BCT 102

BCT 102

Residential PrintReadingWeek 10

1MEPMechanical Electrical &Plumbingwork coordinates with all other trades*2.Mechanical & PlumbingMechanical - HVAC (Heating Venting and Air conditioning).

Electrical lighting fixtures, switches, outlets, panels, appliances, etc.

Plumbing - pipes, fixtures & fittings; water supply/distribution, and waste removal.

3MechanicalHVAC*SIMPLIST FORM.

4Mechanical System-Common types

1.Central Forced air (Furnace/fan blower /condenser & compressors; ducts; registers/diffusers) Heat Pump Heat & Cooling within One unit Most Common type of Heating/Cooling* takes heat out of inside air (cooling) or takes heat out of outside air to heat bldg.

2.Hydronic Hot Water system (Boilers/pipes supply hot water to Radiators/Baseboards/or tube arrays below floor YOUR TERMINAL UNITS RADIANT Type Heat exchange)

3.Radiant (Control surface temp. of heating panel or Floor at the heat source Uniform heat/reduced air movement) use Electricity to heat Coils under floor or Piped hot (or cold) water to radiate heat

5Forced Air Furnace heat house thru convectionTwo part system : central heating device-Furnace + distribution network-Ducts

Fan blows heated air from the heat exchanger into supply Plenum smaller branch ducts tap into plenum air supply flows to Diffusers (in ceiling or floor registers).

Air return grills centrally located picks up returnair and carries it back to furnace via return duct into a return air plenum

Gas Furnaces have exterior air intake and exhaust for the combustion chamber6Heat pump Heat pump extracts heat from space at low temp & discharges it to another space at a higher temp

2 heat exchangers, a compressor & expansion valve & interconnecting pipes filled with refrigerant.Reversing the direction of the refrig. Flow system can either heat or Cool

Compressor sits outside the house on a concrete pad feeding the chilled refrig. to fan coil units 7Condition the air using Nature:Cross ventilation (open windows)Stack effect (heat rises so remove it from Roof area/vent opening skylights)Ceiling fans (or whole house fan workWith stack effect)Block solar heat gain(overhangs & low E insulated glass)Heat-storing (like concrete /masonry absorb heat & release heat slowly

8Mechanical System- Forced CONDITIONED Air

Furnace feed heated air through ducts & deliver it to registers(or diffusers)

Return air to system through return grills separtated from diffuser.9Mechanical System- ForcedFurnace/ducts & registers.Air intake to furnace & exhaust

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11Mechanical System-forced air thru ducts delivered at the supply register (@ floor or ceiling)

Heat pumps-One unit heats & cools11Mechanical System- Hydronic ..Hot waterBoiler/pipes & Radiators or Terminal unit TU

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Radiant Floor in Detail Section

13Heat pump hooked up to furnace with thermostat

ZonesProvide Flexibility/ temperature reading.

14Mechanical System-

ZonesProvide Flexibility/Efficiency Control temperature of Areas (or rooms) individually with thermostats and Dampers

Thermostats The control for Heating & Cooling Should be centrally located in zoned area or house to give an average temperature reading.

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Mechanical symbols in a legend on the dwg. s .16

Duct layout for forced-air system17Duct layout for forced-air system

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Simple HVAC layout in a ceiling plan - give register locationsheat registers often near cold area windows; return grill centrally located in hallSUPPLY DIFFUSER (REGISTER)RETURN AIR GRILL19.Plumbing

20.Plumbingis your Water distribution System

Waste disposal (sanitary sewage) DRAIN WASTE VENT or DWV

Supply -Pipes for Heat/Cold water

. gas gets piped too!

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... sewage disposal is life safety issue.

Lic. Plumber installs system in accordance with specs and local codes

22Water Meter Housing

Water Meter

supplyWater enters the house in to 1 pipePressure Reduction Valve80psi coming inReduce to 25 -30psi

Pressure Reduction Valve

26If you dont have a pressure reduction valve and you want to know the pressure screw one onto a hose bib

... sewage disposal is life safety issue.

Waste linesLic. Plumber installs system in accordance with specs and local codes...for Houses pipe layout (DWGS.) are not required as fixtures & fittings are located on plans .... Riser diagrams are! For inspector to see adequate connections and pipe sizes28

DRAIN PIPINGSTACKSHOUSE & SEWER DRAINSTRAPSVENT STACKS & PIPESBuilding DrainSewer Line... sewage disposal

P-trap & Air-vent for waste disposal system to work

Slope of waste lines : 1

Vent Through Roof VTR

VTR

30P-Trap DWV

31If water falls below the dip gasses will get into the house. Summer homes exampleS-Trap and Drum TrapsDWV

Trap FactsAll plumbing fixtures require trapsAll traps require ventsA critical distance must be maintained between the trap weir and the nearest vent

P-Traps DWV

35If water falls below the dip gasses will get into the house. Summer homes exampleP-Traps DWV

VentsMax. Distance of fixture trap from vent1 Trap 601 Trap 722 Trap 963 Trap 1444 Trap 192VentsWhat happens when the vent is too far from the trap?Three optionsIncrease the size of the trapRe-VentBow Vent (Loop Vent)Automatic Vent39Example: 1 trap nearest vent is 84. Increase the trap size to 2 96Supply Lines - Pipes shown & Abbrev.Text

40Plumbing 3 stages of construction Service entrance (prior to FND. Concrete pour)Rough-in plumbing(piping/drains - Inspected)Finished plumbing install fixtures & connections (follow GYP. Walls)Plumbing hidden in the walls...

WASTE STACK41

Plumbing 3 stages of construction Service entrance (prior to FND. Concrete pour)Rough-in plumbing(piping/drains - Inspected)Finished plumbing install fixtures & connections (follow GYP. Walls)Plumbing hidden in the walls...42.Plumbing

AT STREETAT HOUSE43

44Sewage Disposal - Sewer or Septic

(ATat the street

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45Sewage Disposal - Sewer or Septic

45Plumbing symbols found in legend on plumbing drawings

symbols can varyText

46Plumbing Waste or DWV Riser diagram or Single line Dwg. shows pipe & air vent layout & sizes

...could be required for Permit(Pipe Diam. shown)VTR vent thru roofC.O. clean out47Plumbing - PIPE LAYOUT ....Supply just showing hot/cold system from water heater (not as common in print set).

48Single-line dwg. RISER DIAGRAM

RequiredDwg.Pictorialto understand single-line dwg.49Plumbing for hydronic heat like this kitchen base cabinet toe kick heater or radiant floor pipingRequiredDwg.Pictorialto understand single-line dwg.

50MechanicalHVAC*

Fixtures (Toilet/sink/tub.....) & Fittings (faucet/drain/sprayer...) to be specified

FIXTURES located on plans & Qty. Fittings identified in schedules!51Electrical & Lighting*...of the MEP info, Elec. + Lighting locations will be in the print set on own sheet / or on floor plan if not too complex a layout.52

53Lighting Layout on plan with furnishings.. ... for more complex lighting layout RCP reflected ceiling plan53Electrical & Lighting*

.Elec. at Rough-in StageElectrical connection to house from source54

Electrical & Lighting Symbols -

on interior Elevationon plan. With Some updates & missing info 55Electricity outlet symbols

Electricity outlet symbols

Electricity symbols

RElectricity outlet symbols

Electricity outlet symbols

Electricity outlet symbols

Electricity lighting symbols

Electricity lighting symbols

Electricity lighting symbols

Electricity lighting symbols

Electricity lighting symbols

Electricity lighting symbols

Electricity lighting symbols

Electricity lighting symbols

Electricity special purpose symbols

Electricity special purpose symbols

Electricity special purpose symbols

Electricity special purpose symbols

Electricity switch symbolsSingle pole switch

Double pole switch

Three way switch

Four way switch

Single pole switch w/ dimmerThree way switch w/dimmer

Lights and outlets in kitchen & bath areas

...similarities from house to house

GFCI ground fault circuit interrupter (outlet for damp locations - near sinks)

GFCI76Outlets & Switches Interior Elevationsregulated by NEC code... walk through the house at the front door looking at outlets and light switches

77code regulates min. number of outlets placed...

NEC National Electrical Code ...work performed by lic. Electrician for occupancy permit

78.Electrical

A ampere =rate of flow V voltage = force ampere move by W wattage = how much elec. Is used or Power use

A x V = W

79.Electrical Amps used to rate appliances

Volts varying pressure at service panel (120/240V typ. for USA house)

Amps to size circuit breaker (Kwh use is elec. measured at meter (or 1000 watt hours = 1 Kwh)

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