections are taking place.

3.12 MISFITS AT BOLTED CONNECTIONS

A. Where misfits in erection bolting are encountered, the CONTRACTOR shall immediately notify the ENGINEER. The CONTRACTOR shall submit a method to remedy the misfit for review by the ENGINEER. The ENGINEER will determine whether the remedy is acceptable or if the members must be refabricated. Methods of remedy for consideration by the ENGINEER may include, but are not limited to, the following:

1. Ream holes that must be enlarged to admit bolts and use oversized bolts.

2. Plug-weld misaligned holes and redrill holes to admit standard size bolts.

3. Drill additional holes in the connection, conforming with AISC Standards for bolt spacing and

end and edge distances, and add additional bolts.

4. Reject the improperly fabricated member and fabricate a new member to ensure proper fit.

B. Mis-sized or misaligned holes in members shall not be enlarged by burning or by the use of drift pins.

3.13 MISFITS AT ANCHOR BOLTS

A. Where misalignment between anchor bolts and bolt holes in steel members are encountered, the ENGINEER shall be immediately notified. The CONTRACTOR shall submit a method to remedy the misalignment for review by the ENGINEER.

3.14 GAS CUTTING

A. Do not use gas cutting torches in the field for correcting fabrication errors in the structural framing, except on secondary members which are not under stress and will be concealed in the finished structure and when approved by the ENGINEER. Finish gas-cut sections equal to a sheared appearance.

3.15 TOUCHUP PAINTING

A. Immediately after erection, clean field welds, bolted connections, and abraded areas of the shop paint primer. Apply touchup paint primer by brush or spray which is the same thickness and material as that used for the shop paint. Galvanized surfaces which have been field welded or damaged shall be repaired in accordance with Section 05500 "Miscellaneous Metalwork."


3.16 FIELD PAINTING

A. General:

1. Prepare surfaces in a manner appropriate to the condition, and as approved by the ENGINEER.

2. Clean spots and surfaces where primer coats have been removed, damaged, or burned off,

and clean field bolts and other field connections not concealed in the finished work. 3. Remove dirt, oil, and grease.

4. Apply a spot coat of the approved primer.

5. Do not apply paint to wet, damp, oily, or improperly prepared surfaces.

B. Notify the ENGINEER when the work of this Section is ready to receive field painting. Lapse time

between surface areas if necessary at no additional cost to the City. C. Schedule for inspection and secure approval from the ENGINEER prior to field painting.

D. Using spray or brush, as recommended by the manufacturer of the approved paint material, fill all

joints and corners and cover the surfaces with a smooth unbroken film of at least 1.5 dry mils thickness.

E. Apply two coats to all surfaces of steel which will be in accessible for painting, after fabrication and

erection.

* * * *


SECTION 13390 FIBERGLASS REINFORCED PLASTIC (FRP) DUCTS PART 1 -- GENERAL

1.1 THE REQUIREMENT

A. The CONTRACTOR shall furnish and install fabricated fiberglass ducts, fittings and flanges

complete and serviceable as shown and specified herein, all in accordance with the requirements of these Contract Documents.


A. Section 09800 Protective Coatings.

B. Section 15340 Hangers and Supports .

1.3 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS

A. Commercial Standards: ANSI B 18.22.1 Plain Washers. ANSI/AWWA F101 Contact-Molded, Fiberglass-Reinforced Plastic Wash Water

Troughs and Launders. ASTM A 193A Specification for Alloy-Steel and Stainless Steel Bolting

Materials for High-Temperature Service. ASTM A 194A Specification for Carbon and Alloy Steel Nuts for Bolts for

High-Pressure and High-Temperature Service. ASTM D 638 Test Method for Tensile Properties of Plastics. ASTM D 790 Test Methods for Flexural Properties of Unreinforced and

Reinforced Plastics and Electrical Insulating Materials. ASTM D 2240 Test Method for Rubber Property-Durometer Hardness. ASTM E 84-91A Surface Burning Characteristics. ASTM D 2583 Standard Test Method for Indentation Hardness of Rigid

Plastics by Means of a Barcol Impressor ASTM D 2584 Standard Test Method for Ignition loss of Cured reinforced

Resins ASTM D 2996 Specification for Filament-Wound Fiberglass (Glass-Fiber-

Reinforced Thermosetting-Resin) Pipe. ASTM D 2997 Specification for Centrifugally Cast Fiberglass (Glass-Fiber-

Reinforced Thermosetting-Resin) Pipe. ASTM D 3299 Specification for Filament-Wound Glass Fiber Reinforced

Thermoset Resin Chemical Resistant Tanks ASTM D 3982 Specification for Contact Molded Fiberglass (Glass Fiber

Reinforced Thermosetting Resin) Duct and Hoods. CIP-6171 FIBERGLASS REINFORCED PLASTIC (FRP) DUCTS DCTWRP - BLOWER AIR CLEAN-UP SYSTEM DIVISION 13 05/18/16 13390-1

NBS PS 15-69 Custom Contact-Molded Reinforced-Polyester Chemical-

Resistant Process Equipment. UL 181 Standard for Factory Made Air Ducts and Air Connectors.

1.4 CONTRACTOR SUBMITTALS

A. Submittals shall be made in accordance with the GENERAL REQUIREMENTS.

B. The following submittals and specific information shall be provided. 1. Shop Drawings: The CONTRACTOR shall furnish shop drawings of all fabricated items and

accessories in accordance with the requirements of the GENERAL REQUIREMENTS.

2. Certification: Any certification required by the CONTRACTOR, shall be determined by the ENGINEER.

3. Calculations: FRP duct calculations stamped by a licensed California Structural Engineer shall

be submitted indicating compliance with the duct design requirements of Part 2.2.C of this Specification. Calculations are required for design pressure, vacuum, temperature, expansion, contraction, and flexural stability.

4. Samples and test results: The CONTRACTOR shall furnish samples for testing and test

results prior to start of production manufacture.

5. Warranty: The CONTRACTOR shall provide equipment warranties and guarantees as

defined in the GENERAL REQUIREMENTS

1.5 QUALITY ASSURANCE

A. Quality assurance shall be in accordance with the provisions contained in SAMPLING, TESTING AND FABRICATION INSPECTION of the General Requirements.

PART 2 -- PRODUCTS

2.1 GENERAL REQUIREMENTS

A. Manufacturer's Experience: All items to be provided under this Section shall be furnished only by

manufacturers having experience in the manufacture of similar products, with a record of successful installations.

B. Quality: All fiber glass items shall be constructed of new, first-class, commercial-quality, fiber glass-fabric-reinforced, Vinyl Ester resin laminate material of the strength, thickness, and dimensions shown and specified herein, using the Filament Wound or Contact Molded method.

C. Finish: All finished surfaces of fiber glass items and fabrications shall be smooth, resin-rich, free of voids, and without dry spots, crazes, or un-reinforced areas, and shall provide for corrosion resistance and weathering. Outer surfaces shall be reasonably smooth and no glass fibers shall be exposed.

D. Supports and Fasteners: The CONTRACTOR shall provide all bolts, anchor bolts, nuts, washers, and supports as required for all the plastic and fiber glass items specified in this Section, in accordance with the requirements of the manufacturers of the plastic and fiber glass items. All bolts, anchor bolts, washers and supports required in connection with the plastic or fiber glass items provided under this Section shall be of Type 316 stainless steel.

CIP-6171 FIBERGLASS REINFORCED PLASTIC (FRP) DUCTS DCTWRP - BLOWER AIR CLEAN-UP SYSTEM DIVISION 13 05/18/16 13390-2

2.2 FIBERGLASS DUCT

A. Scope of Work

1. General: This specification covers fiberglass reinforced plastic ductwork to be furnished and installed where indicated on the drawings, or as required to provide complete, operable odor control/ventilation systems.

2. Material to Be Furnished: All straight duct, bends, tees, adaptors, closure plates, laterals,

transitions, flanges, and other fittings or specials shall be furnished as indicated on the drawings or as required to complete the work. Ductwork shall be installed complete with all joining materials and accessories, jacketing, duct supports, anchors and blocking, and other necessary appurtenances.

3. Application: The ductwork systems required hereunder shall be applied only to odor control

systems. Fiberglass duct shall not be used in any system where, as a normal operating condition, people will be exposed to air that passed through fiberglass duct.

B. General

1. CONTRACTOR'S Responsibility: The CONTRACTOR shall furnish all tools, equipment,

materials, and supplies and shall perform all labor required to complete all work as indicated on the drawings and specified herein.

2. Materials and Design: All fiberglass ducts shall be manufactured of material suitable for

contact with humid malodorous air and the chemicals used to treat odors shall be certified for such use on the shop drawings. Gas within the ductwork downstream of the scrubbers, if any, will also contain scrubbing solution carryover containing up to 25% sodium hydroxide and up to 15% sodium hypochlorite and possibly 10% HCL solution (used for scrubber cleaning). Duct shall be designed and checked for all loads to be incurred during service, including, but not limited to, wind, temperature stress and earthquake loads by a registered engineer experienced in fiberglass construction.

C. Design Requirements

1. Dimensional Control: Ductwork must be installed to fit between the structures that it serves.

The CONTRACTOR shall determine the actual dimensions of the ductwork from measurements made on the structures to which the ductwork shall be attached. The CONTRACTOR shall submit the actual dimensions of the ductwork on the shop drawings. The CONTRACTOR shall not allow any duct to be manufactured with dimensions taken from the design drawings.

2. Operating Conditions:

a. Internal Pressure, inches w.c. 27.72

b. Internal Vacuum, inches w.c. 27.72

c. Temperature, oF 40 - 120

3. Minimum Physical Properties: Structural laminate shall, in all cases, have the following

minimum physical properties, as required per NBS PS 15-69 Table I:

a. 1/8" to 3/16" laminate thickness

(1) Minimum Ultimate Tensile Strength ASTM D 638 9,000 psi

(2) Minimum Flexural Strength ASTM D 790 16,000 psi


(3) Minimum Flexural Modulus of Elasticity ASTM D 790 700,000 psi (tangent)

b. 1/4" laminate thickness



(3) Minimum Flexural Modulus of Elasticity ASTM D 790 800,000 psi

(tangent)

c. 5/16" laminate thickness



(3) Minimum Flexural Modulus of Elasticity ASTM D 790 900,000 psi (tangent)

d. 3/8" and up laminate thickness



(3) Minimum Flexural Modulus of Elasticity ASTM D 790 1,000,000 psi

(tangent)

4. Design Parameters:

a. Safety Factor: Round duct shall have a safety factor of 10 to 1 for pressure and 5 to 1 for vacuum service.

b. Ducting Deflection: The ductwork shall be designed to withstand all operating pressures

and vacuums, and to meet the requirements of paragraph 3.1H of these specifications. Additional supports shall be furnished by the Contractor at no extra cost.

(1) Maximum deflection of a side on a rectangular duct shall not exceed 2 percent of

the width of the side at a test vacuum pressure of 5-inch w.c. Maximum deflection of round duct shall not exceed 2 percent of the duct diameter under an imposed hoop (point) loading of 550 pounds.

(2) After installation, horizontal rectangular ducting shall not sag in excess of 2

percent of the shortest side as measured from a straight and true centerline of the duct to the actual midpoint of the installed duct. Similarly, maximum sag of horizontally installed round duct shall not exceed 2 percent of the diameter.

(3) Duct supports shall be designed and installed such that the maximum deflection

and sags specified are not exceeded. Internal ribs or other special construction shall be used, if support components of the ductwork shall not increase the system pressure drop.

(4) See paragraph 2.2.E.1.c for additional allowable deflection requirements.

c. Longitudinal Load: Duct design shall include longitudinal loads. Duct design shall have a

10 to 1 safety factor for longitudinal loading. The design longitudinal load for duct shall be the greater of the following:


(1) The longitudinal load developed by an internal pressure of twice the operating

condition for internal pressure specified in paragraph 2.2, C, 2, a, above, acting on a section of duct capped by a pressure tight bulkhead at each end.

(2) The longitudinal load imposed at the center of a section of duct between two duct

supports, separated by the manufacturer's recommended center to center support distance, by the moment on the duct caused by the weight of the duct and the weight of the duct insulation and jacketing, if applicable. For purposes of calculating the moment, the duct shall be considered to act as a simple beam supported at its ends by the duct hangers

d. Encasement Load: Where round duct is used for direct buried service it shall be

encased, and a 5 to 1 safety factor shall be used for design of the encased duct to with stand the wet concrete load. The design calculations shall be made with the assumption that the encasement is done as a monolithic pour. Rectangular duct shall not be used for encased buried service.

e. Heat Resistivity: Duct shall not exceed a flame spread index of 25 and smoke develop

rating of 50 when tested in accordance with ASTM E 84-Tunnel Test.

f. Gas within the ductwork downstream of the scrubbers, if any, will also contain scrubbing solution carryover containing up to 25% sodium hydroxide and up to 15% sodium hypochlorite and possibly 10% HCL solution (used for scrubber cleaning).

D. Materials of Construction

1. Resin: Resin shall be selected to be compatible with the gas and liquid passing through the

duct, as specified in Section 2.2(B).2 of the specifications. The resin should be a premium corrosion resistant, fire retardant vinyl ester resin such as Ashland Chemical Hetron FR 992, Dow Chemical Derakane 510-A or approved equal. The fire retardant resin shall contain minimum of 3% antimony trioxide (or more if recommended by the resin manufacturer) in the structural wall to achieve the designated low flame spread index requirement. Do not use any antimony trioxide in the corrosion resistant layer, unless recommended by the manufacturer. The minimum elongation of the resin shall be as large as possible, consistent with corrosion resistance to the duct's intended service and the maximum duct operating temperature. To insure that fresh resin is used, at the completion of the job, lot numbers of the resin used must be shipped with the completed duct. Fillers up to 2 percent by weight of thixotropic agent may be used for viscosity control in the paraffinated top coat, provided it will not interfere with visual inspection. The cure system used for the resin shall be in accordance with the resin manufacturer's current recommendations. Proper curing of the resin is the fabricator's responsibility. All duct and duct appurtenances fabricated in this specification shall be cured to at least 90 percent of the minimum Barcol hardness specified by the resin manufacturer. The requirement applies to both interior and exterior surfaces. A separately cured, unreinforced gel coat shall not be used. No chemical-resistant surface, interior or exterior, shall be acetone sensitive. Where application of polyester film to prevent air inhibition of these surfaces is impractical, a wax containing resin coating formulated according to the resin manufacturer's most recent recommendations, must be used. The minimum thickness of the polyester film shall be 4 mils. The outside surface of ducts shall not be pigmented. By weight, 5 percent ultraviolet stabilizer shall be added to all exterior surfaces.

2. Reinforcement: The Chemical surfacing mat (veil) for each duct shall be Type C (chemical)

glass, 10 mils thick, with a silane finish and a binder compatible with the lay-up resin, or Nexus veil (polyester); dependent on which material shall provide superior corrosion resistance to the materials specified to be conveyed in the duct. C-Glass shall be a chemically resistant glass conforming to the specifications of ASTM D 3299 paragraph 5.2. Chopped strand mat shall be Type E (electrical borosilicate) glass, 1-1/2 oz per sq ft, with silane finish and a styrene-soluble reactive binder. Continuous roving used in chopper gun for spray-up shall be Type E glass. Woven roving shall be Type E glass, nominal 24 oz/sq yd, 4 by 5 weave, with silane-type finish.


Continuous roving used for filament winding shall be Type E glass with a silane type finish.

3. Coating: The coating materials shall be as specified in Section 09800 "Protective Coatings," System 12 - Aliphatic Polyurethane, Fiberglass.

4. Nuts: Hex nuts shall be 18-8 stainless steel and shall conform to ASTM A 194, AISI Type

316SS, ANSI B18.2.2 specifications.

5. Bolts: Hex head bolts shall be used for ductwork fastening. The bolts shall be 18-8 stainless steel and shall conform to ASTM A 193, AISI Type 316SS, ANSI B18.2.2 specifications.

6. Washers: Flat washers shall be 18-8 stainless steel and shall conform to ANSI B 18.22.1 flat,

Type 316SS specifications.

7. Flange Gaskets: Flange gaskets shall be full face and shall have a minimum thickness of 3/16 inch. The gaskets shall have a Shore A durometer hardness in the range of 40-70, when tested by the procedures of ASTM D 2240. Gasket material shall be EPDM or Hypalon.

8. Expansion Joints:

a. Range of Motion and Force: Expansion Joints shall be capable of a range of expansion,

contraction and lateral movement of 1 inch minimum under a maximum deflection force of less than 100 pounds.

b. Joint Type: Expansion joints shall be arch style elastomer joints. The application of joint

type to duct shall be as follows:

(1) Round Duct: Expansion joints for round duct shall be either flange type or slip-on sleeve type.

(2) Rectangular Duct: Expansion joints for rectangular duct shall be flange type only.

c. Joint Connections:

(1) Flange Joints: The flanges of flange type expansion joints shall conform

dimensionally to NBS PS 15-69.

(2) Flange Joints Spacing: Expansion joints shall be furnished and installed at the locations indicated on the PD mechanical design drawings or as indicated in the Table below:

Duct Size (in)

Duct Support Spacing (Feet)

Maximum Run without Exp. Loop or Bend (Feet)

Expansion Joint Maximum Spacing (Feet)

6 8 10 >12

14 15 17.5 18

40 40 40 40

100 100 100 100

(3) Sleeve Joints: The dimensions of sleeve type joints shall be such that a gas tight

joint can be made with a worm type adjustable stainless steel band holding the sleeve to the duct O.D.


(4) Expansion Joints ( SP-1 ): Expansion joints as shown on the PD mechanical

design drawings shall be as follows: (a) Sizes, diameter 6” – 30” Design arch type with integral flanges and with a min of

one ply of reinforced fabric vulcanized into a homogeneous product

Material Hypalon Design pressure +/- 2 psi Design temperature 225 deg F Length, face to face 9” Axial compression 2.75” Axial extension 1.5” Lateral offset 1.5” Manufacturer/ Model PROCO Style 530-HH, or equal (b) Sizes, diameter 32” – 72” Design arch type with integral flanges and with a min of

one ply of reinforced fabric vulcanized into a homogeneous product

Material Hypalon Design pressure +/- 2 psi Design temperature 225 deg F Length, face to face 12” Axial compression 3.5” Axial extension 2.0” Lateral offset 2.0” Manufacturer/ Model PROCO Style 530-HH, or equal

d. Joint Material: The expansion joint elastomer shall be resistant to the ultraviolet

component of sunlight. The elastomer surface of the joint that is in contact with the gas stream in the duct shall be Fabric Reinforced Hypalon.

e. Coating: All ferrous metal portions of expansion joints shall be coated per the

specifications of Section 09800 "Protective Coatings," System 106, Fusion Bonded Epoxy.

f. Manufacturers:

(1) PROCO Products, Inc. (2) Mercer Rubber Company

(3) Ashland Chemical Hetron FR 992

(4) Dow Chemical Derakane 510-A

(5) Or equal.

9. Acoustic Insulation and Jacketing shall be provided as shown on the drawings.

a. Insulating material:

(1) The insulating material shall be manufactured either from fiberglass or mineral

wool. The thickness of the insulation shall be 2 inches and shall have a maximum density of 5 pounds per cubic foot. The insulation shall be supplied in formed sections of any length and width.


(2) The insulating material shall have the following minimum sonic adsorption coefficient:

Frequency Band 125 250 500 1000 2000 4000 Absorption Coefficient 0.18 0.70 0.95 0.99 0.99 0.99

b. Protective Jacket:

(1) Jacketing shall be either smooth aluminum weatherproof metal or plastic

preformed jacketing with a factory-attached moisture barrier. Minimum thickness should be 0.03 inch (22 gauge).

(2) The jacket for the fittings shall consist of precision-formed smooth-sided sections

and shall be sized to cover and protect the insulated fitting. Jackets shall be attached using 1/2 inch self-taping screw of stainless steel or 6061-T6 aluminum. The screw shall be furnished with neoprene washers.

(3) All joints shall be lapped a minimum of 3 inch and, wherever possible, so placed

that they are obscured from normal points of vision. Joints shall be placed so that they shed water. All joints shall have suitable provision for expansion movement.

(4) Butt joints in aluminum jackets shall be made using a rolled seam. Exposed ends

of duct insulation shall be provided with flat covers attached by a rolled seam.

(5) Elbows shall be jacketed using spiral-wrapped aluminum strips or individual mitered segment gores cut to fit the insulation shape applied in either instance over a continuous freshly applied coating of aluminum pigment mastic.

(6) Joints or openings in exterior jackets which can not be effectively sealed from

entry of moisture by flashing or laps shall be weatherproof by application of an aluminum pigment mastic.

c. Manufacturers:

(1) Johns Manville;

(2) Or equal.

E. Duct Construction

1. General:

a. Order of Construction: The duct shall consist of an inner surface and an interior layer,

together referred to herein as the Chemical Resistance Barrier, a structural layer, which together with the Chemical Resistance Barrier shall be referred to herein as the Laminate Construction, and an exterior coating.

b. Structural Layer Dimensions: The structural layer shall be fabricated using either hand layup construction per NBS PS 15-69, or shall be filament wound. In no case shall the structural layer be less than the following thicknesses:


Duct inside diameter or Thickness Length of shorter side.

inch inch

< 20 1/8 20-28 3/16 30-58 1/4 60-88 5/16 90-118 3/8 120-144 7/16

c. The structural layer thickness must also meet the requirements of SMACNA for FRP duct allowable deflection ; namely, ¾” or L / 120, whichever is smaller. d. Note that design drawing PD-1 shows two 60” diameter duct lengths with support spans

of 59’ and 68’ respectively; these duct lengths must meet the SMACNA requirements for structural layer thickness.

2. Laminate Construction: Laminate construction shall be as follows:

a. Chemical Resistant Barrier: Ducts, whether they are constructed using the filament

winding or contact molded process, shall consist of an inner surface and an interior layer which constitutes the chemical-resistant barrier, and an exterior or structural layer. The inner surface shall be free from cracks and crazing and have a smooth finish. The resin-rich surface shall be between 0.010 and 0.020 inches and reinforced with C-glass or with Nexus veil, as required by the intended service of the duct. The resin to glass ratio should be approximately 90 percent resin and 10 percent glass. The interior layer shall consist of either (1)-3 layers of 1-1/2 oz/sq ft E-glass chopped strand mat, or (2)-2 layers of 1-1/2 oz/sq ft E-glass chopped strand mat followed by one pass by the spray-up process. For interior duct the final coat shall be an acceptable intumescent coating to achieve the designated results for low smoke development. The intumescent coating shall be factory applied. In no case shall the combined thickness of the inner surface and the interior layer be less than 0.100 inches. The glass content for the interior layer shall be 22-32 percent.

b. Contact Molded Laminates: The contact molded process includes fabrication by the hand lay-up, contact pressure molding, and spray processes or combinations thereof, according to NBS PS 15-69, except as otherwise noted. In addition, inner surface and interior layer shall be constructed as specified in the preceding paragraph. The exterior layer or body of the laminate shall provide the additional strength necessary to meet the tensile and flexural requirements. Where separate layers such as mat, unidirectional tape or woven roving are used, all layers shall be lapped a minimum of one inch (two inches for woven roving). Laps shall be staggered as much as possible. Use one layer of woven roving every 3/16” thickness for bidirectional strength. If woven roving or unidirectional tape is used, a layer of chopped strand glass shall be placed as alternate layer. The exterior surface shall be relatively smooth with no exposed fibers or sharp projections. On laminates containing woven roving, cut edges exposed to the chemical environment shall be coated with resin, surfacing mat, and C-glass or Nexus veil.

c. Filament-Wound Laminates: Duct shall be according to NBS PS 15-69, unless otherwise noted. In addition, inner-surface and interior layer shall be constructed as specified above. The exterior or structural layer of filament-wound duct may include chopped glass strand interspersed between the windings or unidirectional tape to provide the required tensile and flexural strength, and resistance to permeation and chemical attack. The exterior surface shall be relatively smooth with no exposed fibers or sharp projections.


d. Exterior Surface: (1) When air-inhibited resins are cured with an air- exposed surface, a wax-containing

resin coating, formulated according to the resin manufacturer's most recent recommendations, must be used.

(2) The exterior coat shall be resin rich with no exposed raw fibers. The final coat shall be an acceptable resin with ultraviolet (UV) inhibitor or a suitable paint resistant to UV attack of the surface. All ducts, fittings, and appurtenances shall contain UV inhibitors.

3. Fittings:

a. General: The Chemical Resistance Barrier of fittings shall be constructed from the same materials as the parent duct and comply with NBS PS-15-69 specifications.

b. Tolerance: Tolerance on angles shall be +/- 1o through duct diameters up to 24 inch, +/-

7/8o for 30 inch, +/- 5/8o for 42 inch, and +/- 1/2o for 48 inch and above.

c. Elbow Radius: Elbows shall have a centerline radius of one and one half times the duct diameter, unless otherwise shown.

d. Laterals: Laterals shall branch at 450 unless otherwise shown.

e. Reducers: Reducer length shall be at least five times the difference in diameters, unless

otherwise shown.

f. Transitions: Transitions between round duct and rectangular duct or openings shall be designed to conform to the design criteria for rectangular duct that are contained in this specification.

4. Flanges:

a. General: The Chemical Resistance Barrier of flanges shall be constructed from the

same materials as the parent duct and shall comply with NBS PS-15-69 specifications.

b. Flange Attachment: Duct wall at the hub of the flange shall be at least one and one half times the normal thickness and shall taper to normal thickness over a distance of at least one flange width. The fillet radius at the point where the hub meets the back of the flange shall be at least 3/8 inch.

c. Face of Flange: The face of the flange shall have no projections or depressions greater

than 1/32 inch and will be perpendicular to the centerline of the duct within 1/2 degree. A camber of 1/8 inch with respect to the centerline, measured at the O.D. of the flange, shall be allowable. The Chemical Resistance Barrier construction shall be bonded to the surface of the duct for a distance of at least six inches beyond the duct to flange bond and carried without seam over the entire face of the flange.

d. Flange Thickness: The flange manufacturer shall calculate the flange thickness to

accommodate the service conditions of the duct. In no case shall the flange thickness be less than the values shown in the following table:


Duct diameter or Flange Thickness Length of shorter side.

inch inch

2-8 1/4 10-14 3/8 16-36 1/2 42-60 5/8 66-144 3/4

e. Drilling: Flanges shall be shipped un-drilled per industry standards. The flange diameter and drilling pattern shall conform to the following:

(1) Round Flanges: NBS PS 15-69 for duct size up to 60 inch, ANSI/ASME B 16.1

Class 25 for larger sizes.

(2) Rectangular Flanges: Flange width and bolt spacing corresponding to NBS PS 15-69 for the diameters corresponding to the longer sides for duct up to 60 inches on the longer side, ANSI/ASME B 16.1 Class 25 for larger sizes.

5. Workmanship:

a. Visual Defects: ASTM D2583 shall be used for quality control of both filament-wound and hand lay-up construction.

b. Shop Inspection: The ENGINEER and the INSPECTOR shall be permitted access to the

plant area at all times during fabrication. The shop inspection of the equipment shall include the following:

(1) Check for compliance with approved shop drawings and adherence to contract

specifications and construction standards (ASTM etc.).

(2) An acetone wipe test to check surface cure. No surface tackiness is permitted.

(3) A Barcol hardness test; at least 90 percent of manufacturer's specified hardness must be attained.

6. Shop Coating: The surface of fiberglass ducts deteriorates rapidly in terms of its ability to bond

with protective coatings after exposure to air. Thus, it is desirable to have the duct coated in the shop before it is shipped to the job site and as soon as possible after it is cured and the cure coating has been removed from the exterior of the duct.

Ducts shall be coated as specified in Section 09800 "Protective Coating" of these specifications.

Prior to coating, Shop Inspection shall be performed. When the duct conforms to the specifications of the shop inspection, it shall be coated as soon as possible after said inspection. Before coating, the surface of the duct shall be prepared as is specified in Section 09800, paragraph 3.8. The coating shall consist of the primer coat specified in Section 09800.

7. Identification: The name of the duct manufacturer shall appear on the outside of the duct.

8. Manufacturers:

a. Daniel Mechanical Co. ;


b. Paramount Fabricators;

c. DEI Systems ;

d. Or Equal.

PART 3 -- EXECUTION 3.1 FIBERGLASS DUCT INSTALLATION

A. General: The CONTRACTOR shall install all ductwork and shall furnish all duct hangers, expansion joints, fittings, acoustic insulation and jacketing, if applicable, and all other appurtenances required for a complete and operable ductwork system.

B. Service conditions:

1. Ductwork may be installed inside structures, outside structures above ground or may be buried.

All buried duct shall be encased in concrete or shall be placed inside a pipe chase. The pipe chase or encasement shall be designed for AASHTO H-20 surface loading. The minimum thickness of concrete encasement shall be six inches.

2. Ductwork shall be free from vibration when in operation. All necessary vibration isolation

devices shall be provided and installed, as needed, by the contractor.

C. Appurtenances:

1. Duct Hangers: Duct Hangers shall conform to the provisions of Section 15020, Pipe Supports, with the single exception that the duct manufacturer shall recommend the duct hanger spacing. Supports and Hangers to be painted in accordance to Section 09800 "Protective Coatings."

2. Expansion Joints: Expansion joints shall be furnished and installed at the locations shown on

the drawings and at other locations required for proper duct installation.

3. Transitions: Transition sections shall be furnished for connecting round duct to rectangular duct or rectangular openings as required.

4. Flanged Joints: Flanged joints shall be provided at each connection to equipment, at each

change of material and where indicated on the drawings.

5. Hardware: All fastening hardware, including but not necessary limited to, nuts, bolts, washers, screws, and bands shall be 316 stainless steel.

6. Acoustic Insulation and Jacketing: Acoustic insulation and jacketing shall be provided and

installed where shown on the drawings.

7. Taps: Three (3) - each 3-inch diameter fiberglass taps with threaded cups shall be installed at locations as designated by the ENGINEER for the purpose of measuring air flow and collecting air samples.

D. Installation:

1. Drain Connections: Where possible, horizontal sections of duct shall be installed with a

continuous slope of 1/2 %, sloping downward in the direction of gas flow, so that any condensation in the duct can discharge into the structure, or equipment, where the duct terminates. If a break in grade of a transition to a vertical duct is required, a one inch flanged fiberglass nozzle shall be provided at the low point of the duct. A one inch PVC union type PVC ball valve shall be bolted to the nozzle and the valve shall be plumbed with one inch schedule 80 PVC pipe to carry the drainage to a floor drain or yard drain, which shall be connected to the plant drain system.


2. Duct Joints: Joints between adjacent sections of duct that are not flange joints, shall be either

butt joints or bell and spigot joints. a. Butt Joints:

(1) Permitted Use: Butt joints shall be made only in duct that is large enough to allow

an installer to place fiberglass on the interior surface of the joint. Duct smaller than 24 inches shall not have field butt joints, and shall comply with NBS PS-15 specifications.

(2) Methods: Butt joints shall be made in accordance with the manufacturer's recommended procedures and as specified herein. Joints shall be overlaid both inside and outside. The outside overlay shall provide the structural strength of the joint, the inside overlay shall provide the Chemical Resistance Barrier of the joint. The width of the overlay shall be as shown in the following table: Duct Size Minimum Total Width of Overlay inch inch 24-36 18 42-54 24 60-144 26

(3) The structural overlay shall be built up in layers. The first overlay shall have a width of four inches and shall be centered on the butt joint. Successive overlays shall increase in width uniformly to the specified minimum total width of the joint. The structural overlay shall have physical properties at least equal to those of the parent duct and the structural strength of the butt joint shall be equal to that of the duct. Any gap between the duct ends shall be filled with resin so that the surface is flush with the duct interior. After the interior of the butt joint is smooth and flush, a Chemical Resistance Barrier shall be applied to the interior of the butt joint, at the CONTRACTORS expense. The Chemical Resistance Barrier shall be centered on the butt joint and shall be as wide as the structural overlay. It shall be made of the same materials as the Chemical Resistance Barrier of the parent duct.

b. Bell and Spigot Joints: Bell and spigot joints shall be made in accordance with the

manufacturer's recommended procedures and as specified herein. The gap on the interior of the joint shall be filled and a Chemical Resistance Barrier shall be applied to the joint as specified for butt joints above.

c. Joint Fabricator Training: All field butt and bell and spigot joints shall be made by the

duct manufacturer or by employees of the CONTRACTOR who have been trained and certified by the duct manufacturer. The duct manufacturer shall provide hands-on training for the CONTRACTOR'S employees in the proper assembly of these joints and shall provide training for the CITY'S inspectors in the proper inspection procedures for those joints. The CONTRACTOR shall provide, at its own expense, an authorized representative of the duct manufacturer on site for at least one 8-hour day to observe assembly of at least three butt joints. The duct manufacturer shall provide the ENGINEER with written certification that the training has been done.

d. Flange joints:

(1) Application: Flange joints may be made in any size duct.

(2) Drilling: Flange bolt hole patterns shall be drilled as specified herein. Bolt holes

shall straddle the flange centerline. The cut glass ends in the bolt holes shall be coated with resin. The resin coating on field drilled bolt holes shall be allowed to cure before flanged joints are made up. Cure time shall suit field conditions and


shall be at least two hours in any case.

(3) Gaskets: Flange joints shall be made with full face gaskets. Gasket material shall be as specified herein.

(4) Bolting: Bolting materials shall be as specified herein. Anti-seize compound shall

be applied to all bolts. Care shall be taken in applying torque to flange bolts, only enough torque shall be used to slightly compress the gasket. The duct flanges shall not be distorted by bolt torque. Flat washers shall be used under each nut and bolt head.

E. Alignment: Ductwork shall be laid to the lines and grades indicated on the drawings. Batter boards,

laser beams equipment, or surveying instruments shall be used to maintain alignment and grade.

1. Batter boards, if used, shall be erected at intervals of not more than 25 feet. Batter boards shall be used to determine and check duct sub-grades. At least three batter boards shall be maintained in proper position at all times when trench grading is in progress.

2. If laser beam equipment is used, periodic elevation measurement shall be made with

surveying instruments to verify accuracy of grades. If such measurements indicate thermal deflection of laser beam due to differences between the ground temperature and the air temperature within the duct, precaution shall be taken to prevent or minimize further thermal deflection.

F. Laying of Ducts: Duct laid underground shall be protected from lateral displacement by placing the

specified duct embedded material. Duct shall not be laid in water or under unsuitable weather or trench conditions. The duct shall be anchored and supported per manufacturer's recommendations and as indicated on the drawings. Anchors shall be placed not more than 5 linear feet apart.

1. Whenever duct laying is stopped, the open end of the duct shall be closed with an end

board closely fitting the end of the duct, to keep sand and earth out of duct. The end board shall have several small holes near the center to permit water to enter the duct and to prevent floatation in the event of flooding of the trench.

G. Duct Cleaning: Odor control air duct shall be cleaned using the system fans. The duct being cleaned

shall be purged continuously for not less than 48 hours at a flow rate not less than the design flow rate for that duct section. If required, the system fans shall be throttled on the inlet side to prevent motor overload. A temporary screen shall be installed in the fan suction duct to protect the fans from damage due to debris within the duct.Process equipment downstream of the fans shall be disconnected during the cleaning procedure.

H. Duct Testing: Testing shall be performed in a manner acceptable to the ENGINEER. At least two

weeks prior to the proposed testing date, the CONTRACTOR shall notify the ENGINEER of the testing date and shall submit a report from the equipment manufacturer detailing the proposed performance testing and analysis. Only a detailed leakage visual inspection of all joints and ducts will be required.

1. Leak Testing and Pressure Testing: Leak Testing and Pressure Testing will not be required

unless a visual inspection indicates a need to do so as determined by the ENGINEER

2. Duct Air Flow Balancing: After installation and leakage visual inspection, the air dampers in flow regulation service shall be adjusted to provide the air quantities indicated on the drawings. It must have proper holes drilled in duct to measure air flow.

a. The CONTRACTOR shall submit copies of air balancing report indicating velocity and/or

flow measurement at each flow regulating damper and operating fan. The submission of the reports shall be consistent with the requirements of GENERAL CONDITIONS. ( END OF SECTION)


SECTION 13445 BIOTRICKLING FILTER ODOR CONTROL SYSTEM

PART 1 -- GENERAL 1.1 THE REQUIREMENT

A. The CONTRACTOR shall furnish and install a Bio-trickling Filter (BTF) odor control system, complete and operable, in accordance with the requirements of the Contract Documents and Design Drawings. The system shall include (1) ONE BTF concrete structure with three (3) layers of media and required sub-systems, (2) two exhaust fans, (1) one mist eliminator, (2) two degreasers, support assembly, associated ductwork, instrumentation, controls and accessories.

B. The CONTRACTOR shall demolish the existing FA ducts and equipment in accordance with the

requirements of the contract documents.

C. The CONTRACTOR shall provide a temporary by-pass FRP FA duct line, complete and operable, to be used during construction of the new bio-trickling Filter (BTF) odor control system in accordance with the requirements of the contract documents.


A. Section 09800, Protective Coating.

B. Section 13380, Odor Control Dampers and Valves

C. Section 13390, Fiberglass Reinforced Plastic Ducts

D. Section 16010, Electrical General Provisions

E. Section 17400, Process Instrumentation and Controls. 1.3 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS

A. Comply with the reference specifications of the GENERAL REQUIREMENTS.

B. Comply with the current provisions of the following codes and standards.

1. National Bureau of Standards: NBS PS 15-69 Custom Contact-Molded Reinforced Polyester Chemical-

Resistant Process Equipment.

2. Commercial Standards:

ANSI B 16.5 Pipe Flanges and Flanged Fittings

ASTM A 325 Specification for High-Strength Bolts for Structural Steel Joints.

ASTM A 490 Specification for Heat-Treated Steel Structural Bolts 150

ksi (1035 MPa) Tensile Strength. ASTM C 581 Practice For Determining Chemical Resistance of

Thermosetting Resins Used in Glass Fiber Reinforced Structures, Intended for Liquid Service.

CIP-6171 BIOTRICKLING FILTER ODOR CONTROL SYSTEM DCT BLOWER FOUL AIR CLEAN-UP SYSTEM DIVISION 13 5/18/16 13445-1

ASTM C 582 Contact-Molded Duct

ASTM D 638 Test Method for Tensile Properties of Plastics.

ASTM D 695 Test Method for Compressive Properties of Rigid Plastics.

ASTM D 790 Test Methods for Flexural Properties of Unreinforced and

Reinforced Plastics and Electrical Insulating Materials.

ASTM D 883 Definitions of Terms Relating to Plastics.

ASTM D 2563 Recommended Practice for Classifying Visual Defects in Glass-Reinforced Plastic Laminate Parts.

ASTM D 2583 Test Method for Indentation Hardness of Rigid Plastics

by Means of a Barcol Impressor.

ASTM D 2584 Test Method for Ignition Loss of Cured Reinforced Resins.

ASTM D 2866 Total Ash Content of Activated Carbon ASTM D 2867 Moisture in Activated Carbon

ASTM D 3299 Specification for Filament-Wound Glass Fiber

Reinforced Thermoset Resin Chemical-Resistant Tanks. ASTM RTP - 1 Reinforced Thermoset Plastic Corrosion Resistant Equipment

ASTM D 3467 Test Method for Carbon Tetrachloride Activity of

Activated Carbon.

ASTM D 4097 Standard Specification for Contact-Molded Glass-Fiber-Reinforced Thermoset Resin Chemical-Resistant Tanks

AISC Specification for the Design, Fabrication, and Erection of

Structural Steel for Buildings.

NFPA 255 Method of Test for Surface Burning Characteristics of Building Materials.

ANSI/AWS D1.1 Structural Welding Code – Steel 3. Codes

UBC Uniform Building Code, International Conference of

Building Officials LABC Los Angeles Building Code

4. Design References

“Seismic Design for Buildings, TM 5-809-10, NAVAC P-355, AFM 88-3”; Chapter 13, by Department of Army, Navy and Air Force, 1982. “API #650; Appendix E, Welded Steel Tanks for Storage


C. When two or more of the above regulations are applicable, the more stringent requirement shall

be met. 1.4 CONTRACTOR SUBMITTALS

A. Submittals shall be made in accordance with the GENERAL REQUIREMENTS.

B. Catalog Data: Catalog data for each component shall include, but not be limited, to the following: performance and equipment specifications, installation instructions, operating literature, performance data and calibration curves. This data is required for BTF media, FA fans, degreasers and demisters, recirculation pumps, nutrient dosing pump, electric motors, dampers and valves

C. Shop Drawings: The CONTRACTOR shall submit complete Shop Drawings of all the Biotrickling Filter (BTF) odor control equipment as a complete system, according to the general requirements. Included in the shop drawing submittals shall be complete data of the BTF media as specified herein.

D. Each lot of BTF media delivered to the jobsite shall be accompanied by an analysis sheet of the measured characteristics of the BTF media in that lot. Ten random samples of each BTF media delivery will be selected by the INSPECTOR for future testing, as required by the ENGINEER, to insure product quality. Testing may be made by any testing laboratory acceptable to the ENGINEER. The ENGINEER shall pay for all costs associated with this testing.

E. O & M Manuals: The CONTRACTOR shall furnish to the ENGINEER 5 identical copies of

complete operation and maintenance instructions for each of the major components of the entire BTF odor control system as specified under TECHNICAL MANUALS of the General Requirements.

F. Tools and Spare Parts: The CONTRACTOR shall supply one complete set of special wrenches or

other special tools necessary for the assembly, adjustment, and dismantling of the equipment. All tools shall be of best quality and furnished in labeled metal toolboxes.

1.5 QUALITY ASSURANCE

A. After field installation is complete, all FRP vessels and ducts must be smoke-tested at a pressure of one psi and held for a minimum of one-hour, with no visible signs of leaks or excessive wall deflection. The ENGINEER reserves the right to be present at the fabricator’s facility during testing.

B. Upon completion of the installation, each piece of equipment and each system shall be tested for

satisfactory operation without excessive noise, vibration, overheating, etc. All equipment must be adjusted and checked, for misalignment, clearances, supports, and adherence to safety standards.

C. TESTING PROCEDURE: In accordance with General Requirements Specification Section 01453, Sampling, Testing, and Fabrication Inspection, Paragraph 8.4 and 8.9.b, THE CONTRACTOR shall submit a testing procedure for all FUNCTIONAL TESTING of major components of the system, including the media, irrigation system, nozzles, electrical cabinets, pumps, valves, and auxiliary equipment.

D. FIELD QUALITY CONTROL. Field quality control shall be as follows:

A. Installation:


1. Installation procedures shall comply with THE VENDOR instructions and recommendations.

2. THE VENDOR representative(s) shall be present on site during the installation period to supervise and advise THE CONTRACTOR on the installation of the equipment.

3. THE VENDOR's representative(s) shall review the installation of all related process equipment and shall notify THE CONTRACTOR immediately of any installation deficiencies, conflicts, or conditions detrimental to the operation of the equipment.

B. THE VENDOR shall submit Commissioning Report including the following:

1. List and recommend corrective action for all deficiencies found.

2. Field-testing reports and certification by THE VENDOR representative that items are properly installed and tested.

E. FUNCTIONAL TEST: The functioning of the system shall be verified by a functional test for five

consecutive days, 24 hours per day. This test shall verify to the satisfaction of the ENGINEER that all systems are operating properly as designed.

F. PERFORMANCE TEST: After the functional test is accepted by the ENGINEER, the performance of

the system shall be verified by a performance test. This test shall be conducted by the CITY ENGINEER.

G. Guarantee: The media manufacturer shall guarantee the integrity and performance of the reactor media of the BTF for 10 years.

1.6 MANUFACTURER'S SERVICE REPRESENTATIVE

A. INSPECTION: The CONTRACTOR shall provide the services of a trained, qualified representative of the equipment manufacturer for each piece of equipment for at least one day after units are put in proper working order, or as otherwise specified, for the purpose of inspecting the installation and instructing the CITY's operating personnel.

B. The CONTRACTOR shall provide for the startup of each odor control system to be accomplished

under the supervision of an experienced startup engineer from the manufacturer/supplier. Said startup engineer shall be at the jobsite for a minimum of five working days to inspect the installation of each system, and direct the startup of each system. The CONTRACTOR shall have the startup engineer provide written certification that each system is correctly installed, with all specified and required components, and that each is capable of meeting the specified performance requirements. This written certification shall be submitted to the ENGINEER prior to the startup of any system.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Delivery, storage, and handling requirements for equipment and accessories shall be as specified

in the General Requirements.

B. In addition to the protection specified in the General Requirements, the packaging of spare units and spare parts shall be similar to export packing and shall be suitable for long term storage in a damp location. Each spare item shall be packed separately and shall be completely identified on the outside of the container.

C. Instructions for the servicing of equipment while in long term storage shall accompany each item of equipment. Advisement of enclosed instructions with each package shall be noted on the exterior of the package.


1.8 CLEANUP

A. After completion of testing the CONTRACTOR shall remove all debris and spilt media from the site and clean the entire system to render it ready for startup.

PART 2 -- PRODUCTS 2.1 GENERAL

A. Process Description:

2,700 / 11,000 ( min / max ) cfm odorous foul air shall be drawn from the Primary Tanks through mesh type Degreaser #1.

25,300 cfm odorous foul air shall be drawn from the screw pump wet wells ( 4,000 cfm ), bar screens ( 14,000 cfm ) and channels # 1 & 2 ( 7,300 cfm ) through mesh type Degreaser #2..

A total of 28,000 / 36,300 ( min / max ) cfm odorous foul air shall be drawn from the Primary Tanks / screw pump wet wells / bar screens / channels Into the BTF. The treated FA will then flow into the mesh Demister and finally into the FA exhaust fans.

There will be (2) two Stainless Steel exhaust fans ( one duty and one standby). They will be installed on a concrete pad adjacent to the BTF. Each fan shall be rated for 28,000 / 36,300 ( min / max ) cfm. One (1) fan will run continuously during normal operation and one (1) fan will be on standby. The discharge of the fans will be connected to the existing inlet plenum of the new NdeN FA blowers. The BTF unit shall consist of a bio-reactor concrete structure containing three (3) layers of media, each 5’-3” high, configured to eliminate short-circuiting of the air stream and provide intimate contact between the foul air to be treated and the biological media. The operation of each fan will be done locally and manually by the operator. The Area Classification for the fan location is Class I, Div. 2 per NFPA 820, Table 4.2, Row 20, for “D” ventilation. Fan construction shall be spark proof construction type with corrosion resistant coating on the blades.

A flow indicator transmitter shall be installed at the fan inlet header to register the total air flow passing through the BTF and to adjust the flow control valve at the inlet of degreaser No.1 to control the flow rate through the BTF from a minimum of 28,000 cfm to a maximum of 36,300 cfm. All fans are equipped with vibration monitoring systems. High vibration switches shall cut the power to the fans if vibration exceeds 1 Inch Per Second (IPS). Remote monitoring is required to inform the operator if the fan is stopped.

Each fan is provided with inlet and outlet dampers to isolate or adjust the air flow to the operating fan. The fans are installed on a permanent concrete pad. The outlet of each fan connects to an outlet header to transport the treated foul air to the inlet plenum of the existing ( NdeN ) Nitrification De- nitrification blowers. A new stainless steel control panel will contain all necessary fan motor starters, switches, gauges, etc. necessary for proper operation of the BTF. All ducting at the inlet and discharge of the exhaust fans shall be wrapped with sound insulation to reduce the harmonic noise level.

Differential pressure indicator transmitters will be installed across each degreaser and demister. Differential pressure indicators will be installed across each BTF media layer.


1” sample ports shall be installed; one each at the inlet and outlet of the BTF. ½” sample ports shall be installed at inlet and outlet of each BTF media layer for daily sampling by the operator. Daily sample ports shall be easily accessible or piped down to a reachable level for maintenance personnel.

The BTF is a concrete structure with corrosion lining. Its inside dimensions shall be 21.5’ (W) X 21.5’’ (L) X 35’-8” (H). The BTF shall contain three (3) layers of Matala media, each 5’-3”’ high. It shall also have a fluid recirculation pumping system with sprinklers designed to keep the media moist during normal operation. The Matala media shall be cleaned and re-used or replaced as seen fit during maintenance.

B. COMPONENTS: The BTF Odor Control System shall include but not be limited to the following

components: (1) Biotrickling Filter concrete structure (2) BTF media (3) Two foul air (FA) fans (4) BTF media irrigation system (5) Nutrient dosing system (6) Electrical and Instrument panels (7) Two FA degreasers (8) One demister (9) Make-up water supply sub-system (10) Four emergency shower and eye wash systems ( ESEW’s )

C. INSTRUMENTATION AND CONTROLS: See Specification Section 17400, Process

Instrumentation and Controls

D. STRUCTURAL DESIGN: See structural design drawings and Specifications

E. ELECTRICAL DESIGN: All electrical equipment shall confirm to applicable standards of the National Electrical Manufacturers Association, the National Electrical Code and the City of Los Angeles Electrical Code and Section 01451 of the General Requirements. Electrical equipment located within three-feet of leakage sources as defined by NFPA 820 shall conform with NEC class 1 Division 2 as described in Article 501 of the NEC. See electrical design drawings and specifications for further details.

F. Power Supply: Unless otherwise shown, the power supply to the equipment shall be 480-volt, 60-Hz, 3-phase.

G. BTF Performance: The BTF shall be designed for the following operating conditions and criteria:

Equipment Numbers 6171-1102-1 Location DCTWRP, CA Type Biotrickling Design Air Flow ( CFM ) 36,300 (28,000 min) Design Pressure ( PSIG ) +/- 1 Design Temperature ( F ) 50 to 125


Gas Velocity thru BTF ( FPM ) 78.5 (60.6) Inside Dimensions ( FT ) 21.5’’ (W) X 21.5’ (L) X 35’-8” (H). Media Type Matala SFM 365 ( blue ) Media Depth ( FT ) 13.5 ( 3 layers, 5-3” ea ) Maximum ∆Ρ across media ( in. W.C.) 7.0 H2S concentration ( av / peak, ppm ) 23 / 75 H2S Removal ( % ) 99 Residence time ( sec ) 12 ( 15 )

2.2 BIO-TRICKLING FILTER ( BTF) CONCRETE STRUCTURE

A. The CONTRACTOR shall furnish a Bio-trickling Filter ( BTF ) concrete structure with nozzles,

view ports, maintenance access manways, internal lining, other accessories and dimensions as shown in the mechanical and structural design drawings and as specified herein.

B. The concrete structure shall be fabricated of concrete material in accordance with the structural design drawings and specifications

2.3 BIO-TRICKLING FILTER ( BTF ) MEDIA

A. The BTF media shall be sole-sourced per General Requirements Specifications

B. The BTF media shall be Matala FSM 365 ( AFRAS AF 365 ) Polyethylene Filter, Full Sheet, Blue, size 78” Long X 39” wide X 1.5” High.

C. The BTF media shall not contain any bio-solids or manure ( during start-up it may be seeded with LPE and supplemental nutrient from Nutrient tank with the approval of the ENGINEER.

D. The BTF media shall have a minimum life expectancy of 10 years. It shall be certified by the manufacturer prior to shipment to the project site location

E. The CONTRACTOR shall install the BTF media inside the BTF reactor structure in accordance with instructions from the manufacturer.

2.4 EXHAUST FANS

A. General: The CONTRACTOR shall furnish two (2) exhaust fans with non-sparking rotors as specified herein. All housings and air stream surfaces shall be of 316 S.S. material. Each fan shall be a centrifugal fan with belt drive designed for continuous, 24-hour per day service.

B. Exhaust Fans: Fans shall be an Nyb RTS fan, size 448, aluminum wheel, arrangement 1, CW

rotation, discharge TH, motor position Z, belt driven fan as manufactured by the New York Blower Company, or approved equal; it shall have impellers designed for use in a corrosive environment. The fan construction must meet the requirements of AMCA B spark resistant construction requirements. The fans shall be belt driven, AMCA Arrangement 1 with horizontal discharge. Backward inclined or flat radial bladed fans are not acceptable. Fan ratings shall be based on tests in accordance with AMCA Standard 210.

C. The impellers shall be of coated aluminum material to meet the requirements of AMCA B ( wheel )


Spark Resistant Construction (SRC ). The coating material shall be Scotchkote 134, or equal.

D. The electric motors shall be as follows: 200 HP, 1800 RPM, high efficiency, 1.15 service factor, Class F insulation, severe/chemical duty, TEFC, with space heater, and shall be suitable for 480 V/3 Ph/60 Hz power supply and class 1, Div. 2 enclosure.

E. The fans shall be manufactured with added 3” extensions to inlet and outlet flanges and doors to accommodate acoustic insulation. This insulation shall be as specified in para. 2.13, Duct Acoustic Insulation, of this specification. Maximum sound pressure level at 5.0 ft distance shall be 85 dBA

F. The flow/pressure performance requirements shall be as listed below.

Exhaust Fan Design Requirements Air Flow Rate ( cfm ) 36,300

Total Static Pressure at 1588 rpm ( in. WG ) 20.5

Fan Input power ( BHP ) at 70 F & 0 ft elev. 176

G. Materials and Construction:

Impellers statically and dynamically balanced; AMCA B spark resistant

construction; aluminum material with Scotchkote 134 coating, or equal.

Drive shaft 316 SS. Drive belt drive. Belt guard with 316 SS mounting brackets. Bearings Heavy duty ball bearings. Lubrication Grease lubricated. Stainless steel lube tubes extend from

bearings to the exterior of the fan housing. Internal bolts 316 SS. Drive mounting 316 SS mounting hardware.. Connections Flanged inlet and outlet (316 SS). 316 SS Housing ¼” minimum split housing. Bolted housing door . Housing drain

with 1-1/2” 316 SS plug, Integral lifting eyes and 316 SS flush bolted cleanout door.

CS Base Integral fan/motor pedestal of CS material. Coating and Finish Per Specification Section 09800 ( CS components ).

H. The minimum fan housing thickness shall be 1/4" 316 stainless steel, continuously welded and housing to be reinforced with additional bracing for structural integrity. I. All airstream components such as wheel, inlet cone, inlet assembly, shaft, drain, flanges, access door and shaft seal housing shall be fabricated of 316 stainless steel. J. Control of the fans shall be in accordance with Specification Section 17400, Process Instrumentation and Controls K. Fan inlet and outlet shall be flanged. The fan outlet shall be bolted to a flanged flexible connector and

outlet damper. The fan inlet shall be bolted to the flanged inlet flexible connector which will in turn be bolted to the fan inlet damper.

L. Each fan shall be equipped with a Robert Shaw vibration switch, or equal, which shall shut off the fan CIP-6171 BIOTRICKLING FILTER ODOR CONTROL SYSTEM DCT BLOWER FOUL AIR CLEAN-UP SYSTEM DIVISION 13 5/18/16 13445-8

if high vibration occurs. See Specification Section 17400, Process Instrumentation and Controls, for detail requirements.

M. As a minimum, fan accessories shall include the following:

• Housing drain with valve • Bolted access doors • Double lip low leakage shaft seals • Shaft/bearing guard • Belt guard • Integral lifting lugs • Common sub-base • Heavy duty ball bearings • 1/4" minimum housing thickness

H. Bearings to be grease lubricated, heavy duty ball type with a minimum L-10 life of 100,000 hours.

I. All fan wheels and fan assemblies shall be statically and dynamically balanced to current ANSI /

AMCA standard 204-96 prior to shipment: quality grade G2.5 for wheel balance; the completed fan assembly shall be trim balanced to level BV-4

J. The fan and motor assemblies shall be aligned on-site using laser alignment tools and Rotalign

Alignment Standards, or equal.

2.5 BTF MEDIA IRRIGATION SYSTEM

A. The CONTRACTOR shall furnish and install a BTF media irrigation system that shall provide moisture to the BTF media when required. The irrigation system shall be activated and deactivated by a timer control circuit. The timers will control frequency and duration of the operation of the irrigation solenoid valves that regulate the flow of water to the irrigation system. It shall include at least the following components: (1) two recirculating pumps (2) spray nozzles (3) a simplex basket strainer to prevent clogging of the nozzles (4) SCH 80 CPVC piping

B. Re-circulating pumps: The two recirculating pumps ( one duty and one stand-by ) shall be of high endurance, high resistance and suitable for low pH applications ( less than or equal to one ) as follows: (a) flow capacity: 330 gpm (b) TDH 80 ft

(c) liquid: non-chlorinated water, low ph, 1.0 sp. gr., 1.0 cp viscosity (d) type: horizontal, centrifugal, ANSI, magnetically coupled

(e) configuration: close coupled (f) suction X discharge: 4.0” X 3.0”, 150 lb ANSI, RF (g) Materials of construction: casing DI w/ ETFE lining impeller, wetted mat’ls CFR ETFE o’ring FKM, viton rear casing CFR ETFE


wear parts SiC / CFR PTFE shaft silicon carbide

base SS (h) efficiency, min. 62% (i) electric motor: 15 HP, TEFC, 460V, 3phase, 60 HZ (j) manufacturers, model: (1) Sundyne Ansimag K436C0SBK111110 (2) or equal

C. Spray nozzles: The media irrigation system shall be designed for maximum / normal / minimum flows of 330 / 280 / 220 gpm. A total of (10) ten nozzles shall be used. Each nozzle requirements shall be as follows:

(a) design clog resistant (b) size 1 ½” MNPT (c) spray pattern full cone (d) spray angle 90 deg (e) material 316 SS (f) droplet size 1092 μm ( 33 gpm @ 13.3 psi inlet pressure ) 1092 μm ( 28 gpm @ 9.4 psi inlet pressure )

1343 μm ( 22 gpm @ 5.6 psi inlet pressure ) (g) manufacturers, model (1) Bete, Maxipass MP625 (2) or equal

D. The basket strainer requirements are as follows: (a) size 6” flange (b) flange conn. ANSI, full face, class 150# (c) material CPVC (d) basket 316 SS with 3/32” perforations (e) seals EPDM O’rings (f) manufacturers, model (1) Stayflow Strainer

(2) Spears (2) or equal

E. SCH 80 CPVC piping shall be as shown on the P&ID’s.

2.6 BTF NUTRIENT DOSING SYSTEM

A. The CONTRACTOR shall furnish and install a BTF nutrient dosing system that shall include at least the following components:

(1) one nutrient metering pump and accessories to inject nutrients from the nutrient tank to the BTF irrigation system on an as required basis (2) one nutrient tank (3) CPVC piping

B. The nutrient pump requirements are as follows: (a) type mechanically actuated diaphragm metering pump (b) capacity 10 GPH @ 100 psi (c) electric motor ¼ HP,115 VAC,1PH, 60 HZ (d) liquid end material PVC (e) connections ¼” MNPT (f) capacity control manual (g) check valve, ball PVC, ceramic (h) seals viton (i) manufacturer, model (1) Milton Roy D4688PM4NNN

(2) or equal

C. The pulsation damper requirements are as follows:


(a) type chargeable (b) damper volume 36 cu inches (c) inlet conn ¾” NPT (d) bladder/bellows mat’l viton (e) housing mat’l PVC (f) max pressure 150 psig (g) temp range 20-150 F Manufacturer, model (1) BLACOH Sentry C1311V

(2) or equal

D. The pressure relief valve requirements are as follows: (a) size ½” FNPT (b) material CPVC (c) adjustable pressure range 5-150 psi (d) spring range 10-15 psig (e) diaphragm vulcanized PTFE / EPDM (f) manufacturer, model (1) GRIFFCO PRT-050-CP

(2) or equal

E. The back pressure valve requirements are as follows: (a) size ½” FNPT (b) material CPVC (c) adjustable pressure range 5-150 psi (d) spring range 10-15 psig (e) diaphragm vulcanized PTFE / EPDM (f) special function anti syphon (g) manufacturer, model (1) GRIFFCO BPT-050-CP

(2) or equal

F. The calibration column requirements are as follows:

(a) calibration cylinder mat’l PVC (b) end cap mat’l PVC (c) process conn ½” FNPT. (d) model easy clean (e) read out direct, GPH (f) top sealed w/ overflow conn. (g) size 2000 mL (h) manufacturer, model (1) GRIFFCO CC-2000-EZ

(2) or equal

G. The gauge isolator requirements are as follows:

(a) mat’l CPVC (b) diaphragm mat’l PTFE (c) max pressure 250 psi (d) instrument X process conn. ½” X ½” FNPT (e) manufacturer, model (1) MARQUEST MODEL TG-55TXXX-CPV

(2) or equal

H. The injection quill requirements are as follows: (a) size ½” (b) process conn. ½” MNPT (c) quill mat’l CPVC


(d) spring mat’l Hastelloy C (e) configuration 45 deg (f) check valve ball mat’l 316 SS (g) seals EPDM (h) manufacturer, model (1) GRIFFCO ICV

(2) or equal

I. The nutrient tank and stand ( by same manufacturer ) requirements are as follows: (a) capacity 240 gallons (b) material medium density polyethylene (c) dimensions 42” dia X 59” high (d) tank bottom full drain, 45 deg cone (e) lid 12” vented (f) bottom connection 2” FNPT (g) tank clearance w/stand 11” (h) Mfr, tank P/N (1)Ace Roto-Mold / Den-Hartog CBFD240-42

(2) or equal (j) Mfr , stand P/N (1) Ace Roto-Mold / Den-Hartog A-CBFD042-45ST

(2) or equal

J. CPVC piping shall be as shown on the P&ID’s. 2.7 MAKE-UP WATER SUPPLY AND DRAINAGE PIPING

A. The CONTRACTOR shall furnish and install make-up water supply and drainage piping and piping

supports in accordance with the mechanical design drawings B. All piping shall be tested for any water leaks prior to system start-up.

C. All piping shall be as shown on the P&ID’s

2.8 EMERGENCY SHOWER AND EYE WASH ( ESEW ) SYSTEMS

A. The combination emergency shower and eye/face wash systems shall meet all the requirements of ANSI Z358.1-2014 Standard or its latest edition. At a minimum they shall provide: (a) tepid water ( 60-100 F ) (b) water supply pressure 30 psig ( +0.5psi / -0.0 psi ) (c) must be easily accessible from any hazard within 10 seconds ( approx. 55 ft away ) (d) manufacturer, model (1) Haws 8300 (2) or equal

2.9 INSTRUMENTATION AND CONTROLS DESIGN:

A. Instrumentation and controls shall be as shown in the design P&ID’s and I&C design documents and

Specification Section 17400, Process Instrumentation and Controls. 2.10 ELECTRICAL DESIGN

Electrical design shall be as shown in the design P&ID’s and Electrical design documents and Specification Section 16010, Electrical General Provisions.

2.11 DAMPERS: The CONTRACTOR shall furnish and install FRP spectacle blind flanges, isolation and

control dampers in accordance with the P&ID’s and per Specification Section 13380, Odor Control Dampers and Valves.

2.12 FAN COATING: Fan coating for CS components shall be per fan manufacturer's recommendations

suitable for the highly corrosive environment at HTP. Fan manufacturer shall submit coating


procedures for the ENGINEER’S approval prior to fan fabrication. At minimum, coating shall be as required by Section 09800 – Protective Coating, Schedule FM-2.

2.13 DUCT ACOUSTIC INSULATION

A. Acoustic insulation shall be provided on the outside surface of the FRP ducts on the suction

and discharge sides of both exhaust fans to minimize the noise transmitted to the environment in accordance with the mechanical design drawings.

B. This insulation shall be America Mat closed cell foam, 1” thick, as manufactured by Soundproofing America, or Vinaflex noise barrier VN-100 as manufactured by GLT Products, or equal.

C. The insulation shall be applied using spray contact cement or as recommended by the manufacturer.

D. The insulation shall be protected from the environment and from degradation with time. It

shall be covered with a smooth aluminum weather-proof metal or plastic preformed jacketing. 2.14 FRP DUCT & ACCESSORIES

A. FRP ducts and accessories shall be made according to Section 13390, FRP Ducts, of these specifications.

2.15 DEGREASER

A. Two grease mesh eliminators shall be installed up-stream of the BTF to reduce the grease content of the inlet air streams to the Biotrickling Filter ( BTF ). These filters shall remove 99.9% of greased droplets having a nominal size 10 microns or larger. The housing for the degreasers shall be of fiberglass construction and shall have a design pressure 2.0 psig. The degreasers shall be equipped with one differential pressure indicator transmitter to show the pressure drop across the degreaser filters during normal operation. An increase in differential pressure across the degreaser filters to a maximum value will indicate the need to clean the filter. The degreasers shall be installed on a concrete pad. The housings of these filters shall include a drain line with valve to drain the captured grease. The degreaser housings shall include an access door to access the filters for maintenance.

B. Each unit shall consist of one filter pad housed inside an FRP housing fabricated utilizing Hetron 922 vinyl ester resin per PS 15-69. The filter pad shall be an ACS style 7CA woven 316 SS pad, or equal, 4 inches thick or thicker, for grease elimination. The design of the filter pad shall be such that it can be removed in two sections for cleaning. The housing shall be flanged with a maintenance door and wing nuts to allow easy removal and replacement of the filter pad from the side of the unit.

C. The maximum pressure drop in the clean condition shall be 1” W.C. at full air flow capacity. The maximum pressure drop in the dirty condition shall be 2” W.C. at full air flow capacity

D. An FRP panel shall be provided on each degreaser for installation of a differential pressure indicator transmitter .

E. Each unit shall be supplied with 316 SS bolting and 1/8” neoprene gaskets for all flanges.

F. Each degreaser shall meet at the very least the following requirements: (1) Degreaser type mesh (2) Qty req’d: 2 ( degreaser #1 & degreaser #2) (3) Air capacity (1) 11,000 cfm ( degreaser #1 )

(2) 25,300 cfm ( degreaser #2 ) (4) Inlet / outlet flanges: (1) 30” ID, FRP per PS 15-69 ( degreaser #1 )

(2) 40” ID, FRP per PS 15-69 ( degreaser #2 ) (5) Housing material FRP (6) Mesh material: 316 SS


(7) Direction of flow : horizontal (8) Design criteria: 99.9% removal of grease droplets, 10 microns or larger (9) Design pressure: 2 psig / -1 psig (10) Design pressure drop ( clean ) 1” W.C. (11) Design temperature: 45-95 F (12) Access door location side

G. Manufacturers: (1) Calgon Carbon Corporation (2) Daniel Company. (3) Koch-Glitsch (4) Munters Corporation (5) Duall Air & Water Technologies (6) AMACS

2.16 DEMISTER

A. A mesh mist eliminator shall be installed down-stream of the BTF to reduce the moisture content of

the inlet air stream to the two foul air fans. This filter shall remove 99.9% of liquid droplets having a nominal size 10 microns or larger. The housing for the mist eliminator shall be of fiberglass construction and shall have a design pressure of 2.0 psig.. The mist eliminator shall be equipped with one differential pressure indicator transmitter to show the pressure drops across the mist eliminator filter. An increase in differential pressure across the mist eliminator filter to a maximum value will indicate the need to clean the filter. The mist eliminator shall be installed on a concrete pad. The housing of this filter shall include a drain line with valve to drain the captured condensations. The mist eliminator housing shall include an access door to access the filter for maintenance.

B. This unit shall consist of one filter pad housed inside an FRP housing fabricated utilizing Hetron 922 vinyl ester resin per PS 15-69. The filter pad shall be an ACS style 8P woven PPL pad, or equal, 4 inches thick or thicker, for mist elimination. The design of the filter pad shall be such that it can be removed in two sections for cleaning. The housing shall be flanged with a maintenance door and wing nuts to allow easy removal and replacement of the filter pad from the side of the unit.

C. The maximum pressure drop in the clean condition shall be 1” W.C. at full air flow capacity. The maximum pressure drop in the dirty condition shall be 2” W.C. at full air flow capacity

D. An FRP panel shall be provided for installation of a differential pressure indicator transmitter.

E. The unit shall be supplied with 316 SS bolting and 1/8” neoprene gaskets for all flanges.

F. The demister shall meet at the very least the following requirements: (1) Demister type: mesh (2) Qty req’d: 1 ( demister #1 ) (3) Air capacity: 37,000 cfm (4) Inlet / outlet flanges: 52” ID, FRP per PS 15-69 (5) Housing material: FRP (6) Mesh material: polypropylene (7) Direction of flow: horizontal (8) Design criteria: 99.9% removal of water droplets, 10 microns or larger (9) Design pressure: 2 psig / -1 psig (10) Design pressure drop ( clean ): 1” W.C. (11) Design temperature: 45-95 F (12) Access door location: side

G. Manufacturers:


(1) Calgon Carbon Corporation (2) Daniel Company. (3) Koch-Glitsch (4) Munters Corporation (5) Duall Air & Water Technologies (6) AMACS

PART 3 -- EXECUTION 3.1 GENERAL REQUIREMENTS

A. The CONTRACTOR shall install all parts of the odor control system in strict accordance with the manufacturer's published instructions and under the guidance of the manufacturer's field representative.

3.2 OPERATOR TRAINING

A. The CONTRACTOR shall provide operator training as specified in the General Requirements specifications.

3.3 CIVIL AND STRUCTURAL ITEMS

A. All civil and structural work shall be performed in strict accordance with the civil and structural design documents and specifications.

3.4 WORKMANSHIP

A. Ductwork and Fiberglass Items: The finished laminate shall be free from visual defects such as foreign inclusions, dry spots, air bubbles, pin holes, pimples, delamination, exposed reinforcement (glass fibers), and runoff. The exterior surface shall be smooth, with no sharp projections. Care shall be taken to fill voids and crevices at joints and fittings. Representative laminate samples shall be sent to the ENGINEER prior to fabrication for acceptance of surface finish and visual defects. The fabricated work shall be identical in surface finish and visual defects.

B. Supports: The CONTRACTOR shall support all runs of ductwork and piping as indicated on the design drawings and as required to meet the sag requirements specified herein. Supports shall be fabricated of 316 SS and designed to meet the installation requirements. Attachment of the supports to fiberglass ducting with screws is unacceptable. All fiberglass vessels and major sections of ductwork shall be provided with lifting lugs or eyes to facilitate handling and installation.

3.5 FIELD JOINTS IN FIBERGLASS DUCTS

A. Field joints in fiberglass ducts shall be made according to Specification Section 13390, FRP Ducts.

(END OF SECTION)


BLANK PAGE


SECTION 13446 BIOTRICKLING FILTER MEDIA

(PRE-NEGOTAITED BID ITEM)

PART 1 - GENERAL

1.1 SCOPE.

Work required under this section consists of furnishing biotrickling filter (BTF) media for the CONTRACTOR to cut and install into complete BTF units. The intent of the BTF system is to remove gaseous hydrogen sulfide and other sewer odor. The BTF unit consists of a bioreactor vessel containing three levels of media configured to eliminate short-circuiting of the foul air stream and provide intimate contact between the foul air and the biological media equipment or are not specified herein are covered in other sections.

1.2 DEFINTIONS.

MEDIA PROVIDER – the entity supplying he BTF media.

1.3 GENERAL

Equipment shall be designed for long life under working conditions specified herein, including corrosive atmospheres and continuous operation. All parts that are exposed to corrosive conditions shall be made from corrosion-resistant materials.

Equipment furnished under this section shall be fabricated, manufactured, assembled, shipped, and stored (if necessary) in proper operating condition in full conformity with the drawings, specifications, engineering data, instructions, and recommendations of the equipment manufacturer unless exceptions are noted by engineer.

A. Coordination. Equipment provided under this section shall be fabricated by the MEDIA PROVIDER. The CONTRACTOR shall install the media in full conformity with drawings, specifications, reference standards, engineering data, shop drawings, instructions, and recommendations of the equipment manufacturer unless exceptions are noted by the Engineer.

B. General Requirements: The General Requirements shall apply to all equipment and materials furnished under this section.

1.4 SUBMITTALS

Submittal shall be submitted in accordance with the General Requirements, Section 01330.

A. Media

Media Type

Media thickness

Total square footage of media to be provided

CIP-6171 BIOTRICKLING FILTER MEDIA DCT BLOWER FOUL AIR CLEAN-UP SYSTEM DIVISION 13 05/18/16 13446-1

Dimensions of media sheets to be provided

1.5 COORDINATION.

A. The CONTRACTOR shall coordinate with MEDIA PROVIDER for equipment delivery.

B. The MEDIA PROVIDER shall coordinate delivery of the BTF media with the CONTRACTOR. The CONTRACTOR shall be responsible for any storage of BTF

1.6 DELIVERY, STORAGE, AND HNADLING

A. Shipping, Handling and Storage. Shipping shall be in accordance with the General Requirements, Section 01149. Handling and storage shall be in accordance with the General Requirement 01150.

PART 2 - PRODUCTS

2.1 SERVICE CONDITIONS.

The BTF system will be installed as an odor treatment system for gaseous hydrogen sulfide and other odor causing gas. All equipment in contact with the process air shall be designed to resist corrosion in a humid air environment.

2.2 SYSTEM COMPONENTS, PERFORMANCE AND DESIGN REQUIREMENTS.

A. Performance and Design Requirements. The system will be capable of simultaneously removing hydrogen sulfide and other sewer odors. The BTF media shall meet the deisgn parameters set in Division 13445. BIOTRICKLING FILTER ODOR CONTROL SYSTEM.

B. A sufficient quantity of media shall be supplied to meet the installation requirements as shown in section 13445 , BIOTRICKLING FILTER ODOR CONTROL SYSTEM.

2.3 MATERIALS

A. Biotrickling Filter Media.Each vessel shall contain two (2) media levels as indicated in the drawings. The biotrickling filter media shall be the low-low polyethylene (LLDPE) filter media manufactured by Matala, Product Code FSM365. This media is sold is sheets of 39-inches wide, 78-inches long, and 1.5-inches thick. No substitutions will be allowed for the filter media.

PART 3 - EXECUTION

3.1 INSTALLATION

CONTRACTOR shall install the BTF media in accordance with Section 13445 , Biotrickling Filter System and in accordance with installation diagrams and recommendation provided by MEDIA Provider.

(END OF SECTION)

CIP-6171 BIOTRICKLING FILTER MEDIA DCT BLOWER FOUL AIR CLEAN-UP SYSTEM DIVISION 13 05/18/16 13446-2

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Form Gen. 133 (Rev. 05/12)

CITY OF LOS ANGELES

INSTRUCTIONS AND INFORMATION ON COMPLYING WITH CITY INSURANCE REQUIREMENTS

(Share this information with your insurance agent or broker)

1. Agreement/Reference All evidence of insurance must identify the nature of your business with the CITY. Clearly show any assigned number of a bid, contract, lease, permit, etc. or give the project name and the job site or street address to ensure that your submission will be properly credited. Provide the types of coverage and minimum dollar amounts specified on the Required Insurance and Minimum Limits sheet (Form Gen. 146) included in your CITY documents. 2. When to submit Normally, no work may begin until a CITY insurance certificate approval number (“CA number”) has been obtained, so insurance documents should be submitted as early as practicable. For As-needed Contracts, insurance need not be submitted until a specific job has been awarded. Design Professionals coverage for new construction work may be submitted simultaneously with final plans and drawings, but before construction commences. 3. Acceptable Evidence and Approval Electronic submission is the best method of submitting your documents. Track4LA® is the CITY’s online insurance compliance system and is designed to make the experience of submitting and retrieving insurance information quick and easy. The system is designed to be used by insurance brokers and agents as they submit client insurance certificates directly to the City. It uses the standard insurance industry form known as the ACORD 25 Certificate of Liability Insurance in electronic format – the CITY is a licensed redistributor of ACORD forms. Track4LA® advantages include standardized, universally accepted forms, paperless approval transactions (24 hours, 7 days per week), and security checks and balances. The easiest and quickest way to obtain approval of your insurance is to have your insurance broker or agent access Track4LA® at http://track4la.lacity.org and follow the instructions to register and submit the appropriate proof of insurance on your behalf. Insurance industry certificates other than the ACORD 25 that have been approved by the State of California may be accepted, however submissions other than through Track4LA® will significantly delay the insurance approval process as documents will have to be manually processed. All Certificates must provide a thirty (30) days’ cancellation notice provision (ten (10) days for non-payment of premium) AND an Additional Insured Endorsement naming the CITY an additional insured completed by your insurance company or its designee. If the policy includes an automatic or blanket additional insured endorsement, the Certificate must state the CITY is an automatic or blanket additional insured. An endorsement naming the CITY an Additional Named Insured and Loss Payee as Its Interests May Appear is required on property policies. All evidence of insurance must be authorized by a person with authority to bind coverage, whether that is the authorized agent/broker or insurance underwriter. Completed Insurance Industry Certificates other than ACORD 25 Certificates are sent electronically to [email protected].

Additional Insured Endorsements DO NOT apply to the following:

Indication of compliance with statute, such as Workers’ Compensation Law. Professional Liability insurance.

Verification of approved insurance and bonds may be obtained by checking Track4LA®, the CITY’s online insurance compliance system, at http://track4la.lacity.org. 4. Renewal When an existing policy is renewed, have your insurance broker or agent submit a new Acord 25 Certificate or edit the existing Acord 25 Certificate through Track4LA® at http://track4la.lacity.org.

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5. Alternative Programs/Self-Insurance Risk financing mechanisms such as Risk Retention Groups, Risk Purchasing Groups, off-shore carriers, captive insurance programs and self-insurance programs are subject to separate approval after the CITY has reviewed the relevant audited financial statements. To initiate a review of your program, you should complete the Applicant’s Declaration of Self Insurance form (http://cao.lacity.org/risk/InsuranceForms.htm) to the Office of the City Administrative Officer, Risk Management for consideration. 6. General Liability insurance covering your operations (and products, where applicable) is required whenever the CITY is at risk of third-party claims which may arise out of your work or your presence or special event on City premises. Sexual Misconduct coverage is a required coverage when the work performed involves minors. Fire Legal Liability is required for persons occupying a portion of CITY premises. Information on two CITY insurance programs, the SPARTA program, an optional source of low-cost insurance which meets the most minimum requirements, and the Special Events Liability Insurance Program, which provides liability coverage for short-term special events on CITY premises or streets, is available at (www.2sparta.com), or by calling (800) 420-0555. 7. Automobile Liability insurance is required only when vehicles are used in performing the work of your Contract or when they are driven off-road on CITY premises; it is not required for simple commuting unless CITY is paying mileage. However, compliance with California law requiring auto liability insurance is a contractual requirement. 8. Errors and Omissions coverage will be specified on a project-by-project basis if you are working as a licensed or other professional. The length of the claims discovery period required will vary with the circumstances of the individual job. 9. Workers' Compensation and Employer's Liability insurance are not required for single-person contractors. However, under state law these coverages (or a copy of the state's Consent To Self Insure) must be provided if you have any employees at any time during the period of this contract. Contractors with no employees must complete a Request for Waiver of Workers’ Compensation Insurance Requirement (http://cao.lacity.org/risk/InsuranceForms.htm). A Waiver of Subrogation on the coverage is required only for jobs where your employees are working on CITY premises under hazardous conditions, e.g., uneven terrain, scaffolding, caustic chemicals, toxic materials, power tools, etc. The Waiver of Subrogation waives the insurer’s right to recover (from the CITY) any workers’ compensation paid to an injured employee of the contractor. 10. Property Insurance is required for persons having exclusive use of premises or equipment owned or controlled by the CITY. Builder’s Risk/Course of Construction is required during construction projects and should include building materials in transit and stored at the project site. 11. Surety coverage may be required to guarantee performance of work and payment to vendors and suppliers. A Crime Policy may be required to handle CITY funds or securities, and under certain other conditions. Specialty coverages may be needed for certain operations. For assistance in obtaining the CITY required bid, performance and payment surety bonds, please see the City of Los Angeles Bond Assistance Program website address at http://cao.lacity.org/risk/BondAssistanceProgram.pdf or call (213) 258-3000 for more information.