PLUMBING CODE PRE-BOARD EXAMINATION - 01

b

Every building having plumbing fixtures installed and intended for human habitation, occupancy or use on premises abutting on a street, alley or easement where there is a public sewer, shall be connected to the sewer system.

a. Principle No. 4

b. Principle No. 5

c. Principle No. 6

d. Principle No. 7

a

Shall not act in an unprofessional manner and demand any remuneration other than his/her original charges except for additional services not covered in the basic contract.

a. Code of Ethics No. 1

b. Code of Ethics No. 3

c. Code of Ethics No. 5

d. Code of Ethics No. 7

a

May be made to any existing plumbing system provided the addition, alteration or repair works

a. conform to requirements for a new plumbing system

b. conform to requirements for an old plumbing system

c. conform to requirements for an existing plumbing system

d. conform to requirements for the code

d

Any public space, public park or the thoroughfare less than three (3) meters but not less than two (2) meters in width dedicated or deeded for public use.

a. Street

b. Park

c. Lot

d. Alley

b

No fitting having more than ____ shall be used unless such fitting is constructed so that the discharge from one inlet cannot readily enter into the other inlet.

a. one inlet at adjacent level

b. one inlet at the same level

c. two inlets at opposite level

d. two inlets of same size

d

horizontal drainage lines connecting to other horizontal drainage lines shall enter through _____, except

a. 45° wye branches

b. Combination wye and 1/8 bend branches

c. Other approved fittings of longer sweeps

d. Sanitary tees

b

Wastes detrimental to the public sewer system or to the functioning of the sewage treatment plant shall be treated and disposed of a found necessary and as directed by the Administrative Authority or other authorities having jurisdiction.

a. Domestic wastes

b. Industrial wastes

c. Chemical wastes

d. All of these

a

It shall be unlawful to conceal cracks, holes, or other imperfection in materials by welding, brazing or soldering the defects or by using therein or thereon any paint, wax, tar, or other sealing or repair agents.

a. Workmanship

b. Engineering practices

c. Principle No. 21

d. None of the above

a

For jointing of hub less cast-iron soil pipes are acceptable for use.

a. Approved stainless steel bands with neoprene gaskets

b. Wiped joint

c. Caulked joint

d. Solvent weld

b

The drainage system of each new building and of new work installed in any existing building shall be separate and independent from that of any other building and when available, every building shall have an independent connection with a private or public sewer.

a. Dependent system

b. Independent system

c. Plumbing system

d. Combined system

b

Iron Pipe Size (IPS) shall be supported at not less than every other storey height.

a. Cast Iron Soil Pipe

b. Screwed Pipe

c. Copper Tubing

d. Lead Pipe

c

It shall be supported at each storey or at maximum intervals of 3 meters on center.

a. Cast Iron Soil Pipe

b. Screwed Pipe

c. Copper Tubing

d. Lead Pipe

d

It shall be supported at intervals not exceeding 1.20 meters at centers with a rigid vertical back-up.

a. Cast Iron Soil Pipe

b. Screwed Pipe

c. Copper Tubing

d. Lead Pipe

a

Plastic Pipe shall be supported at every ___ interval.

a. 1 m

b. 2 m

c. 3 m

d. 4 m

b

____ shall be supported at sufficiently close intervals to keep them in alignment and prevent sagging.

a. Vertical pipes

b. Horizontal pipes

c. Both a & b

d. Neither a nor b

c

IPS shall be supported at approximately how many meters intervals for piping 19 mm diameter and smaller?

a. 1.5 meters

b. 2.0 meters

c. 3.0 meters

d. 3.6 meters

d

IPS shall be supported at approximately how many meters intervals for piping 25 mm and larger in diameter?

a. 1.5 meters

b. 1.8 meters

c. 3.0 meters

d. 3.6 meters

b

Copper Tubing shall be supported at approximately how many meters intervals for piping 38 mm diameter and smaller?

a. 1.5 meters

b. 1.8 meters

c. 3.0 meters

d. 3.6 meters

c

Copper Tubing shall be supported at approximately how many meters intervals for pipings 51 mm and larger in diameter?

a. 1.5 meters

b. 2.0 meters

c. 3.0 meters

d. 3.6 meters

d

It shall be supported by stiff metal or wooden backing for its entire length with hangers properly spaced.

a. Cast Iron Soil Pipe

b. Screwed Pipe

c. Copper Tubing

d. Lead Pipe

b

Plastic Tube shall be supported by stiff metal or wood backing with hangers in its entire length for small-sized tubings up to _____ diameter and without backings but with spaced metal hangers at approved spacing for larger-size tubings.

a. 32 mm

b. 38 mm

c. 51 mm

d. 76 mm

c

What is the clear height of the tunnels above the pipe? When pipe is driven, the drive pipe shall be at least one pipe size larger than the pipe to be laid.

a. 0.15 m

b. 0.30 m

c. 0.60 m

d. 2.40 m

d

Tunnels shall be limited in length to one-half (1/2) the depth of the trench, what is its maximum length?

a. 0.45 m

b. 1.00 m

c. 1.20 m

d. 2.40 m

b

Trenches shall be back-filled in thin layers of how many meters above the top of the pipe with clean earth which shall not contain stones, boulders, cinders or other materials which can damage or break the pipes or cause corrosive action?

a. 0.15 m

b. 0.30 m

c. 0.60 m

d. 2.40 m

d

Restaurant kitchen and other special-use sinks may be made of approved-type bonderized and galvanized sheet steel of not less than ____.

a. 1.8 mm thick

b. 2.2 mm thick

c. 1.1 mm thick

d. 1.6 mm thick

c

Fixtures having concealed slip joint connections shall be provided with an access panel or utility at least ____ in its least dimension and arranged so that the connections are readily accessible for inspection and repair.

a. 0.12 m

b. 0.15 m

c. 0.30 m

d. 0.45 m

c

Each such tailpiece, continuous waste or waste and overflow shall not be less than ____ for lavatories, drinking fountains and similar small fixtures; brass or copper shall not be used for urinal tailpiece or trap.

a. 32 mm I.D.

b. 38 mm I.D.

c. 32 mm O.D.

d. 38 mm O.D.

a

Baptistries, ornamental and lily ponds, aquaria, ornamental fountain basins and similar constructions when provided with water supplies connected to potable water supply lines shall be protected from

a. Back-siphonage

b. Back flow

c. Cross connection

d. Reverse back flow

c

_____ for “Sacrarium” cupsink at church altar and Baptistries font outlet shall discharge direct to the ground and not connected to the sanitary drainage system.

a. water drain

b. waste

c. wastewater drain

d. none of the above

c

plumbing fixture shall be installed in a manner provide easy access for repair and cleaning. Where practical, all pipes from fixtures shall be

a. run perpendicular and dose to the nearest wall or building line

b. run perpendicular and dose to the farthest wall or building line

c. run parallel and dose to the nearest wall or building line

d. run parallel and dose to the farthest wall or building line

c

It shall protect every water supply to a urinal or other approved backflow prevention device.

a. Air gap

b. Air break

c. An approved type vacuum breaker

d. Backwater valve

b

What is the minimum distance between the door or entry to the drain opening?

a. 1.0 m

b. 1.2 m

c. 1.5 m

d. 1.6 m

c

All shower compartments, regardless of shape, shall have a minimum finished interior area of ____, and shall also be capable of encompassing a diameter circle.

a. 0.6 m2; 276 mm

b. 0.6 m2; 672 mm

c. 0.6 m2; 762 mm

d. 0.6 m2; 267 mm

d

When shower receptors are built above ground the sub-floor and rough side of walls to a height of ____ above the top of the finished dam or threshold shall be first line with sheet lead or copper or with other durable and watertight materials.

a. no less than 25.4 mm

b. no less than 50.8 mm

c. no less than 64.0 mm

d. no less than 76.0 mm

d

What is the maximum space between drains in gutter?

a. 1.5 mm

b. 2.4 m

c. 3.9 m

d. 4.9 m

a

What is the minimum thickness of copper pans or liners?

a. Gauge No. 24 B & S or 0.5 mm thick

b. Gauge No. 20 B & S or 0.8 mm thick

c. Gauge No. 16 U.S. B&S or 1.6 mm thick

d. None of the above

d

What is the minimum number of LAV for 200 males? (Assembly Places – Theatres, Auditoriums, Convention Halls, etc. – for permanent employee use)

a. 2

b. 3

c. 4

d. 5

a

What is the minimum number of WC for 100 males? (Assembly Places – Theatres, Auditoriums, Convention Halls, etc. – for public use)

a. 1

b. 2

c. 3

d. 4

a

When provided with water outlets for such space, a 610 mm width of wash sink or 457 mm diameter of a circular basin, shall be

a. considered equivalent to one lavatory

b. considered equivalent to one water closet

c. considered equivalent to one kitchen sink

d. considered equivalent to one floor drain

c

Consists of two independently acting internally loaded check valves, a differential pressure relief valve, four properly located test cocks and two isolation gate valves.

a. DC

b. PVB

c. RP

d. AVB

c

Water Closet Flushometer Tanks shall be protected against backflow by

a. a listed atmospheric vacuum breaker

b. a listed ballcock

c. an approved backflow prevention assembly, device or method

d. listed construction and materials

d

Heat Exchangers, and other assemblies or methods of construction using potable water shall be of

a. a listed atmospheric vacuum breaker

b. a listed ballcock

c. an approved backflow prevention assembly, device or method

d. listed construction and materials

a

Potable water shall be separated from the fluids or gasses by

a. a minimum of two separate walls, with a positive, vented leak detection path

b. airgap

c. airbreak

d. all of the above

d

Inlets to Tanks, Vats, Sumps, Swimming Pools and other receptors when protected by a listed atmospheric vacuum breaker shall have such atmospheric vacuum breaker installed in

a. the inlet side of the last valve with the critical level of not less than 205 mm

b. the discharge side of the last value with the critical level of not less than 305 mm

c. the discharge side of the first valve with the critical level of not less than 152 mm

d. the discharge side of the last valve with the critical level of not less than 152 mm

a

Any joint or seam obtained by the joining of metal parts in a plastic molten state.

a. welded

b. soldered

c. flared

d. threaded

c

A faucet opened or closed by the fall or rise of a ball floating in the surface of water is called:

a. float valve

b. bibb

c. ball cock

d. top faucet

b

Joints between ____ and other approved pipe shall be made by means of an approved adapter coupling.

a. solder and sweat

b. asbestos cement pipe

c. solvent cement plastic pipe

d. flexible compression

c

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.

a. 25 mm

b. 19 mm

c. 3.2 mm

d. 6.4 mm

a

_____ are prohibited on new building sewers except for repairs and connections to existing lines constructed with such joints.

a. Cement Mortar Joints

b. Burned Lead Joints

c. Asbestos Cement Sewer Pipe Joints

d. Flared Joints

a

_____ Joints shall be lapped and the assembly shall be fused together to form a uniform weld at least as thick as the lead sheets being joined.

a. Burned Lead

b. Caulked

c. Flared

d. Threaded

a

_____ in cooper tubing shall be made by the appropriate use of approved brass or copper fittings. Surfaces to be joined by soldering shall be cleaned bright by manual or mechanical means.

a. Solder and Sweat Joints

b. Threaded Joints

c. Solvent Cement Plastic Pipe Joints

d. Flexible Compression Factory-Fabricated Joints

d

When pipe is joined by means of flexible compression joints, such joints shall conform to approved standards and shall not be considered as slip joints.

a. Solder and Sweat

b. Asbestos Cement Sewer Pipe

c. Solvent Cement Plastic Pipe

d. Flexible Compression Factory-Fabricated Joints

d

In addition to the required incised marking, all hard-drawn copper tubing shall be marked by means of continuous and indelibly colored stripe at least _____ in width

a. 1.8 mm

b. 1.6 mm

c. 3.2 mm

d. 6.4 mm

c

Weight and thickness of sheet lead shall not be less than _____ for lead bends and lead traps.

a. 19.56 kg/m2 and 1.6 mm thick

b. 14.63 kg/m2 and 1.2 mm thick

c. 3.2 mm in wall thickness

d. None of the above

c

What is the approximate diameter of a closet ring or closet flange when installed together with the soil pipe.

a. 102 mm

b. 76 mm

c. 178 mm

d. 38 mm

a

When 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.

a. 14 m2

b. 16 m2

c. 18 m2

d. 22 m2

b

In areas where the records or data indicate that the ground waters are grossly degraded, the _____ separation requirement may be reduced by the Administrative Authority. The applicant shall supply evidence of ground water depth to the satisfaction of the Administrative Authority.

a. 1.2 m

b. 1.5 m

c. 2.0 m

d. 3.0 m

a

Wherever a first compartment exceeds ____ in length, an additional manhole shall be provided over the baffle wall.

a. 3.7 m

b. 1.2 m

c. 6.4 m

d. 3.0 m

a

Inlet and outlet pipe fittings or baffles, and compartment partitions shall have a free vent area _____ of the house sewer or private sewer discharging therein to provide free ventilation above the water surface from the disposal field or seepage pit through the septic tank, house sewer, and stack to the outer air.

a. equal to the required cross-sectional area

b. 1.5 times the required cross-sectional area

c. Twice the required cross-sectional area

d. 2 ½ times the required cross-sectional area

c

The side walls shall extend at least ____ above the liquid depth.

a. 304.8 mm

b. 50.8 mm

c. 228.6 mm

d. 106.6 mm

a

Each such tank shall be structurally designed to withstand all anticipated earth or other loads. All septic tank covers shall be capable of supporting an earth load of ______ when the maximum coverage does not exceed 9m.

a. not less than 14.4 kPa

b. not less than 144 kPa

c. not less than 11.4 kPa

d. not less than 114 kPa

b

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 a _____ and the loose material removed.

a. 19.2 mm

b. 25.4 mm

c. 38.1 mm

d. 50.8 mm

b

When seepage pits are used in combination with disposal fields, the filter material in the trenches shall terminate at least ____ from the pit excavation and the line extending from such points to the seepage pit shall be approved pipe with watertight joints.

a. 1.2 m

b. 1.5 m

c. 2.0 m

d. 3.0 m

a

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.

a. Distribution box

b. Seepage pit

c. Septic tank

d. Disposal field

b

Fixture outlets shall not be connected to the horizontal excreta drainage piping system within how many meters from any vertical to horizontal change of direction of a stack containing suds-producing fixtures.

a. 3.0 m

b. 2.4 m

c. 1.2 m

d. 1.5 m

d

WSFU for the first water closet (flushometer valve type)

a. 10

b. 20

c. 30

d. 40

d

What is the minimum distance of baffles or partitions between compartments of a septic tank above the liquid level?

a. 50.8 mm

b. 228.6 mm

c. 508 mm

d. 101.6 mm

c

What is the minimum horizontal distance of a building from disposal field?

a. 1.5 m

b. 3.0 m

c. 2.4 m

d. 15.2 m

a

When bending copper tube by hand the required minimum radius of the circular disc is

a. 6.4 mm

b. 11.7 mm

c. 4.6 mm

d. None of the above

d

The minimum sidewall below the inlet of a cesspool is

a. 3.1 m

b. 4.1 m

c. 5.1 m

d. 6.1 m

a

When two or more drain lines are installed in a disposal field, _____ should be provided to receive the lateral line.

a. Distribution box

b. Cesspool

c. Septic tank

d. None of the above

a

What is the estimated sewage flow rate for day camp per person?

a. 56.8 li/day

b. 94.6 li/day

c. 189.3 li/day

d. None of the above

c

When disposal fields are installed in sloping ground, the required horizontal distance between any part of the leaching system and the ground surface is ____.

a. 3.0 m

b. 2.4 m

c. 4.6 m

d. 15.2 m

a

What is the estimated sewage flow rate for airports per passenger?

a. 18.9 li/day

b. 94.6 li/day

c. 189.3 li/day

d. None of the above

a

Asbestos cement sewer pipe shall be joined by means of _____.

a. Sleeve coupling with neoprene rubber rings

b. Caulking

c. Slip joint

d. Cement welding

a

The vacuum breaker is installed in a urinal, the correct way to measure the critical level is from

a. Highest part of the urinal

b. Center of the urinal

c. Bottom part of the urinal

d. None of the above

b

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

a. 1.5 m

b. 1.8 m

c. 2.4 m

d. 3.0 m

c

The developed length between the trap of a water closet or similar fixture (measured from the top of the closet ring (closet flange) to the inner edge of the vent) and its vent shall not exceed

a. 1200 mm

b. 1229 mm

c. 1800 mm

d. 1829 mm

a

Gutter has Semi-Circular bottom. Depth of equivalent area of rectangular gutter is equal to

a. 0.392 x diameter

b. 0.8862 x diameter

c. 0.508 x diameter

d. None of the above

b

The public sewer may be considered as not being available when such public sewer or any exterior drainage facility connected thereto is located _____ from any proposed building or exterior drainage facility on any lot or premises thereat.

a. Less than 61 meters

b. More than 61 meters

c. Less than 51 meters

d. More than 51 meters

c

Approved manholes may be installed in lieu of cleanouts when first approved by the Administrative Authority. The maximum distance between manholes shall not exceed _____.

a. 15.2 meters

b. 61 meters

c. 91 meters

d. 102 meters

c

A device installed in a drainage system to prevent reverse flow.

a. air chamber

b. water hammer arrester

c. backwater valve

d. gate valve

c

A valved outlet of a boiler that permits discharge of accumulated sediment.

a. gate valve

b. check valve

c. boiler blow-off

d. ball valve

b

Any joint obtained by joining of metal parts with alloys which melts at temperatures higher than 449 degrees centigrade, but lower than the melting temperature of the parts to be joined.

a. Soldered joint

b. Brazed joint

c. Wiped joint

d. Butt joint

b

A specially designed system of waste piping embodying the horizontal wet venting of one or more sinks or floor drains by means of a common horizontal waste and vent pipe, adequately sized to provide free movement of air above the flow line of the drain.

a. continuous waste

b. combination waste and vent system

c. sewage

d. domestic wastes

a

A drain connecting the compartments of a set of fixtures to a trap or connecting other permitted fixtures to a common trap.

a. continuous waste

b. combination waste and vent system

c. sewage

d. domestic wastes

c

The liquid and water-home wastes derived from the ordinary living processes, free from industrial wastes and of such character that permit satisfactory disposal without special treatment. It is discharged into the public sewer or into a private sewage disposal system.

a. Industrial waste

b. Domestic waste

c. Domestic sewage

d. Industrial sewage

d

A cesspool tank is not watertight.

a. Septic tank

b. Catch basin

c. Area drain

d. Leaching cesspool

a

The on-going installation of the plumbing system or any part thereof which has been installed prior to the effectivity of this Code.

a. Existing work

b. Rough-ins

c. Drainage system

d. None of the above

c

The water supply pipe between the fixture supply pipe and the water-distributing pipe.

a. Supply branch

b. Fixture supply

c. Fixture branch

d. Building supply

d

A pipe which conveys potable water from the building supply pipe to the plumbing fixtures and other water outlets.

a. Street main

b. Building supply pipe

c. Service pipe

d. Water distributing pipe

a

Is the slope or fall of a line of pipe with reference to a horizontal plane. In drainage, it is usually expressed as the fall in centimeters per meter or percentage slope of pipe.

a. grade

b. pitch

c. offset

d. run

c

The pipe or tubing that connects the outlet of a plumbing fixture to the trap.

a. trap

b. trap arm

c. tail piece

d. outlet

a

The pressure available at the fixture or water outlet; allowance is made for pressure drop due to friction loss, head, meter and other losses in the system during maximum demand period.

a. Residual pressure

b. Static pressure

c. Atmospheric pressure

d. Negative pressure

a

All plumbing fixtures and materials used in any discharge or plumbing system or parts thereof shall be free from defects.

a. Quality of materials

b. Workmanship

c. Plumbing system

d. None of the above

c

A water closet consisting of a continuous trough containing water. The trough extends under two or more adjacent seats. Prohibited by health authorities for permanent installations.

a. Trough

b. Washdown

c. Latrine

d. Pail flush

b

An underground drainpipe that receives only subsurface or seepage water and convey it to a sump for disposal by gravity flow or by lift pump.

a. Building drain

b. Subsoil drain

c. Building sewer

d. Subsurface drain

d

Wastes which require some special methods of handling such as the use of indirect waste piping and receptors; corrosion resistant piping; sand, oil or grease interceptors; condensers or other pretreatment facilities.

a. Industrial wastes

b. Chemical wastes

c. Domestic wastes

d. Special wastes

b

Pipes installed to provide flow of air to or from a drainage system or to provide a circulation of air within such system to protect traps seals from siphonage and back pressure.

a. Vent pipe

b. Vent system

c. Trap system

d. Durham system

d

A pipe connecting upward from a soil or waste stack below the floor and below horizontal connection to an adjacent vent stack at a point above the floor and higher than highest spill level of fixtures for preventing pressure changes in the stacks.

a. Relief vent

b. Dual vent

c. Revent

d. Yoke vent