Episode 2

25.4mm minimum depth of the shower dam, curb or threshold from the outside floor; shall
not be nailed/perforated

51mm to 228mm (2” to 9”) depth of dam or threshold

2% - 4% slope of floor of the shower receptor

1.2m minimum distance between the door to the drain opening

762mm or 30” minimum diameter of shower

1.78m height that the minimum area and dimensions shall be maintained

76mm for shower receptors built, ___ above the finished dam shall be first lined with sheet
lead or copper

2% lining materials shall be sloped at __ to weep holes

Master thermostatic mixing valve Multiple or gang showers may be controlled by a ____________

Pressure balance valve One handle

48.88⁰ C limit stops for delivery of hot water in a shower

Floor drain Shall be considered as plumbing fixtures

Cross-sectional area of the tailpiece areas of the small holes of the strainer plate are equivalent to ____

Waterway area strainers must have an approved _______

Shower drains waterway equal to area of tailpiece

Wye shall be installed on continuous wastes receiving food waste disposal, dishwasher

Whirlpool bathtub with removable panel. The circulation pump shall be located above the crown weir
of the trap

1 drinking fountain 75 occupants. Occupied floor in schools, theatres, auditoriums, dormitories, offices,
or public building

1 laundry tray or each dwelling

1 automatic washer standpipe

2 laundry trays or 10 apartments

2 automatic washer standpipe

1 lavatory 5 persons in an industrial occupancy where there is exposure to skin contamination

1 laundry tray 50 persons

1 slop sink 100 persons

1 water closet and 1 urinal 30 workingmen in a temporary workmen facility

0.6m in front, sides, & 1.2m above floor ___ of the urinal must be lined with non-absorbent materials

609.6mm wide or 457.2mm diameter circular basin is considered 1 lavatory

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Episode 2
Gauge 16 or 1.6mm thk thickness of restaurant kitchen bonderized and galvanized sheet metal

Gauge 17 or 1.1mm thk thickness for exposed and readily accessible drawn brass tubing trap, excl urine

Gauge 20 or 1.8mm thk thickness for continuous waste and fixture tailpiece – seamless drawn brass

Gauge 24 or 0.5mm thk thickness for copper pans or liners for shower subpans

6.8kg weight of asphalt felt for shower sub-pan materials

19.6kg/m^2 minimum weight of lead pan or liner for shower

water supply and distribution - rnpcp and annex a

water supply system consists of the water service pipe, water supply line, water distributing pipes,
fittings, valves, and all appurtenances required for the supply of potable water

water main water supply pipe for public or community use (street main)

service pipe pipe from the street water main the building served

building supply the pipe carrying potable water from the water meter or other source of water
supply to a building or other point of use (water service connection)

water distributing pipe conveys potable water from the building supply pipe to the plumbing fixture

riser a water supply pipe extending vertically to one full story or more

fixture branch pipe between the fixture supply pipe and the water-distributing pipe

fixture supply pipe connecting the fixture with the fixture branch

0.3m min. depth of water service yard piping below the finish ground level

0.3m min. horizontal distance between sewer or drain line and water line

0.3m water pipes crossing sewer or drainage piping constructed of clary or materials not
approved for use within a building, shall be laid a minimum of __ above the sewer

8% maximum lead content in water pipes and fittings

103 kpa or 15 psi minimum water supply pressure that should be reached, otherwise, an elevated
tank or booster pump must be installed

551 kpa if pressure is in excess of ___ pressure regulator preceded by an adequately sized
strainer shall be installed

1033 kpa maximum pressure setting of pressure relief valve

80% all pipe size determinations shall be based on ___ of reduced pressure

103.42 kpa minimum pressure for a group containing flushometer valves

55.16 kpa minimum pressure for a group containing flush tanks

9.79 multiplier to the elevation in meters to arrive at the loss in static pressure

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Episode 2
75% may be used as multiplier to hot water supply when combining hot and cold-water
demand

3m/sec maximum velocity given in the appropriate installation standard

standpipe a vertical pipe or reservoir into which water is pumped to give it at a head

wet standpipe water pressure is maintained at all times

automatic standpipe operated automatically by opening a hose valve

manually-operated standpipe remote control device at each hose station

dry standpipe having no permanent water inside the standpipe

cpvc may be used for hot and cold-water distribution in a building

up to 51mm cast iron fittings shall be galvanized

small sized malleable iron. all _____ water fittings shall be galvanized

expansion tank ___ for thermal expansion shall be installed whenever building supply pressure is
greater than required relief valve pressure setting

0.15 to 0.60m height of end of pipe with relief valves above ground

drainpipe shall not be trapped

terminal end ___ of drain pipe shall not be threaded nor capped

CT & PRV combination temperature and pressure relief valve shall be installed on the water
heating device

0.3m maximum distance of unions away from regulating equipment, water heater,
conditioning tank

expansion tank for thermal expansion shall be installed whenever building supply pressure is
greater than required relief valve pressure setting

air gap (water dist.) an unobstructed vertical distance through the free atmosphere between the lowest
opening from any pipe or faucet conveying potable water to the flood-level rim of
any tank. minimum is 25mm

air gap (drainage) unobstructed vertical distance through the free atmosphere between the lowest
opening from any pipe conveying waste to the flood level rim of the receptor

air break a physical separation which may be a low inlet into the indirect waste receptor from
the fixture, appliance or device indirectly connected

150mm atmospheric vacuum breakers must be placed ___ above flood level rim

atmospheric vacuum breaker consists of body, checking member, atmospheric opening

double check valve consists of 2 independently acting internally or externally loaded check valves, 4
properly located test cocks with connections, 2 isolation gate valves

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Episode 2
30.5cm or 305mm double check valve backflow prevention assembly (dc) requires ___ minimum
clearance at bottom for maintenance

pressure vacuum breaker consists of loaded air inlet valve, internally loaded check valve, 2 properly located
test cocks, 2 isolation gate valves

30.5cm or 305mm above all downstream piping and flood level rim of receptor

reduced pressure consists of 2 independently acting internally loaded check valves, differential prv, 4
properly located test cock, 2 isolation gv

spill-proof pressure type vacuum breaker closes the vent prior to the check opening and can be used indoors

152mm above all downstream piping and flood rim of receptor

1.52m installations elevated more than ___ above floor shall have permanent platform for
tester and maintenance person

2 pipe dia. or 25mm air gap from supply outlet to top surface of the drainage

152mm or 6” installation of atm vacuum breaker above flood level rim (all avb height

43.3 c minimum temp. for a backflow prevention for hot water to operate

25mm minimum air gap not affected by side wall for lavatories with eo greater than 13mm

38mm minimum air gap affected by side wall for lavatories with eo greater than 13mm

38mm min air gap not affected by side wall for sinks, laundry trays, with eo not greater
than 19mm

57mm min air gap affected by side wall for sinks, laundry trays, w/ eo not greater than
19mm

51mm min air gap not affected by side wall for over rim bath fillers with eo not greater
than 25mm

76mm min air gap affected by side wall for over rim bath fillers w/ eo not greater than
25mm

2 x the eo minimum air gap not affected by side wall for eo not greater than 25mm

3 x the eo minimum air gap affected by side wall for eo not greater than 25mm

backflow the flow of water or other liquids into the distributing pipes of a potable supply of
water from any source other than its intended source

backflow connection condition or any arrangement whereby reverse flow can occur

backpressure backflow occurs due to an increased reverse pressure above the supply pressure

backflow preventer device or means to prevent flow of liquid from returning to the source or supply.
also called vacuum breaker

cross-connection connection that enables non-potable water to enter any part of potable water
system
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Episode 2
siphonage a suction created by the flow of liquids in pipes pressure less than atmospheric

back-siphonage flowing back of used, contaminated or polluted water into a water supply due to
negative pressure

vacuum an air pressure less than atmospheric, implies siphonage in the piping system

corporation cock a stop valve placed at the connection of the water service pipe to the water main

ball cock valve opened and closed by the fall of a ball floating on the surface of liquid

gate valve disc perpendicular/right angle, full bore

globe valve horizontal disc, parallel to direction of water

check valve valve that automatically closes to prevent flow of liquid or gas in a reverse direction.
drainage and water supply

backwater valve device installed in. drainage system to prevent reverse flow

regulating equipment include all valves and controls used in plumbing systems

blow-off a controlled outlet of a pipeline to discharge liquid or detritus

boiler blow-off a valved outlet of a boiler that permits discharge of accumulated sediment

fullway gate valve shall be installed on the discharge of each water meter, more than 1 family, two or
more opening

control gate valve automatic metering valve which supplies a battery of fixtures

gmc gate valve, water meter, check valve

y-strainer designed to protect downstream from particles that are not frequently present in
the application

basket strainer ideal for liquid applications requiring high flow capacity. large filtering part.

return bend vent pipe gravity tanks shall be covered with ___. screen shall have 14-18 mesh per 25mm

float valve must control the potable water inlets to gravity tanks

valved drain pipe and overflow pipe gravity tanks shall be provided with __ and __

19mm minimum building water service pipe

40 FU for water closet with 1 flushometer valve

20 FU for urinal with 1 flushometer valve

70 FU for water closet with 2 flushometer valve

35 FU for urinal with 2 flushometer valve

90 FU for water closet with 3 flushometer valve

45 FU for urinal with 3 flushometer valve

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Episode 2
105 FU for water closet with 4 flushometer valve

53 FU for urinal with 4 flushometer valve

115 + 10 for addtl fixture FU for water closet with 5 or more flushometer

58 + 5 for addtl fixture FU for urinal with 5 or more flushometer

DRAINAGE AND SEWER

Drainage system convey sewage or other liquid wastes to a legal point of disposal

Sewerage or sewerage works for collection, transpo, pumping, treatment, and final disposition of sewage

Durham system all pipings are of threaded pipe, tubing, or using recessed drainage fittings

Drain a pipe which carries ground and surface waters, storm water, or wastewater into a
building drainage system

Tables for memorizations

Water closets – memorize Assembly places, offices, school, worship places. Memorize footnotes

excreta and storm drainage systems disposal of sewage must be through an approved ____

2% or 20mm/m slope between manholes

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Episode 2
1% or 10mm/m allowed slope due to following constraints: 1. excessive depth of proposed drainage
line, 2. structural and geological features of terrain, 3. existing adverse in
arrangements of building

60 deg, 45, 22&½ and

other approved for longer sweep allowable changes in direction of drainage

soil pipe conveys the discharge of the water closet or urinal (black water/fecal matter) also
called fixture drain

soil stack pipe conveying fecal matter and wastewater, vertical

waste pipe conveys wastewater or liquid waste. free of fecal matter (grey water)

fixture drain the drainpipe from the trap of a fixture to the junction of that drain with any other
drainpipe (also called trap arm)

pump, check valve, gate valve pcg

Horizontal branch a drain pipe extending laterally from a soil or waste stack or building drain

primary branch the single sloping drain from the base of a stack to its junction with the main
building drain

secondary branch any branch in a building drain other than the primary branch

sump receives sewage or wastewater and below the normal grade of the gravity system.
needed protection for fixtures located below the crown level of the main sewer. also
called receiving tank

backwater valve a device installed in a drainage system to prevent reverse flow. needed protection
for drainage piping below the elevation of the nearby upstream manhole invert

50.8mm diameter minimum size of any pump discharge from a sump serving a water closet.

Backwater/swing check valve/gate valve needed for vertical discharge line from ejector to a horizontal drainline

discharge side gate valve shall be located at the ___ of the backwater or check valve

2 FU allowed for each 0.063 L/s of flow or each GPM flow

2.4m distance of suds-producing fixtures in a horizontal drainage connected to a stack

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Episode 2
38mm O.D. minimum dimension of tailpiece, continuous waste, and overflow for sinks,
dishwashers, laundry tubs, bathtubs, urinals

32mm O.D. minimum dimension of tailpiece, continuous waste and overflow for lavatories,
drinking fountains

6 fixture units Clothes washers in groups of 3 or more shall be rated at __ FU each for the common
horizontal and vertical waste pipe

6 fu water closets shall be computed as __ when determining septic tank size

2 fu for continuous flow such as from sump pump or ejector, air conditioning equipment,
__ shall be allowed for every .63l/s of flow

.063 l/s 1 gpm in l/s

upper terminal location of cleanout in horizontal drainage

15m location of cleanout at each run of piping more than __ and every __

sinks or urinals cleanout may be omitted on horizontal drain line less than 1.5m except for __

72 deg or less cleanout may be omitted on short horizontal drainage pipe installed at a slope of __
from the vertical line

51mm or less cleanouts need clearance of 305mm in front of the cleanout

larger than 51mm cleanouts needs clearance of 450mm in front of the cleanout

0.45m vertical and 0.75m horizontal clearance needed for cleanouts in underfloor piping

6.1m max. distance of underfloor cleanout from an access door, trap door or crawl hole

sewer a pipe or conduit for carrying sewage (black water) and wastewater (grey water)

sanitary sewer receives sanitary sewage with or without pre-treated industrial wastes and without
the admixture of rain or groundwater

building sewer starts from the end of the building drain and conveys it to a public sewer, private
sewer, individual sewage disposal system or other point of disposal

house sewer extending from the house drain at a point 0.60m from the outside face of the
foundation wall of a building

building drain receives the discharge from inside the walls of the building and conveys it to the
building sewer beginning 0.6m outside the building wall

house drain receives the discharge from a building and conveys it to the house sewer outside of
the building

public sewer a common sewer directly controlled by public authority

private sewer. a building sewer which receives the discharge from more than one building drain
and conveys it to a point of disposal

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Episode 2
lateral in plumbing, a secondary pipeline. in sewerage, a common sewer to which no other
branch sewer is connected

mobile home park sewer 0.6m downstream from the last mobile home site

manhole opening in a sewer line for a man to gain access for maintenance

independent connection every building shall have an __ with a private or public sewer

private sewage disposal if there is not public sewer, the building shall be connected to a ___

61m if the public sewer is more than __ away from the building, the public sewer is
considered not being available

150mm minimum building sewer size

2% or 21mm/m recommended slope of building sewer

1% or 10.5mm/m allowable for 102mm and 152.4mm diameter

0.5% or 5.3mm/m allowable for 203mm and larger

0.6m distance of building sewer from the outer face of any building foundation or wall

0.3m depth of building sewer below the finish surface of ground

0.3m vertical clearance bottom of water pipe to top of sewer drain, horizontal distance
water pipe to sewer, vertical distance water pipe crossing sewer

3m distance of water pipe joints away from sewer line

7.6m allowable reduction in distance when drainage piping is construction of materials

approved for use within a building

15.2 min. horizontal distance from building sewer to water supply wells or streams

0.3m min. horizontal distance from building sewer to domestic water service line and
public water main

135 deg aggregate offset additional cleanout every __

90 deg each __ cleanout extension shall be extended from a wye type fitting

two-way cleanout may be substituted for an upper terminal cleanout

91m max distance bet. manholes

0.3m min. distance of flexible compression joints outside of the manhole, as connections
for the inlet and outlet pipe

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Episode 2

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