2 - Plumbing Code (copy)

Rusting

Not a weakness of aluminum pipe.

Branch interval length

Correlates to a story height no less than 2.43 m.

Best course of action for cracked water closet bowl

Replace the water closet.

Fixture materials for water closets

Shall be dense, durable, and non-absorbent.

Porcelain enamel for water closets

Must be acid-resistant.

Public water closets

Shall be elongated with open-front seats.

Macerating toilet

Also known as an upflush toilet, consists of high-powered blades.

Distance from center to side of a water closet or bidet

0.375 m.

Distance of water closet centers

0.75 m from center to center.

Closet flange diameter

178 mm.

Closet flange width

38 mm.

Minimum thickness of caulked-on closet rings

6.4 mm.

Minimum depth of caulked-on closet rings

51 mm.

Number of closet rings and bolts used

4 closet rings and bolts.

Distance from urinal center to sidewall

0.3 m.

Distance of urinal center to center

0.6 m.

Vacuum breaker function

Protects water supply to a urinal.

Minimum shower dam depth from outside floor

25.4 mm.

Depth of dam (zocalo)

51 to 228 mm.

Shower receptor floor slope

2% to 4%.

Minimum shower diameter

762 mm.

Minimum interior area of a shower

0.6 sqm.

Height that minimum area and dimensions are maintained

1.78 m.

Minimum door width for showers

559 mm.

Lining above finished dam

76 mm above lined with sheet lead or copper.

Slope of lining materials to weep holes

2%.

Extension of folds and laps

101 m of folds, laps, and reinforcing webbing.

Drains in gutters

Should be spaced apart 4.9 m.

Master thermostatic mixing valve

Controls multiple or gang showers.

Hot water delivery limit

48.88 C.

Small holes in drain area

Equal to area of tailpiece.

Wye connection

Installed on continuous wastes receiving food waste disposal, dishwashers, clothes washers.

Dishwasher drain connection rule

No connection to sink tailpiece or continuous waste on discharge side of food waste disposal.

Drinking fountain installation rule

Shall not be installed inside public toilet rooms.

Browne and Sharpe gauge standard for sinks

Gauge 16 / 1.6 mm thick for restaurant kitchen sinks.

Gauge used for drawn brass tubing trap

Gauge 17 / 1.1 mm.

Thickness of seamless drawn brass tailpiece

Gauge 20 / 0.8 mm.

Thickness of copper pans or liners

Gauge 24 / 0.5 mm.

Weight of asphalt felt for shower

6.8 kg.

Minimum weight of lead pan

19.6 kg/m².

Water Supply System components

Consists of service pipe, supply line, distributing pipe, fittings, and valves.

Water treatment device function

Conditions or treats water supply to improve water quality.

Minimum height for installations elevated above floor

1.52 m; requires permanent platform for testers and maintenance.

Air gap specifications

2 pipe diameters or minimum 25 mm from supply outlet to drainage top surface.

Atmospheric vacuum breaker installation rule

6 in above flood level rim.

Backflow prevention for hot water

Should be listed type operative for a minimum of 43.3 C.

Depth of water service yard piping

0.3 m below the finished ground level.

Minimum water supply pressure requirement

15 psi; otherwise, install elevated tank or booster pump.

Maximum pressure setting for pressure release valve

150 psi.

Pressure regulator requirement

If pressure is in excess of 80 psi.

Basis for pipe size determinations

80% of the reduced pressure.

Expansion tank function

Required for thermal expansion when building supply pressure exceeds relief valve pressure setting.

Maximum distance of unions from regulating equipment

0.3 m.

Height range for end of pipe with relief valves above the ground

0.15 m to 0.60 m.

Combination temperature and pressure relief valve installation rule

Shall be installed on water heating device.

Backflow definition

Flow of water or other substances back into potable water supply from another source.

Backpressure backflow scenario

Due to increased reverse pressure above supply pressure.

Backflow preventer function

Prevents flow of liquid from returning to the source of supply.

Cross-connection definition

Enables non-potable or contaminated water to enter potable supply.

Back-siphonage

Flow of used water back into supply due to negative pressure.

Air gap in drainage

Unobstructed vertical distance from waste conveyance to flood level rim.

Air gap in water distribution

Unobstructed vertical distance for conveying potable water to flood level rim.

Airbreak definition

Physical separation preventing indirect waste entry from the fixture.

Atmospheric vacuum breakers (AVB) placement rule

150 mm above flood level rim.

Pressure vacuum breaker (PVB) components

Includes air inlet valve, check valve, test cocks, isolation valves.

Double check valve (DC) clearance requirement

305 mm minimum clearance for maintenance.

Reduced pressure principle (RP) components

Includes check valves, isolation valves, test cocks, differential pressure relief valve.

Spill-proof pressure type function

Closes the vent prior to check opening.

Corporation cock definition

Stop valve at connection of water service pipe to water main.

Gate valve operation

Cuts off flow with circular disc at right angles to flow direction.

Globe valve operation

Cuts off flow with circular disc over horizontal direction of flow.

Backwater valve purpose

Prevents reverse flow in drainage systems.

Check valve function

Automatically closes to prevent reverse flow of liquid or gas.

Ball cock functionality

Valve operated by a ball floating on liquid surface.

Regularing equipment definition

All valves and controls in plumbing systems.

Blow-off valve definition

Controlled outlet to discharge liquid or detritus from a pipeline.

Boiler blow-off definition

Outlet permitting discharge of sediment from a boiler.

Y-strainer purpose

Protects downstream equipment from particles not frequently present.

Basket strainer functionality

Ideal for high-flow applications requiring larger particle holding capacity.

Drainage system definition

Conveys sewage or other liquid wastes to a disposal point.

Sewerage works definition

Includes construction for collection, transportation, and treatment of sewage.

Minimum slope between manholes

2% or 20 mm/m.

Allowable drainage direction changes

60 deg, 45 deg, 22.5 deg.

Vitrified clay pipes

Prone to root infiltration.

Soil pipe function

Conveys discharge from water closet or urinal (blackwater).

Soil stack pipe definition

Vertical pipe conveying fecal matter and wastewater.

Waste pipe function

Carries only wastewater or liquid waste without fecal matter (grey water).

Fixture drain definition

Drainage from the trap of a fixture to junction with drain.

Horizontal branch definition

Drain pipe extending laterally from soil or waste stack.

Primary branch definition

Single sloping drain from base of a stack to main building drain junction.

Secondary branch definition

Any branch in a building other than the primary branch.

Sump definition

Tank or pit receiving sewage or wastewater below gravity system level.

Backwater valve protection,

Required for drainage piping below elevation of upstream manhole invert.

Minimum pump discharge size from sump serving water closet

50.8 mm diameter.

Minimum dimension of tailpiece for sinks

38 mm OD.

Minimum dimension of tailpiece for lavatories

32 mm OD.

Sewer definition

Pipe for carrying sewage (black water) and wastewater (grey water).

Sanitary sewer definition

Receives sanitary sewage without water admixture.

Building sewer definition

Starts from end of building drain, conveys to disposal point.

House sewer definition

Extends from house drain 0.6 m from foundation wall.