(c) NDJ 2023
REVIEWER
ANSWER
QUESTION
is strong, rigid, and economical. It resists a wide range of
Polyvinyl chloride (PVC) acids and bases but may be damaged by some solvents
and chlorinated hydrocarbons.
140◦F (60◦C)
maximum service temperature of PVC
Acrylonitrile-butadiene- it is limited to 160◦F (71.1◦C) water temperatures at lower pressures, which is considered adequate
for DWV use.
styrene (ABS)
Chlorinated polyvinyl
This meets national standards for piping 180◦F (82.2◦C) water at pressures of up to 100 psi (689
chloride (CPVC)
kPa)
CPVC can withstand how much water temparature for limited periods
200◦F (93.3◦C)
Polyethylene (PE)
Polybutylene (PB)
Compressiontype joints
Polypropylene
180◦F (82.2◦C)
Kem-Temp
polyvinylidene fluoride
(PVDF)
280◦F (138◦C)
2 inches (50.8 mm)
This is a flexible pipe for pressure systems. Like PVC, it cannot be used for hot-water systems.
This is flexible and can be used for either hot-water or cold-water pressure systems. Since no
method has been found to chemically bond , solvent-weld joints cannot be used
what are used to bond PB pipes?
This is a very lightweight material suitable for lower-pressure applications.It is used widely for
industrial and laboratory drainage acids, bases, and many solvents.
maximum service temperature of Polypropylene Pipes
This is a strong, tough, and abrasive-resistant fluorocarbon material. It has excellent chemical
resistance to most acids, bases, and organic solvents and is ideally suited for handling wet or dry
chloride, bromine, and other halogens.
maximum service temperature of PVDF
PVC Type 1–100 feet (30.5 meters) operating at 140◦ F(60◦C) will expand approximately
31/4 inches (82.55 mm) Polypropylene and PVDF at the same temperature will expand approximately
natural bristle or nylon
Cement is applied with
brush
is considered a safe period for the piping system to be allowed to stand vented to the atmosphere
before pressure testing. Shorter periods may be satisfactory
for high air temperatures, small sizes of pipe, quick-drying cement, and tight dry-fit joints.
48 hours
PVC solvent cements are available in two general viscosity categories: light and standard. The
light cements are intended for use with pipes and fittings up through _______and for pipes and
2 inches (50.8 mm)
fittings where interface fits occur
between the parts to be joined.
N.P.S.
National Sanitation
Meaning of NSF;
Foundation
min. lengthof metal pipe is recommended on both hot- and cold-water lines above the tank before
converting to CPVC.
12 inches (304.8 mm)
are used to connect the CPVC to the metal pipe risers.
Transition unions
tubing may be used for the relief line to a point 6 inches (152.4 mm) above the floor. The relief line
must be the same size as the outlet of the relief valve.
CPVC
3 feet (914.4 mm) in runs
longer than 3 feet (914.4
CPVC tubing should be supported at least every
mm).
Plastic pipe lighter than this should not be threaded.
Schedule 80
resists corrosion, freezing, rust, acidic soils, and scale buildup. It will not burst when frozen and
withstands temperatures of 180◦F (82.2◦C) at 100 psi (689
kPa). It is also unaffected by freezing; should be stored out of direct sunlight because it is
susceptible to ultraviolet attack
Polybutylene pipe
Water pressure in the water supply system is normally about
50 psi
9. Romans 8:28
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(c) NDJ 2023
Cast Iron Soil Pipe
Institute
48 (nor more than 60)
inch-lbs
(67.79 N-m) of torque.
3/32 inch (2.38 mm).
ARC tube
Plumbing tube
1/8 inch (0.32 cm)
Drawn tube
Annealed Tube
Capillary Joints
2 inches greater
the side of the heater
near the bottom
the top of the water
heater
210◦F (98.9◦C)
130°f (54°c)
diaphragm expansion
tank
closed-loop system
heater-mounted
differential controller
32◦F to 212◦F
Absolute pressure
140˚F to 160˚F
(60˚Cto71˚C
CISPI stands for
The stainless steel bands for hubless cast iron pipes must be tightened alternately
and firmly to not less than
spacer inside neoprene gasket where fittings of pipe ends meet.
is a copper pipe used for air-conditioning and refrigeration.
is a copper pipe which includes types K, L, M, and DWV.
Types K, L, M, and DWV come in standard sizes with the outside diameter always_________
larger than the standard size.
is a hard copper tube; can be joined by soldering or welding.
is always a soft copper tube.
joints rely on a seal of molten and then cooled solder.
location of the drain pan from the water heater. ___ greater than the length and width of the water
heater.
The water heater inlet is located on_________
the water heater outlet is located on_________
The temperature setting of the relief valve should not exceed_______.
Water temp. above______may cause scalding
is provided on top of the heater to handle the expansion of heat-transfer fluid in a
closed-loop circulating line.
is used for transfer of the heated solution and return.
has a modulating output to collect the maximum amount of available heat from
collector panels, even on cloudy days. The pump is adjustable for flow with a restrictor that makes
this solar system flexible for various installations.
Water in a heating system, when heated from (0 ◦C to 100◦C) will expand approximately 1/23 of its
original volume.
gage pressure plus atmospheric pressure.
The maximum acceptable temperature for domestic hot water is from
Temperatures above _____ are not recommended, because they cause increased corrosion,
increased deposit of lime, waste of fuel, more rapid heat loss by radiation, scalding, and other
accidents.
160◦F (71◦C)
If hot-water pipes are insulated, the heat loss from pipes
is reduced by up to__________
80 percent
anode rod/protector rod is used to prevent corrosion in some water heaters.
1 inch (25mm)
Storage tanks up to 82 gal. (310.4) liters are tapped for_________
connections
Tanks over that size are tapped for a minimum_____________
1-1/4" (32mm)
when water solidifies it becomes
lighter
The amount of heat required to change ice to liquid water
144 BTU/ 335J/kg
Are sold and ordered by their OD measurement
Flare fittings
contain 85% copper, 5% zinc, 5% tin, 5% lead
Brass fittings
space entirely devoid of matter
Vacuum
a space where and air pressure exists is less than the atmospheric pressure.
Partial Vacuum
should be installed on a copper tank to prevent collapse in the event of a vacuum occurrence.
Vacuum Relief Valve
6 inch/15cm, 6 inch/15
a vacuum breaker should be atleast______above the flood level rim or _______above the top of
the unit.
cm
have a machined seat and a composition disk and usually off tight. Have more flow resistance than
gate valves.
Globe valves
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(c) NDJ 2023
Gate Valves
Electrolysis
12 inches(305mm)
check valve
one fourth
16 feet (4.88 m )
8 feet (2.44 m )
4 feet (1.22m)
75 feet(23m)
150 sq. feet(14 sqm): 1
inch2
Hygrometer
Friction clamp
asphaltum
washerless valve
90F -100F
lift stations
wet-well installation
dry-well installations
Impeller
Submersible axial flow
pumps
12 inches (305mm)
80 psi (552 kpa)
1935
City Ordinance 2411
June 18, 1955
1966-1969
November 28, 1967
(6) sets
Two (2) sets
1 set
may leak slightly when closed (particularly if frequently operated) because of the wear between the
brass gates and the faces against which they operate.
when copper and steel contact each other, especially when dampness is present, this chemical
reaction occurs.
a relief line from a relief valve is generally piped to the outside,_________ or less above ground
level, elbow and nipple turned down.
Never install this valve to a water heater because it would confine pressure in the tank and result in
an accident if the relief valve did not operate.
when using a ladder, place the ladder base____ of the ladder length away from which the ladder is
leaning.
maximum height for horses supporting scaffold platforms.
vertical braces should be located at every_____
Horizontal stringers in good soil conditions should be placed every_______
The maximum spacing for rainwater leaders(downspouts)
the recommended standard for roof leader area to roof area ratio
the instrument for measuring the relative humidity.
for use with brass pipe in a regular pipe vise is made by cutting a pipe coupling in half lengthwise
and then lining it with sheet metal.
protects the lead from corrosion during the curing period of concrete caused by a chemical reaction
that occurs between concrete, lead, and the water seeping through and contacting both.
the secret behind the no-drip features of faucets
The typical temperature fo a comfortable bath.
Pumping stations are built when sewage must be raised from a low point to a point of higher
elevation, or where the topography prevents downhill gravity flow. Special nonclogging pumps are
available to handle raw sewage. They are installed in structures called
has only one chamber or tank to receive and hold the sewage until it is pumped out.
have two separate chambers, one to receive the wastewater and one to enclose and protect the
pumps and controls. The protective dry chamber allows easy access for inspection and
maintenance.
This is the most important single part of the sewage pump.
are for direct installation in the discharge pipes. These save space and installation costs. They are
intended for large flows and moderate heads for storm water, land drainage, and flood protection.
pipes more than____diameter are classified by their OD.
a pressure regulator must be installed
NATIONAL PLUMBING CODE OF THE PHILIPPINES RA 1378
NAMPAP was registered
Plumbing code for the city of Manila
R.A. 1378, otherwise known as the "PLUMBING LAW OF THE PHILIPPINES" was signed by
President Ramon Magsaysay
the Board of Examiners for Master Plumbers and the NAMPAP prepared a Cuniculum for Plumbing
Engineering that was approved by the Department of Education and was first introduced at the
Feati University.
the First Amendment to the National Plumbing Code was approved, which effected the inclusion of
"Asbestos·Cement Pipe" as an approved plumbing material .
All plumbing plans, drawings. diagrams, design analyses/computations as required, technical
sp~cifications, bills of materials and other required documents for all types ofoccupancy shall be
prepared, signed and sealed by a Registered and Licensed Master Plumber. without limitations
pursuant to Republic Act 1378, as amended and shall be submitted in______________of the
aforementioned requirements with each application for a permit.
shall be returned to the applicant and owner.
shall be kept at the jobsite at all times while work is in progress.
9. Romans 8:28
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(c) NDJ 2023
120 days
A plumbing permit issued under the provisions of this Code shall expire and become null and void if
the plumbing work authorized therein is not commenced within one year from the date of such
permit or ifthe plumbing work so authorized is suspended or abandoned at any time after having
been commenced for a period of_______
in case of renewal of a plumbing permit, a fee equivalent to______of the original fee shall be paid.
any public space, public park or thoroughfare less than three (3) meters but not less than two
(2) meters in width dedicated or deeded for public use.
alley
a physical separation. which may be a low inlet into the indirect waste receptor from the fixture,
appliance or device indirectly connected .
AIRBREAK
the part of a vent line, which connects directly with an individual trap underneath or behind the
fixture and extends to the branch or main vent pipe at any point higher than the fixture or fixture
traps it serves. This is sometimes called an individual vent. See Revent pipe.
BACKVENT PIPE
BENDING PIN (or IRON) a tool for straightening or bending lead pipe.
A flange that is not drilled for bolt holes.
BLANK FLANGE
A flange that closes the end of a pipe.
BLIND FLANGE
A controlled outlet of a pipeline to discharge liquid or deritus.
BLOW-OFF
a valved outlet of a boiler that permits discharge of accumulated sediment.
BOILER BLOW-OFF
a length of soil or waste stack corresponding in general to a story height but in no case less than
2.43 meters within which the horizontal branches from one floor or story of a building are connected
to the stack.
BRANCH INTERVAL
any joint obtained by joining metal parts within alloys which melt at temperatures higher than 449
degrees centigrade, but lower than the melting temperature of the parts to be joined.
BRAZED JOINT
that part of the lowest horizontal piping of a drainage system which receives the discharge from
soil, waste and other drainage pipes inside the walls of the building and conveys it to the building
sewer beginning 0.6 meter outside the building wall.
BUILDING DRAIN
a structure which any part of its structural framework will ignite and burn at a temperature of
7_________.
756 centigrade or less
a room or space having a volume less trhan 1.4 cu.m with 250 kg. calorie of the aggreagte input
rating of all fuel burning appliacnes installed in that space.
CONFINED SPACE
28.3 liters/min.
Fixture unit.
1cu.ft/min
a valve in which the flow of water is cut off by means of a circular disc fitted against machinesmoothed faces, at right angles to the direction of flow. The disc is raised or lowered by means of
a threaded stem connected to the handle of the valve. The opening in the valve is usually as large
as the full bore of the pipe.
GATE VALVE
one-half the amount
GLOBE VALVE
INTERCEPTOR
(CLARIFIER)
PB - Polybutylene
PE - Polyethylene
PVC
REGULATING
EQUIPMENT
a valve in which the low of liquid is cut off by means of a circular disc fits over and against the
horizontal valve seat. The movement of the plane of disc is parallel to the normal direction of flow
of water through the orifice resulting to a tortous passage which offers a high pressure loss.
is a device designed and installed to separate and retain deleterious, hazardous or undesirable
matters from normal wastes and permits normal sewage or liquid wastes to discharge into the
disposal terminal by gravity.
Tube made of plastic material and colored black. The cross-sectional shape is normally oval and
is denoted by its outside diameter or O.D. Normally used as water service connection from
main to meter.
tube made of plastic material and colored black. The cross-sectional shape is circular and is
denoted by its outside diameter or O.D.
Polyvinyl Chloride. Potable water pipings are color-coded blue. Drainpipes are manufactured with
toxic components are color-coded gray, orange or brown.
include all valves and controls used in plumbing systems which are accessible.
9. Romans 8:28
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(c) NDJ 2023
SOLDERED JOINT
UNCONFINED SPACE
UNIT VENT
20mm/m (2%)
10mm/m (1%)
22 1/2 or 1/16 bend, 45
bend, 60 or 1/6 bend
a pipe joint obtained by joining metal parts with metallic mixtures or alloys which melt at a
temperature below 427 degrees centigrade and above 149 degrees centigrade.
a room space having a volume equal to atleast 1.4 cu.m of the aggregate input rating of the fuelburning appliance installed at that space.
an arrangement of venting so installed that one vent pipe will serve (2) traps.
Horizontal drainage pipes shall run in practical alignments and at a uniform slope between
manholes not less than_______ toward the point of disposal.
Existing adverse in arrangement so building or structure; any such piping 102mm or larger in
diameter may have a slope of ______ provided it is first approved by the administrative authority.
Changes in direction of drainage piping shall be made by the use of approved pipe fittings and shall
be of the angles presented by a ________,__________,__________ or other approved fittings for
longer sweeps.
45° or 60° wye branches,
combination wye and 1/8
bend branches, sanitary
tee or other approved
fittings of longer
Horizontal drainage lines connecting to a vertical stack shall enter through
_____________________________.
sweeps.
Vertical installation of double sanitary tees for the changes in direction of drainage flow may be
used when the barrel of the fitting is atleast __pipe sizes larger than the largest size inlet.
2 pipe sizes
45° wye branches,
combination wye and 1/8
bend branches or
other approved fittings
Horizontal drainage lines connecting to other horizontal drainage lines shall enter through.
of longer sweeps.
45-degree branches, or
other approved fittings
Vertical drainage lines connecting to horizontal drainage lines shall enter through.
of longer sweep
60 degree branches or
may be used only when installed in a true vertical position.
offsets
Prohibited fittings and practices:
1 DOUBLE HUB FITTING FOR LEAD-CAULKED JOINT IN A VERTICAL POSITION,
2 SINGLE OR DOUBLE TEE BRANCH
3 SINGLE OR DOUBLE TAPPED TEE BRANCH
4 SIDE INLET QUARTER BEND
5 RUNNING THREAD
6 BAND OR SADDLE
DRILLED AND TAPPED No drainage or vent piping shall be ______ for making connections thereto
THREADED
No cast iron pipings shall be___________
The enlargement of a ______ closet bend or stub to _______ diameter shall not be considered and
obstruction.
76mm, 102mm
Void between pipes and sleeves through concrete floors in the ground shall be appropriately sealed
with________.
Bitumen
The bottom of all pipe trenches deeper than the footing of any adjacent
building or structure and parallel to it must be at least_________therefrom, unless permission is
granted by the administrative authority.
45 degrees
No building sewer or other drainage pipings or part thereof, constructed of materials other than that
approved for use under or within _______ of any building or structure, nor less than ___ meter
below the finish ground surface.
0.6 meter, 0.3 meter
every other storey or
Cast iron soil pipe-bell & spigot and hubless pipe shall be supported at
closer
9. Romans 8:28
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(c) NDJ 2023
every other storey
Iron pipe size (IPS) shall be supported at not less than
height
each storey or, 3 meters
Copper tubing shall be supported at _______ or at maximum intrervals of_______.
on center
Lead pipe shall be suppoerted at intervals not exceeding______ at centers with a rigid vertical backup.
1.20 meters
Plastic pipe shall be supported at______
1 meter interval
Cast iron soil pipe horizontal support where joints occus, suspended cast iron pipe shall be
supported at not more than _____meters intervals; except that pipe exceeding ____ meters length
may be supported at not more than ____meter intervals.
1.5m, 1.5m, 3m
Supports shall be adequate to maintain alignment and to prevent sagging and shall be placed
within ___ meters of the hub or joint. (Cast iron soil pipe horizontal support)
0.45
Hubless or compression gasket joints must be supported atleast at every other joint except that
when the developed length betweeen supports exceed ____meters, they shall be provided at each
joint. (Cast iron soil pipe horizontal support)
1.2
Screwed pipe- IPS as provided in the other sections of this code shall be supported at
approximately ___meters intervals for piping 19mm diameter and smaller; ___meters intervals for
pipings 25 mm and larger in diameter.
3.0, 3.6
Copper tubing shall be supported at approximately ___meters intervals for piping 38mm diameter
and smaller and __meters intervals for pipings 51mm and larger in diameter.
LEAD PIPE
Inground piping
PLASTIC TUBE
0.6 meter
One pipe size larger
0.3 meter
acid resistant
Gauge 16 US B&S or
1.6mm thick
Bonderized
Galvanized
0.3
Gauge no. 20 B&S or
0.8mm in thickness
38mm OD
32 mm OD
BRASS OR COPPER
Dishwasher
0.375
Shall be supported by stiff wooden backing for its entire length with hangers properly spaced.
Shall be laid on a firm bed for its entire length, except where concrete cradle support is provided
which is adequate and approved by the administrative authority.
Shall be supported by stiff metal or wood backing with hangers in its entire length for small-size
tubings up to 38 mm diameter and without backings but with spaced metal hangers at approved
spacing for larger size tubings.
Tunnels shall have a clear height of ___meter above the pipe and shall be limited in length to 1/2
of the depth of the trench with a maximum length of 2.4 meters.
When pipe is driven, it shall be atleast one pipe size largerr than the pipe to be laid.
All excavations shall be completely back filled as soon as possible after inspection. Adequate
precaution shall be taken to ensure proper compactness of backfill around pipes without damage to
such pipes. Trenches shall be back-filled in thin layers of _____ above the top of the pipe with
clean earth which shall not contain stones, boulders, cinders or other materials which can damaghe
or break the pipes or cause corrosive action.
All porcelain enamel surfaces on plumbing fixtures shall be_______.
Restaurant kitchen and other special-use sinks may be made of approved type bonderized and
galvanized sheet steel of not less than________.
to be put in phospate solution to avoid corrosion.
coated in protective layer of zinc.
Fixtures having concealed slip joint connections shall have an access panel of not less than___ in
its least dimension.
Continuous waste and fixture taipiece shall be constructed from the materials specified on this
code for drainage piping provided however, that such connections where exposed or accessible
may be of seamless drawn brass not less than ________________ .
Each such tailpiece, continuous waste or waste and overflow shall not be less than____ for sinks
dishwashers, laundry tubs, bathtubs, urinals and similar fixtures.
for lavatories, drinking fountains and similar fixtures.
shall not be used for urinal tailpiece or trap.
No ________ drain shall be connected to a sink tailpiece, continuous waste or trap on the
discharge side of a food waster disposal unit.
No water closet or bidet shall be set closer than ____meter from its center to any side wall or
obstruction;
9. Romans 8:28
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(c) NDJ 2023
0.75
0.3
0.6
more than one urinal
integrally cast waterstop
25.4 mm
51 mm, 228mm
2% or 20mm/m; 4% or
40mm/m
559mm
1.2
Nor closer than ____meter center to center from any similar fixture.
No urinal shall be set closer than ___meter from its center to any sidewall or partition;
Nor closer than _____meter center to center.
No manually controlled flushometer valve shall be used to flush_______ and each such urinal
flushometer valve shall be approved, self-closing type discharding a predetermined quantity of
water.
Floor drains, floor receptors and shower drains shall be of an approved type, the body provided
with _________ outside flange around the body at mid depth and with an inside caulk outlet to
provide a watertight joint in the floor.
Each shower receptor shall be an approved type and be constructed to have a
finished dam, curb or threshold which is at least _______ lower than the outside floor at the sides
and back of such receptor.
ln no case shall any dam or threshold be less than ____ nor more than___ in depth when
measured from the top of the dam or threshold to the of the drain
The finished floor receptor shall slope uniformly from the sides towards the drain not less than
______or more than _____.
Thresholds shall be of sufficient width to accommodate a minimum______wide door.
The minimum distance for wheelchair users between the door or entry to the drain opening shall
be_____meters.
All shower compartments regardless of shape shall have a min. interior area of____ square meter;
And shall be able of encompassing a ______mm diameter circle.
The minimum area and dimensions shall be maintained from a point above the shower drain outlet
to a height of______ with no protrusions other than the fixture valve or valves, shower head and
safety grab bars·or rails.
1.78 meters
When shower receptors are built above ground the sub-floor and rough side of walls to a height of
no less than_______ above the top of the finished dam or threshold shall be first lined with sheet
lead or copper or with other durable and watertight materials.
76mm
All lining materials shall be pitched at a slope of ________ to weep holes in the subdrain of a
smooth and solidly formed sub-base.
2 percent or 20 mm/m
All lining materials shall extend upward on the rough jambs of the shower opening to a point no
less than _____ above the top of the finished dam or threshold and shall extend outward over the
top of the rough threshold and be turned over and fastened on the outside face of both the rough
threshold and the jambs.
76mm
(3) layers of standard
No metallic shower sub-pans or linings may be built-up on the jobsite of not less
than_________asphalt-impregnated roofing telt.
grade 6.8 kg
All folds, laps and reinforcing webbing shall extend to at least ________ in all directions from the
comer and all webbing shall be of approved type and mesh,
producing a tensile strength of not less than 0.9 kg/mm in either direction.
101 mm
Linings shall be properly-recessed and fastened to approved backing so as not to occupy the
space required for the wall covering and shall not be nailed or perforated at any point which may be
less than _____ above the finished dam or threshold.
25.4 mm
Gutters in public or gang shower rooms shall have rounded comers for easy cleaning and shall be
sloped not less than _____ toward the drains
two (2) percent
drains in gutters shall be spaced not more than____apart.
4.9 meters
in the absence of local regulations, showers occupancies other than dwelling units served by
pressure balance or
individual water heaters shall be provided with individual shower control valves of
thermostatic mixing type the__________type
master thermostatic
Multiple or gang showers may be controlled by a _____in lieu of individually controlled pressure
balance or thermostatic mixing valves.
mixing valve
limit stops shall be provided on such valves and shall be adjusted to deliver hot water with a
maximum temperature of_____.
48.88 degrees celsius
0.6
762
9. Romans 8:28
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(c) NDJ 2023
9. 6kg/m2.
Gauge No. 24 B&S
(0.5mm thick)
Burned
Soldered or Brazed
above the crown weir
3
15 minutes
34.5 Kpa;254mm
50 percent
344.5KPa
AVB (Atmospheric
Vacuum Breaker)
DC(Double Check Valve
Backflow Prevention
Assembly)
PVB(Pressure Vacuum
Breaker Backflow
Prevention Assembly)
RP(Reduced Pressure
Principle Backflow
Prevention Assembly)
25mm
38mm
38mm
57mm
51mm
76mm
2x the dia. Of the
effective opening.
3x the dia. Of the
effective opening.
effective opening
0 to 63.5cm
Lead and copper sub-pans or linings shall be installed from all conducting substances other than
their connecting drain by 6.8 kg asphalt felt or its equivalent and no lead pan or liner shall be
constructed of material weighing less than ____.
Thickness of copper pans or liners shall atleast be _______.
Joints in lead pans or liners shall be_____
Joints in copper pans or liners shall be________
the circulation pump shall be located ______of the trap.
If the system is tested in sections, each opening shalt be tightly plugged except the highest opening
of the section under test, and each section shall be filled with water, but no section shall be tested
with less than a___meter head of water.
The water shall be kept in the pipe system or in the portion under test for atleast ____minutes.
the air test shall be made by attaching an air compressor testing apparatus to any suitable
opening, and after closing all other inlets and outlets to the system, air is forced into the pipe
system until there is a uniform gauge pressure of______ or sufficient to balance a column of
mercury _____ in height. The pressure shall be held without introduction of additional air for
atleast 15 minutes.
Water Piping -upon completion of a section or of the entire hot and cold water supply systems, it
shall be tested and proved tight under a water pressure not less than the working pressure under
which it is to be used plus ___%.
A _____air pressure may be substituted for the water test.
consists of a body, a checking member, and an atmospheric opening.
Consists of two independently acting internally or externally loaded check valves, four properly
located test cocks with connectors and two isolation gate valves.
Consists of a loaded air inlet valve, and internally loaded check valve, two properly located test
cocks and two isolation gate valves.
Consists of two independently acting internally loaded check valves, a differential pressure relief
valve, four proprely located test cocks, and two isolation gate valves.
MINIMUM AIR GAPS FOR WATER DISTRIBUTION
Lavatories and other fixtures with effective openings not greater than 13mm in diameter ( not
affected by sidewalls)
Affected by walls
Sinks, laundry trays, gooseneck bath faucets, and other fixtures with effective openings not greater
than 19mm in diameter (not affected by sidewalls)
Affected by sidewalls
Over rim bath fillers and other fixtures with effective openings not greater than 25mm in diameter.
(not affected by side walls)
Affected by sidewalls
Effective openings not greater than 25mm in diameter (not affected by sidewalls)
Affected by sidewalls
shall he the minimum cross-sectional area at the seat of the control valve
or the supply pipe or tubing which feeds the device or outlet If two or more lines supply one outlet,
the _________ shall be the sum of the cross-sectional areas of the individual supply lines or the
area of the single outlet whichever is smaller.
Airgap less than 25mm shall only be approved as a permanent part of a listed assembly that has
been tested under actual backflow conditions with vacuums of from _________mercury
9. Romans 8:28
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(c) NDJ 2023
305 mm
1.52 meters
2; 25 mm
152 mm
43.3 degrees Celsius
152mm
25 mm
25mm
25mm
two separate walls
152mm
152mm
152 mm
DANGER UNSAFE
WATER
51
GALVANIZED
eight(8)
51mm
Access and clearance shall be provided for the required testing, maintenance and repair. Access
and clearance shall require minimum of______ space between the lowest porlion of the assembly
and the grade, floor or platform.
Installations elevated more than _______ above the floor or grade shall be provided with a
permanent platform capable of supporting a tester or maintenance person.
Where potable water is discharged to the drainage system, it
shall be by means of an approved airgap of ____pipe diameters from
the supply outlet and the top surface of the drainage inlet, but in no case
shall the gap be less than ______.
Connection may be made to the inlet side of a trap provided that an approved atmospheric vacuum
breaker is installed no less than____above the flood level rim of such trapped fixture, so that at no
time will any such device be subjected to any back·pressure.
Backflow prevention for hot water over _____ shall be a listed type assembly designed to operate
at a temperature of _____or higher without rendering any assembly inoperative.
The vacuum breaker shall be installed at the discharge side of the flushometer valve with the
critical level at least _____or the distance according to its listing above the overflow rim of a water
closet howl or the highest part of a urinal.
Water Closet and Urinal Tanks shall be equipped with a listed ballcock .The ballcock shall be
installed with the critical level at least ____ above the full opening of the overtlow pipe.
In cases where the ballcock has no hush tube, the bottom of the water supply inlet shall be installed
____ above the full opening of the overllow pipe.
Water closets having the flush valve seat less than___ above the flood level rim of the closet bowl
shall have the ballcock installed in a separate and isolated
compartment of the tank, or provided with a sheathed baJlcock, or other
equivalent protection.
Potable water shall be separated from the fluids or gasses by a minimum of _____________, with
a positive, vented leak detection path.
Inlets to Tanks, Vats, Sumps, Swimming Pools and other receptors when
protected by a listed atmospheric vacuum breaker shall have sucb
atmospheric vacuum breaker installed in the discharge side of the last
valve with the critical level of not less than _____ or in accordance with
its listing above the flood level rim of such equipment, and ail downstream
piping.
Potable Water Outlets with Hose Attachments other than water heater
drains and clothes washer connections shall be protected by a listed non-removable hose-bibb type
vacuum breaker installed at least ______mm above the highest point of usage and located on the
discharge side of the last valve.
Water Inlets to Water Supplied Aspirators shall be equipped with a listed
atmospheric vacuum breaker mounted at least ____ above the aspirator
unit or equipped with a listed backflow preventer installed in accordance
with its listed requirements and this Chapter. The discharge shall drain
through an airgap. When using the tailpiece of a fixture to receive the
discharge of an aspirator, the air gap shall be located above the flood level
rim of the fixture.
Each outlet on the non-potable water line, which may be used for drinking or domestic purposes
shall be posted:
Cast iron fittings up to and including ___mm in size, when used in connection with potable water
piping shall be galvanized.
All small-sized malleable iron water fittings shall be_____
Water pipes and fittings with a lead content that exceed_____percent shall be prohibited and not
be used in potable piping systems.
Valves up to and including _____ in size shall be brass or other approved
materials. Sizes over ____ may have cast iron or brass bodies. Each gate
valve shall be a fullway type with working parts of non-corrosive materials
9. Romans 8:28
9
(c) NDJ 2023
fullway gate valve
fullway gate valve
control gate valves
A single control gate
valve
return vent pipe
float valve, float switch
or electrode-type water
level
103 kPa/14.935Psi
551psi/78.895Psi
80 percent
listed nonstorage instantaneous
heaters
1033 kPa/149.785Psi
0.6m nor less than 152
mm
water pressure relief
valve
CT&PRV
workmanlike manner
0.3m
0.3m
0.3m
0.3m
0.3m
6.895 KPA
4 feet (1219mm)
3 feet (914mm)
1/4" (6.4mm)
A ________controlling all outlets shall be installed on the discharge side of each water meter and
on each unmetered water supply; shall be installed on the cold water supply pipe to each water
heater; shall eb installed for each apartment or dwelling occupied by more than one family; shall be
installed on the discharge piping from water supply tanks or near the tank.
A valve used to control two (2) or more openings shall be a ________
shall be installed before each water-supplied appliance, slip joint, supply pipings for non-metallic
fixture and appliance.
shall he installed in a water supply line ahead of any automatic metering valve which supplies a
battery of fixtures.
The covers of gravity tanks shall be vented with a _________ having an area not less than the area
of the down-feed riser pipe, and the vent shall be screened with a fine corrosion-resistant screen
with openings not less than 14 nor more than 18 mess per 25 mm.
Potable water inlets to gravity tanks shall be controlled by a _______________control to prevent
the tank from overflowing.
inadequate water pressure
excessive water pressure
All pipe size determinations shall be based on____percent of the reduced pressure.
Any water distributing system provided with a pressure regulating device or
check valve at its source or any water system containing storage water
heating equipment shall be provided with an approved, listed, adequately
sized pressure relief valve with approved drain, except for _______________________ having an
inside diameter of not more than 76mm.
Each pressure relief valve shall br an approved automatic type with drain,
and each such relief valve shall be set at a pressure of not more than
__________.
Relief valves located inside a building shall be provided with drain. Adequately-sized and not
smaller than the relief valve outlet or galvanized steel, hard drawn copper piping and fittings, CPVC
or PB with fittings which will nut reduce the internal bore or the pipe or tubing (straight lengths as
opposed to coils) and shall extend from the valve to the outside of the building with the the end of
the pipe not more than above the ground and pointing downward.
Any water-heating device connected to a separate elevated or pressure-type
storage tank and having valves between said heater and tank shall be
provided with an approved ____________ .
Controlled temperature and pressure relief valve
All pipings, equipment, appurtenances and devices shall be installed in a
_____________________ in conformity with the provisions and intents of this Code.
all water service yard piping shall be at least ____ below the finish ground level.
the bottom of the water pipe is at least ____ above the sewer or drain line.
the water pipe shall be placed on a solid shelf excavated at one side of the common trench with a
minimum clear horizontal distance between the sides of at least _____ from the side of the sewer
or drain and the water line.
water pipes crossing sewer or drainage piping constructed of clay or materials, not approved for
use within a building shall be laid a minimum of _____above the sewer or drain pipe.
unions shall be installed in the water supply piping within _____ away from regulating equipment,
water heater, conditioning tank, and similar equipment which require removal for servicing or
replacement.
1 PSI
support all piping intervals of not more than ______ at end of branches and at change of direction
or elevation.
support trap arms in excess of _____ in length as close as possible to the trap.
closet rings shall be tightly fastened with corrosive resistant fasteners up to the floor with top
surface _____ above the finish floor.
9. Romans 8:28
10
(c) NDJ 2023
For excreta drainage system, no galvanized wrought iron or galvanized steel pipe shall be used
underground and shall be kept at least ____mm above ground.
152mm
no____________type clay pipes or fittings for building drain or sewer shall be used above ground
or whenever piping is pressurized by a pump or ejector.They shall be kept atleast ______ below
vitrified clay pipes, 0.3m finish ground level.
recessed drainage type fittings on screwed pipe joints shall be of the __________________________.
water closets shall be computed at this amount of fixture units when determining the septic tank
size.
6 F.U.
clothes washers in groups of three shall be determined by this amount of fixture units for the
common horizontal and vertical waste size piping.
6 F.U.
0.063Lps
1 gpm is equal to
0.47 liters/second
the discharge capacity of 1 FU is
0.50-0.95 L/s
2 FU
1 to 1.89 L/s
4 units
1.95-31.5 L/s
6 units
3.15 L/s
capacity over this amount shall be determined by the administrative authority.
Each horizontal drainage pipe shall be provided with a cleanout at its upper terminal and each run
of piping which is more than________in total developed length shall be provided with a cleanout
and at every____________length or a fraction thereof.
15 meters
11 1/2
Number of threads per 25.4mm for 38 & 51mm dia. Pipes
8
Number of threads per 25.4mm for 64,76, & 102 or larger dia. Pipes
38mm
size of cleanout for 38 and 51mm diameter pipes.
64mm
size of cleanout for 64 and 76 diameter pipes.
89mm
size of cleanouts for 102 diameter and larger pipes.
cleanouts may be omitted on a horizontal drain line less than 1.5meter in length unless such line is
serving sinks or urinals.
1.5 meter in length
cleanouts may be omitted on a horizontal drainage pipe installed at a slope of ______ or less from
the vertical line.
72 degrees or less
an approved type of________ , installed inside the building wall near the connection between the
building drain and building sewer or installed outside of a building at the lower and of the building
two way cleanout fitting drain and extended to grade may be substituted for and upper terminal cleanout.
an additional cleanout shall be provided on a horizontal line with an aggregate offset angle of
direction exceeding_____________
135 degrees
Each cleanout shall be installed so it opens in the direction of flow to allow cleaning of the soil or
waste line or at right angles thereto, except int the case of wye branch and end of line cleanouts,
shall be installed _________above the flow line of the pipe
vertically
Each cleanout extension shall be considered as drainage piping and each ________ cleanout
extension shall be extended from a wye type fitting or other approved fitting of equivalent
90 degrees
sweep.
Each cleanout piping 51 mm or less in size shall be installed so that there is a clearance of not
less than _______mm in front of the cleanout.
305mm
0.45 meter vertical, 0.75 Cleanouts in piping larger than 51mm shall have a clearance of not less than_________ meter
vertical and ________meter horizontal clearance from the means of access to such cleanout.
meter horizontal
No underfloor cleanout in any residential occupancy shall be located more than___________ from
an access door, trap door, or crawl hole.
6.1 meters
shall be provided for pressure drainage systems.
cleanouts
countersunk cleanout
shall be installed where raised heads may cause hazard to passing personnel or vehicles.
plugs
when a ________________ is used for a required cleanout, the complete coupling and plug shall
be accessible for removal or replacement.
hubless blind plug
drainage piping serving fixtures which have flood level rims located below the elevation of the
nearby upstream manhole invert of the public sewer serving such drainage piping shall be
protected from backflow of sewage by installing an approved type________________.
backwater valve
9. Romans 8:28
11
(c) NDJ 2023
50.8mm diameter
backwater or swing
check valve and gate
valve
0.063L/s
51mm
3kgs.
2.4 meters
25mm
1.5-4.6meters
4.6 meters
0.8 meter; 0.45
15 cm; 45 cm
152mm
60 degrees celsius
152mm
19mm
1/2"
wearing plates and
baffles
102mm
No. 12 standard gauge
(2.77mm)
102mm
the minimum size of any pump discharge or any discharge pipe from a sump having a water closet
connected thereto shall be 50.8mm diameter.
the vertical discharge line from such ejector, pump, or other mechanical device to a horizontal
drainline shall be provided with an accessible ______________close to connection with the
horizontal line. The method of connection shall be at the top of the horizontal line using a wye
branch fitting. The gate valve shall be located at the discharge side of the backwater or check
valve.
Building drain or building sewer receiving discharge from any pump or ejector shall be adequately
sized to prevent overloading.Two fixture units shall be allowed for each ____________ or each
gpm flow.
the invert of the lowest inlet to the tank shall have a minimum distance of_______ above the high
water or "starting" level of the pumping operation.
air tanks shall be proportioned to be of equal cubical capacity to the ejector connected therewith
where there shall be maintained an air pressure of not less than ____ for each meter of height the
sewage is raised. No water operated ejectors shall be permitted.
Fixture outlets shall not be connected to the horizontal excreta drainage piping system within _____
meter of any vertical or horizontal change of direction of a stack containing suds producing fixtures.
the airgap for drainage shall not be less than _____ between the plumbing fixture, appliance, or
appurtenance outlet and the rim of the floor, sink, or receptor.
Indirect waste pipes exceeding ________ but not less than _______ length shall be directly trapped
but such traps need not be vented.
indirect waste pipes less than ___ in length need no be larger in diameter than the drain outlet or
tailpiece of the fixture, appliance, or equipment served, but in no case less than 13mm diameter.
No standpipe receptor for clotheswasher shall extend more than ____ nor less than ______ above
its trap.
No trap for any clotheswasher strandpipe receptor shall be installed below the floor but shall be
roughed no less than ____ and not more than ____ above the floor.
Clean running water used as cooling medium may discharge in the inlet of the drainage system.
Such trap connection shall be by means of a pipe connected to the inlet side of an approved fixture
trap, the upper end terminating in a funnel-shaped receptacle set adjacent, not less than______
above the overflow rim of the fixture.
No steam pipe shall be directly connected to any part of a plumbing or drainage system nor shall
any water having a temperature above _____ be discharged under pressure dircetly into any part of
a drainage system.
All condensers and sumps shall be properly trapped at the outlet with a deep seal trap extending to
within ____ of the bottom of the tank.
The top of the deep seal trap shall have a _____ diameter opening located at the highest point of
the trap to serve as siphon breaker.
Outlets shall be taken off from the side in a manner to allow a water line to be maintained that
permanently occupies not less than ______ the capacity of the condenser or sump.
shall be installed in the tank to protect the shell
sumps, condensers, or intercepting tanks constructed of concrete shall have walls and bottom not
less than _____ thickness, and the inside shall be cement plastered not less than 13mm in
thickness.
condensers constructed of metal shall not be less than and all such metal condensers be
protected from external corrosion by an approved bituminous coating.
sumps and condensers shall be provided with a suitable means of access for cleaning and shall
contain a volume of not less than twice the volume of water removed from the boiler or boilers
connected thereto when the normal water level of such boiler or boilers is reduced not less than
_______
9. Romans 8:28
12
(c) NDJ 2023
51mm
64mm
76mm
102mm
127mm
152mm
9.29m2
Wet venting
Four fixtures
two consecutive inlet
levels
Size of vents for boiler blowoff and water outlets 19mm diameter
Size of vents for boiler blowoff and water outlets 25.4mm diameter
32mm diameter
38mm diameter
51mm diameter
64mm diameter
the aforementioned size ratio shall only be used with boilers of ____ heating surface or less.
is limited to vertical drainage piping receiving the discharge from the trap arm of one and two
fixture units.
fixtures that also serve as a vent for not more than ____
the vertical piping between_______________ shall be considered a wet vented section.
each wet-vented section shall be a minimum of ____ larger than the required minimum waste pipe
size of the upper fixture or shall be 1 pipe size larger than the required minimum pipe size for the
sum of the fixture unites served by such wet-vented section, whichever is larger, but in no case
1 pipe size larger
less than 51mm in diameter.
Traps for ______ shall be roughed-in above the floor and may be vented by extending the vent as
island sinks and similar high as possible but not less than the drainboard height and then returning it downward and
connecting it to the horizontal sink drain immediately downstream from the vertical fixture drain.
equipment
The retumed vent shall be connected to the horizontal drain through a wye-branch fitting and shall,
in addition, be provided with a foot vent taken oft' the vertical fixture vent by means of a wye-branch immediately below the floor and thence extending the vent line to the nearest partition and
then through the roof to the open air or may be connected to other veats at a point not less than
_______ above the flood level rim of the fixtures served.
152mm
The retum bend used under the drainboard shall be a one ( 1) piece fitting or an assembly of a
________
45 degree elbows
Any branch more than _____m in length shall be separately vented in an approved manner
4.6meter
the minimum area of any vent installed in a CW &VS shall be atleast _____ the inside cross
sectional area of the drain pipe served.
1/2 (one-half)
each waste pipe and each trap in an CW & VS shall be atleast ____ pipe sizes larger than the
sizes required and atleast _____pipe sizes larger than any fixture tailpiece or connection.
2 pipe sizes
Such tailpiece or connections shall be as short as possible and in no case shall exceed _____
meters long.
0.6 meters/24inches
Cleanouts may not be required on any wet-vented branch serving a single trap when the fixture
tailpiece or connection is not less than ____ in diameter and provide ready access for cleaning
through the trap.
51mm
1 inlet serving not more than 2.8m3 of refrigeration space.
32mm
4 to 12m3; 32mm inlets or the equivalent refrigeration space.
51mm
13 to 36m3; 32mm inlets or the equivalent refrigeration space.
76mm
no galvanized wrought iron or galvanized steel pipe shall be used underground and shall be
kept at least ____ above ground.
15cm
copper, cast iron,
galvanized wrought iron,
Horizontal and vertical vent lines and vent stacks shall be
or PVC pipes
cast iron, galvanized
malleable iron, steel,
lead, copper,brass,ABS,
vent fittings shall be
PVC and others.
no galvalized malleable iron or galvanized steel fittings shall be buried underground but shall be
kept atleast______above finish ground level.
152mm
the length of the horizontal portion of a vent may exceed _____ of the total length of vertical and
horizontal postions, provided the vent is increased to one pipe size larger for its entire length.
one-third
9. Romans 8:28
13
(c) NDJ 2023
152mm
unless prohibited by structural conditions, each vent shall rise vertically to a point not less than ___
from the flood level rim of the fixtures served before offsetting horizontally to join the vent stack or
stack vent; the bottom connvestion shall be installed with approved drainage fittings and installed
with proper grade to the horizontal drain.
all vent pipes shall extend undiminished in size above the roof or shall be reconnected with the soil
or waste stack vent of proper size at a point below the roof, the vent through roof (VSTR) shall be
1 pipe size larger
increases ______ above the reconnection point of the stack vent and horizontal vent.
the vent pipe opening from a soil or waste pipe except for _____ or similar fixtures shall not be
below the weir of the trap.
water closet
may be served by a common vertical vent pipe when each such fixture wastes separately into an
Two fixtures
approved double branch fitting having inlet openings at the same level.
each vent pipe or stack thru roof (SVTR) shall extend its flashing all around the stack vent and shall
15cm
terminate verticaly not less than ____ above the roof
0.3meters
nor less than __ from any vertical surface nearby
each vent opening shall terrminate not less than ____ meters from, or at least ____meter above
3 meters, 0.9 meters, 0.9 any openable window, door opening, air intake or vent shaft,; nor less than ___meter away from
any lot line, alley and street boundary lines.
meters
vertical vent pipes for outdoor installations shall extend to atleast _____ meters distant from any
part of the roof that is used for other purposes and shall extend less than _______ above such roof
and shall be securely stayed.
3 meters; 2.1meters
Each soil or waste stack which extends _______ or more stories above the building drain shall
be served by a parallel vent stack which shall extend undiminished in size from its upper terminal at
the roof and connect to the soil or waste stack at ground level and at every fifth floor levels
with a "yoke vent" at a point below the horizontal soil or waste branch connection to the stack and
at the nearby vent stack above the same floor to provide a relief vent. The size of yoke vent shall
be not less in diameter than either the soil stack or the vent stack, whichever is smaller.
ten (10)
the yoke vent connection with the vent stack shall be placed not less than ____meter above the
floor level;
1.00meter
and the yoke vent connection with the drainage stack shall be by means of a _______ fitting placed
wye branch
below the fixture branch serving that floor.
1-1/4" (32mm) nor less
The diameter of an individual vent shall not be less than _________ nor less than ______ the
diameter of the drain to which it is connected
than 1/2"
one trap may serve 3 laundry tubs or single compartment sinks or 3 lavatories immediately
adjacent to each other and in the same room if the waste outlets are not more than ____ and the
0.75 meter apart
trap is centrally located where the 3 compartments are installed.
maximum length or a tailpiece.
0.6meter
a trap arm may change direction without the use of a cleanout when such change of direction does
not exceed______
90 degrees
for trap arms _____ mm diameter and larger, the change of direction not exceeding 22-1/2
degrees no cleanout is required and for change of direction greater than 22-1/2 a cleanout is
required at the bend.
76mm
TRAP ARM DIAMETER
DISTANCE TO VENT (x3) except for water closets or similar fixtures.
0.76 meters
32mm
1.07 meters
38mm
1.52 meters
51mm
1.83 meters
76mm
3.05 meters
102mm+
the developed length between the trap of a water closet or similar fixture measured from the top of
closet ring (closet flange) to inner edge of vent shall not exceed _____meters
1.8 meters/1829mm/6ft
an exposed and readily accessible tubing trap not less than ______ may be used on fixtures
gauge 17 B&S (1.1mm) discharging domestic sewage but shall exclude urine.
9. Romans 8:28
14
(c) NDJ 2023
51mm-102mm
152mm
3.4 L/s-1.3L/s
1.2 meters; 0.75
51mm
each fixture shall have a water seal of not less than ___ but not more than _____ deep except
where a deeper seal is found necessary by the administrative authority for special conditions.
interceptors or clarifiers for sand and similar heavy solids shall be so designed and located as
to be readily accessible for cleaning and shall have a water seal of not less than ____ deep.
No individual grease trap shall be installed for a facility that has an approved rate of flor of more
than _____ nor less than ______
an approved type grease trap may be used as a fixture outlet and the grease trap does not exceed
____ and the vertical tailpipe or drain does not exceed ____ meters
each grease trap shall have an approved water seal of not less than _____ in depth or the diameter
of its outlet, whichever is greater
9. Romans 8:28
15
(c) NDJ 2023
12.7mm
sand interceptors
0.2sqm/610mm
18 .9 L per minute flow
or fraction thereof
26 ga. galvanized sheet
metal.
102mm
not less than two (2)
times
C.l. drain with integrally
cast waterstop ring
around the outside of
body and placed at middepth of the concrete
roof slab
for one wall
for two adjacent walls
two walls opposite each
other and of each other
and of the same heights
two walls opposite of
differing heights
walls on three (3) sides
walls on four (4) sides
one-half of the gross
area
61 meters
0.6meter
150mm diameter
102mm & 154mm in
diameter
203mm diameter and
larger
0.3 meter below
3 meters
91 meters
laundry equipment that does not have integral strainers shall discharge into and interceptor having
a wire basket or similar device that is removable for cleaning that will prevent passage into the
drainage system of solids _____mm or larger in mazimum dimension such as string, rags, buttons,
or other solid materials.
shall be built of brick or concrete, prefabricated coated steel or other watertight material. The
interceptor shall have an interior baffle for fuill separation of the interceptor in 2 sections.
the sand interceptor shall have a minimum dimension of____ for the net free opening of the inlet
section and a min. depth under the invert of the outlet pipe of _____mm
For each___________over 75.7 L per minute the area of the sand interceptor inlet section is to be
increased by 0 .09 sqm. The outlet section shall at all times have a minimum area of fifty (50)
percent of the inlet section.
Rainwater downspout or conductor located on the exterior side of a low height building shall be not
less than ____________
Roof drains shall be equipped with strainers extending not less than ____ mm above the surface of
the roof immediately adjacent to the drain, Dome-Type Strainers shall have a minimum total net
inlet area of one and one-half (1-1/2) times the area ofthe outlet pipe to which it is connected.
Roof deck strainers for use on sun decks, parking decks and similar occupied areas shall be an
approved flat-surface type which is level with the deck. Such drains shall have a total net inlet area
_____________________the area of the outlet pipe to which the drain is connected.
Roofdrains passing through the roof into the interior of a building shall be made watertight at the
roof level by the use of _____________________ and the installation of a clamped suitable
flashing
material around the drain.
50 percent of area of the wall to the roof area
add 35 percent of the total wall areas to the roof area.
add no additional area to the roof area.
add 50 percent of wall area above top of lower wall to the roof area.
add 50 percent of area of the inner wall below the top of the lowest wall, plus allowance for
area of wall above the top of the lowest wall.
no allowance for wall areas below top of lowest wall-add for areas above top of lowest wall.
the area of the side of a tall building exposed to rain is taken___________of the gross ara.
the public sewer may be considered as not being available when such public sewer is or any
exterior drainage facility connected thereto is located more than _____ from any proposed building
or exterior drainage facility on any lot or premises thereat.
the building sewer, beginning from___meter from outside face off wall of building or structure….
no building sewer shall be smaller than _____diameter nor less in size than the building drain.
may have a slope of not less than s=1% (10.5mm) per meter
may have a slope of not less than s=0.5% (5.3mm per meter)
the building sewer or drainage piping shall be installed ______ below the surface of the ground.
when a building sewer or branch thereof does not exceed ____ in length and is a short straight line
extension from a building drain which is provided with a cleanout, no cleanout will be required at its
point of connection to the building drain.
the maximum distance between manholes shall not exceed______
9. Romans 8:28
16
(c) NDJ 2023
0.3meters
0.3 meters above
0.3meters
0.3m clear
3 meters
1.5 meters
30 days
0.6meters
clear
15.2meters
15.2meters
0.3meters
0.3meters
25.4mm
3.2mm
schedule 80/4.55mm
male threads
screwed pipe joint
19mm
0.002are prohibited
cement mortar joints
asbestos cement sewer
pipe joints
approved adapter
coupling
leak sealing additives
the inlet and outlet pipe connections of manholes shall be made by the use of flexible
compressions joints no closer than _______meter from outside of the manhole.
the bottom of the water pipe, at all points, shall be atleast______the top of the sewer or drain line.
the water pipe shall be placed on a solid shelf excavated at one side of the common trench with a
minimum clear horizontal distance of atleast_________ meter from the sewer or drain line.
water pipes crossing sewer or drainage piping constructed of clay or materials which are not
approved for use within a building shall be laid a minimum of ____ clear above the sewer or drain
pipe.
water pipe joints shall be installed not less than _____meters away from sewer line in both
directions.
every abandoned building (house) sewer, or part htereof, shall be plugged or capped in an
approved manner within ______ meters of the property line.
where disposal facilities are abandoned consequent to connecting any premises with the public
sewer, the permittee making the connection shall fill all abandoned facilities as required
Minimum horizontal distance required from building sewer-building or structures
"…" Property line adjoining private property
water supply wells (the distance may be reduced to not less than 7.6meters when drainage piping
is constructed of materials approved for use within a building)
streams
on site domestic water service line
public water main
depth of molten pig lead packed on CISP bell and spigot
the lead shall be caulked thoroughly at the inside and outside edges of the joint. After caulking the
finished joint shall not extend more than______ below the rim of the hub.
threaded plastic pipe shall be _______minimum wall thickness.
pipe joint materials shall only be applied to ________and such materials shall be approved
type,insoluble in water and nontoxic.
tape is acceptable for use on male threads, only if_______
wiped lead joints shall have an exposed surface on each side of the joint not less than_______and
at least as thick as the material being joined.
solder and fluxes with a lead content which exceeds this amount are prohibited in piping systems
used to convey potable water.
are prohibited on new building sewers
shall be a sleeve coupling of thesame composition as the pipe or of other approved materials, and
sealed with neoprene rubber rings or joined by an approved type compression coupling.
joints between asbestos cement pipe and other approved pipes shall be made by means of
an________________.
the addition of _________ to joint packing is prohibited.
9. Romans 8:28
17
(c) NDJ 2023
Flexible compression
factory fabricated joints
mechanical joints
neoprene rubber
elastomeric gasketed
and rubber-ring joints
neoprene gaskets
when pipe is joined by this means, such joints shall conform to approved standards and shall not
be considered as slip joints.
joints for centrifugally cast iron water pipe
shall be used in soils subject to oil intrussion.
shall comply with the applicable IAPMO installation standard.
are recommended for oil handling piping works.
a mechanical connection which depends on an internal retention device to prevent pipe or tubing
Pressure lock-type
separation. Connection is made by inserting the pipe or tubing inside the fitting to a prescribed
depth.
connection
shielded coupling joints shall not be considered as slip joints.
hubless cast iron pipes shall comply with IAPMO standards and shall not be considered as slip joints.
International Association of Plumbing & Mechanical Officials
IAPMO
joints in vitrified clay pipe or between such pipe and metal pipe shall be joined with neoprene
gasket for hub and spigot joints.
Neoprene Gaskets
caulked or threaded
joints between wrought iron, steel, brass, or copper pipe with cast iron pipe shall either
be_________________ joints or shall be made with approved adapter fittings.
joints
lead to cast iron,
joints between these shall be made by means of wiped joints to a caulking ferrule, soldering nipple
or bushing.
wrought iron, or steel
joints shall be made by the appropriate use of approved brass fittings properly soldered or brazed
together, or by means of approved brass compression type fittings.
copper water tube
job-fabricated female
use of ____________of PVC for water piping are prohibited. Factory made screw and of PVC
screws
adaptor fittings are acceptable for use if thickness conforms to schedule 80.
joints in thin-walled copper tubing to thick-walled threaded pipe shall be made by the use
of_________.
Brass adaptor fittings
fixture drains and traps slip joints of approved materials may be used in ________________.
vent and stacks
trap seal or between
fixture and its trap
Slip Joints
Closet bends or stubs
fixture carrier fitting
graphite-impregnated
asbestos, felt
counterflashing
brass or cast iron body
Copper tube
L
expansion joints shall be accessible, except for _____________ and it used in soil and waste
stacks to provide for necessary expansion and contraction joints of the pipes for high-rise buildings.
approved unions may be used in drainage work when accessibly located in the _____________
or between a _________________________.
three piece assemblies involving the use of a friction ring and a compression washer.
must be cut off square so as to present a smooth surface even with the top of the closet ring before
rough in inspection is called.
wall-mounted water closets shall be securely bolted to an approved fixture carrier fitting.
Gasket material for fixture carrier fitting shall be _______,_______, or other similar materials.
shall not restrict the required internal cross-sectional area of the vent.
cleanouts shall not be used as reducer or adapter.
shall not be used for piping carrying chemical or industrial wastes.
Copper tube for piping shall have a weight of not less than type _____
Copper tubing may be used to water piping when piping is above ground, inisde or atop a building
or underground outside of structures with outside protective coating.
M
all drawn copper tubing shall be marked by means of a continuous and indelibly colored stripe at
least _______mm in width.
6.4mm
Green color
type K
Blue
Type L
Red
Type M
Yellow
DWV
Weight and thickness of sheet lead shall not be less than:
LEAD
19.56kg per sqm/1.6mm For safe pans not less than ____________ and ________thick
14.63 kg/sqm and 1.2mm For flashings and vent terminals not less than _____________________ and ___________thick.
Lead bends and lead traps shall not be less then _____in wall thickness
3.22mm
9. Romans 8:28
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(c) NDJ 2023
178mm in diameter
6.4mm
4 bolts
Plugs
gas and watertight
Fullway type
102mm and larger
102mm and smaller
up to and including
51mm in size
ABBREVIATION
AHAM
ANSI
ASME
ASSE
ASTM
AWWA
Each such closet ring or flange shall be approximately ____mm in diameter and, when installed,
shall together with the soil pipe, presend a 38mm wide flange and groove face to receive the
fixture gasket or ball wax.
Caulked on closet rings or closet flanges shall not be less than ___mm thick and not less than
51mm in overall depth.
There will be ___bolts per water closet.
shall have raises square heads or approved countersunk regular slots, when cleanout is installed
along travel ways.
Cleanouts shall be ________and ________ without the use to any gasket, packing, or washer.
Gate valves, when used in drainage work, shall be of the _________type with working parts of
corrosion resistant metal.
shall have cast iron bodies for gate valves
shall have cast brass or bronze bodies
valves in this size shall be all brass or bronze metal
ACRONYMS
MEANING
ASSOCIATION OF HOME APPLIANCE MANUFACTURERS
AMERICAN NATIONAL STANDARD INSTITUTE
AMERICAN SOCIETY OF MECHANICAL ENGINEERS
AMERICAN SOCIETY OF SANITARY ENGINEERING
AMERICAN SOCIETY FOR TESTING AND MATERIALS
AMERICAN WATER WORKS ASSOCIATION
9. Romans 8:28
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(c) NDJ 2023
CISPI
FS
PDI
PNS
UL
WQA
ISO
EN
103.42 kpa
55.16 kPa
CAST IRON SOIL PIPE INSTITUTE
FEDERAL SPECIFICATIONS
PLUMBING AND DRAINAGE INSTITUTE
PHILIPPINE NATIONAL STANDARD CERTIFICATION MARK
UNDERWRITER'S LABORATORIES, INCORPORATED
WATER QUALITY ASSOCIATION
INTERNATIONAL STANDARD ORGANIZATION
EUROPEAN COMMITTEE FOR STANDARDIZATION CENTRAL SECRETARIAT
If the highest group of the fixtures contains flushometer valves, the pressure for the group should
not be less than
for flush tank supplies, the available pressure may not be less than
Determine the elevation in meters of the highest fixture group of fixtures above the water
street(main). Multiply this difference in elevation by 9.79. The result is in the loss in static pressure
in kPa.
How to solve loss in
static pressure in Kpa
pressure available for
friction loss in the
supply pipes if no water subtract the sum of loss in static pressure and the pressure to be maintained at the highest fixture
from the average minimum daily service pressure.
meter is used
if a water meter is used
the friction loss in the meter for the estimated maximum demand should also be subtracted from
the service pressure to determine the pressure loss available for friction loss in the supply pipes.
9. Romans 8:28
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APPENDIX A TBC
BASIC PRINCIPLES OF
PLUMBING
PRINCIPLE NO.1
PRINCIPLE NO.2
PRINCIPLE NO.3
PRINCIPLE NO.4
PRINCIPLE NO.5
PRINCIPLE NO.6
PRINCIPLE NO.7
PRINCIPLE NO.8
PRINCIPLE NO.9
PRINCIPLE NO.10
PRINCIPLE NO.11
PRINCIPLE NO.12
PRINCIPLE NO.13
PRINCIPLE NO.14
PRINCIPLE NO.15
PRINCIPLE NO.16
PRINCIPLE NO.17
PRINCIPLE NO.18
PRINCIPLE NO.19
PRINCIPLE NO.20
PRINCIPLE NO.21
PRINCIPLE NO.22
CODE OF ETHICS
NO.1
NO.2
NO.3
NO.4
NO.5
NO.6
NO.7
14sqm
304.8mm - 914.4 mm
50%
15 meter
1.5meter
3.00 meters
2/3, 2m3
0.9 meters, 1.5 meters
KEYWORDS
PURE AND WHOLESOME WATER
SUFFICIENT VOLUME AND AT PRESSURE ADEQUATE
MINIMUM QTY OF WATER
DEVICES FOR HEATING AND STORING WATER
SHALL BE CONNECTED TO THE SEWER SYSTEM
ONE WATER CLOSET AND ONE KITCHEN TYPE SINK
SMOOTH NON ABSORBENT MATERIAL
WITH ADEQUATE CLEANOUTS
NAMPAP APPROVED
EQUIPPED WITH WATER SEALED TRAP
ADEQUATE CIRCULATION OF AIR
EXTEND TO THE OUTER AIR
SUBJECTED TO TESTS
NO SUBSTANCE THAT WILL CLOG THE PIPES
PROPER PROTECTION TO PREVENT CONTAMINATION
NO WATER CLOSET, VENTILATION AND LIGHTING
SUITABLE PROVISION SHALL BE MADE FOR DISPOSING BUILDING SEWAGE
PREVENT OVERFLOW
MAINTAINED IN SERVICEABLE CONDITION
PROPERLY SPACED
DUE REGARD TO STRENGTH OF STRUCTURAL MEMBERS
UNLESS FIRST RENDERED INNOCUOS
KEYWORDS
ACT IN AN UNPROFESSIONAL MANNER
SUPPLANT ANOTHER REGISTERED MASTER PLUMBER
UNDERBID ANOTHER MASTER PLUMBER
TAKE ADVANTAGE OF A SALARIED GOVERNMENT POSITION
ALLOW THE USE OF HIS/HER LICENSE FOR A FEE
INJURE FALSELY
ADVERTISE IN SELF-LAUDATORY LANGUAGE
Where disposal fields are installed, a minimum of _____trench bottom shall be provided for each
system exclusive of any hard pan, rock, clay, or other impervious formations.
Side wall area in excess to the required _______and not to exceed ______ below the leach line
may be added to the trench bottom and when computing absorption areas.
where leaching beds are permitted in lieu of trenches, the area of each such bed shall be
atleast_____percent greater than the tubular requirements for trenches.
No excavation for a leach line or leach bed shall extend within ______ of the ground water table
nor to a depth where sewage may contaminate the underground water stratum that is usable for
domestic purposes.
In areas where the records or data indicate that the ground water are grossly degraded, the ______
separation requirement may be reduced by the administrative authority.
No excavation shall extend within _____ of the water table nor to a depth where sewage may
contaminate underground water stratum that is usable for domestic purposes.
The inlet compartment of any septic tank shall not be less than ______ of the total capacity of the
tank, nor less than ______m3 liquid capacity
The septic tank shall be atleast _____ in width and _____ in length
9. Romans 8:28
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0.6meters-1.8meters
1m3, 1/3
1.50meters
2(two)
508mm
3.7 meters
connecting sewer pipe
104.6 mm
106.6mm
101.6mm, 304.8
50.8mm
228.6mm
50.8mm
101.6mm
104.6mm in size
wooden baffles
14.4Kpa
101.6mm
No. 12 U.S. gauge (109)
(2.8mm)
25.4mm
19.1mm to 63.5mm
1.5meters
Distribution box
25.4 mm
dosing tank
Dosing tanks
The septic tank's liquid depth shall be ______ nor more than_____
The secondary compartment fo any septic tank shall have a minimum capacity of ____m3 and
maximum capacity of _____ of the total capacity of such tank.
In septic tanks having over 6m3 capacity, the secondary compartment may not be less than
_____meters in length.
Access to the septic tank must atleast have ___ manholes.
The manhole's minimum dimensions should be
Whenever a first compartment exceeds _____ in length, an additional manhole shall be provided
over the baffle wall.
The inlet and outlet pipe openings shall not be less in size than the ______________.
The vertical leg of a round inlet and outlet fittings shall not be less in size than the connecting
sewer pipe nor less than ________mm horizontal dimension when measured at the inlet and outlet
pipe inverts.
A baffle type fitting shall have the equivalent cross-sectional area of the connecting sewer pipe and
not less than ______mm horizontal dimension when measured at the inlet and outlet pipe inverts.
the inlet and outlet pipe or baffle shall extend ______ mm above and atleast _______mm below
the water surface.
the invert of the inlet pipe shall be at a level not less than ____mm above the invert of the outlet
pipe.
The side walls shall extend atleast _____ above the liquid depth.
The cover of the septic tank shall atleast be _____ above the back vent openings.
Partitions of baffles between compartments shall be of solid durable material and shall extend
atleast ______ above the liquid level.
An inverted fitting equivalent in size to the tank inlet, but in no case less than _____mm in size shall
be installed in the inlet compartment side of the baffle with the bottom of the fitting placed midway
in the depth of the liquid.
these type of baffles are prohibited
All septic tank covers shall be capable of supporting an eart load of not less than this when the
maximum coverage does not exceed 9 meters.
All concrete septic tanks shall be protected from corrosion by coating with an approved bituminous
coating or by other acceptable means. The coating shall extend to atleast ______ below the water
line and shall cover all of the internal area above that point.
the minimum wall thickness of any steel septic tank shall be____________and each such tank
shall be protected from corrosion, both externally and internally, by an approved bituminous coating
or by other acceptable means.
Before placing filter material or drain lines in a prepared excavation, all smeared or compacted
surfaces shall be removed from trenches by raking to a depth of _______ and the loose material
removed.
Clean stone, gravel, or slag, or similar filter material acceptable to the administrative authority,
varying in size from _____to ______ shall be placed in the trench to the depth and grade required
by this.
When seepage pits are used in combination with disposal fields, the filter material in the trenches
shall terminate atleast ____ from the pit excavation and the line extending from such points to the
seepage pits shall be approved pipe with watertight joints.
Where two or more drain lines are installed, an approved ______ of sufficient size to receive lateral
lines shall be installed at the head of each disposal field.
The inverts of all outlets shall be level and the invert of the inlet shall atleast be _____mm above
the outlets.
When the quantity of sewage exceeds the amount that can be disposed in 154.4 linear meter of
each line, a _________ shall be used.
shall be equipped with an automatic siphon or pump which discharges the tank once every (3) or
(4) hours. The tank shall have a capacity equal to (60) to (75) percent of the interior capacity of
the pipe to be dosed at one time.
9. Romans 8:28
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(c) NDJ 2023
304.8mm
30.5mm
457.2 to 914.4mm
1.8mm
304.8mm
457.2mm
level, 25mm/m
304.8mm
50.8mm
1.20 meters plus 6
meters
1.8 meters
304.8mm
2.2m
1.8m
101.6mm
304.8mm
152.4mm
17225 kPa/2498.19Psi
50.8mm
152.4mm
127mm
228.6mm
457.2mm
(1/4)bend fitting
Cesspool
Where the total length of pipe exceeds ___________linear meter, the dosing tank shall be provided
with 2 siphons or pumps dosing alternateky and each serving 1/2 of the leach field.
1 Disposal fields shall have a minimum of ___ drain lines per field.
The maximum length of each line
The bottom with of trench for disposal fields should be ______to ______
The spacing of lines of disposal fields, center to center.
The minimum depth of earth cover of lines is
The recommended depth of earth cover lines is
The minimum grade of lines should be ______ while the maximum is _______
Minimum filter material under drain lines
Minimum filter material over drain lines
The minimum spacing between trenches or leaching beds shall be _____ plus _____ for each
additional 3meters of depth in excesss of 0.3 meters below the bottom of the drain line for
disposal field construction.
Distribution drain lines in leaching beds shall be more than _____meters apart on centers and no
part of the perimeter of the leaching beds shall be more than 0.9 meters from a distribution drain
line.
Multiple seepage pit installations shall be served through an approved distribution box or be
connected in series by means of a water tight connection laid on undisturbed or compacted soil,
the outlet from the pit shall have an approved vented leg fitting extending at least ______mm
below the inlet fitting.
each seepage pit shall be circular in shape and shall have excavated diameter of not less
than_____mm.
Approval shall be obtained prior to construction for any pit having an excavated diameter greater
than ____m
For approved type precast concrete circular sections, no brick or block shall be greater in height
than its width and shall be laid flat to form atleast ____mm wall.
Brick or block greater than ______mm in length shall be chamfered matching ends and be scored
to provide for seepage.
Excavation voids behind the brick, block, or concrete shall have aminimum of _____ clean 19.1
mm gravel or rock.
All brick or block used in seepage pit construction shall have a minimum compressive strength or
_______kPa.
The arch or dome of any seepage pit may be constructed with an approved type hard burned clay
brick, or solid concrete brick, or block laid in cement mortar./Approved brick or block laid dry. An
approved cement mortar covering of at least ______mm in thickness shall be applied.
Said covering to extend at least ______mm beyond the sidewalls of the pit.
An approved type of one or two piece reinforced concrete slab of 17225kPa minimum compressive
strenght, not less than ______mm thick and designed to support an earth load of not less than 19.2
kpa.
Each cover shall be provided with a____mm minimum inspection hole with plug and cover and
shall be coated on the underside with an approved bituminous or other non-permeable protective
compound.
The top of the arch or cover must be atleast ______mm but not more than 1.2m below the surface
of the ground.
When using a one or two piece concrete slab cover inlet fitting may be a _________discharghing
through an opening in the top of the slab cover.
shall be considered only as a temporary expedient pending the construction of a public sewer, as
an overlfow facility when installed in conjunction with an existing cesspool, or as a means of
sewage disposal for a limited, minor, or termporary uses when first approved by the administrative
authority.
9. Romans 8:28
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(c) NDJ 2023
less than (2) years
6.1meters
304.8mm
1.5 meters
30 days
15.2 meters
3.00 meters
clear
0.60 meters
0.30 meters
1.5 meters
where it is established thast apublic sewer system will be available in less than __________ and
soil and ground conditions are favorable to cesspool disposal, cesspools without septic tanks may
be installed for single family dwellings or for other limited uses when first approved by the
administrative authority.
Each cesspool, when permitted, shall conform to construction requirements for seepage pits. Shall
have a minimum sidewall (not including arch) of ________meters below the inlet provided,
however, that when a strata of gravel or equally pervious material of 1.2meters of thickness is
found, the depth of such sidewall need not be more than 3.1 meters below the inlet.
When overflow cesspools or seepage pits are added to existing installations, the effluent shall
leave the existing pit through an approved vented leg extending atleast _____mm downward into
such existing pit and having its outlet flow line atleast 152.4mm below the inlet.
Every abandoned building (house) sewer, or part thereof, shall be plugged or capped in an
approved manned within _____of the property line.
Where disposal facilities are abandoned consequent to connecting any premises with the public
sewer, the permittee making the connection shall fill all abandoned facilities as required by the
administrative authority within ____days from the time of connecting to the public sewer.
Location of building sewers from water supply wells or streams.
Location of building sewers from pressure public water main.
Location of building sewers distance from property lines adjoining private property,.
Location of building sewers from buildings or structures.
Location of building sewers from on-side domestic water service line.
Location of septic tanks from buildings/structures, property line adjoining private property,
seepage pits or cesspools, disposal fields, and on-site domestic water service lines.
9. Romans 8:28
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(c) NDJ 2023
3.00 meters
15.20 meters
30.5 meters
2.40meters
1.50 meters
3 meters
1.20 meters
2.40 meters
45.70 meters
30.5meters
3.00 meters
3.70 meters
1.50 meters
3.00 meters
Location of septic tanks from trees, and pressure public water main.
Location of septic tanks from water supply wells and streams.
Location of Disposal Fields from water supply wells
Location of Disposal fields from buildings or structures.
Location of disposal fields from property line adjoining private property, seepage pits or
cesspools, on-site domestic water service line, and distribution box.
Location of disposal fields from pressure public water main
Location of disposal fields from other disposal fields.
Location of seepage pit or cesspools from other buildings/structures & property line adjoining
private property.
Location of seepage pit or cesspools water supply wells.
Location of seepage pit or cesspools from streams.
Location of seepage pit or cesspools from trees.
Location of seepage pit or cesspools from other seepage pits or cesspools.
Location of seepage pit or cesspools from disposal fields, on-site domestic water service line,
and distribution box.
Location of seepage pit or cesspools from pressure public water main.
9. Romans 8:28
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9. Romans 8:28
26