National Plumbing Code Of The Philippines, Revised Edition (1999)
Settings
- 1.The _____________, or most well known to be the Code on Sanitation, was promulgated by the late President Ferdinand Marcos on December 23, 1975.
- A.
Presidential Decree No. 856
- B.
Presidential Decree No. 854
- C.
Presidential Decree No. 756
- D.
Presidential Decree No. 656
- 2.Known as the Water Code of the Philippines
- A.
RA 1080
- B.
PD 1067
- C.
RA 1037
- D.
PD 856
- 3.
- A.
June 18, 1955
- B.
January 28, 1959
- C.
November 28, 1967
- D.
December 21, 1999
- 4.NAMPAP was organized and registered to SEC
- A.
1954
- B.
1955
- C.
1935
- D.
1999
- 5.How many provision of the Master Plumber Code of Ethics
- A.
9
- B.
6
- C.
5
- D.
7
- 6.Also known as the RA 9275
- A.
Water Code of the Philippines
- B.
National Building Code of the Philippines
- C.
Philippine Clean Water Act of 2004
- D.
Code on Sanitation of the Philippines
- 7.Also known as the RA 9275
- A.
Water Code of the Philippines
- B.
National Building Code of the Philippines
- C.
Philippine Clean Water Act of 2004
- D.
Code on Sanitation of the Philippines
- 8.How many set of plans return to the applicant after approval of permit?
- A.
6
- B.
1
- C.
2
- D.
4
- 9.Manila City Ordinance ____, the “Plumbing Code of the City of Manila” was enacted and placed under the Department of Public Services, Manila
- A.
2431
- B.
2421
- C.
2411
- D.
2461
- 10.In 1954, the Third Congress approved House Bill No. 962 which in _____________ became ________ “Plumbing Law of the Philippines” upon ratification of President Ramon Magsaysay
- A.
June 18, 1955/RA 1378
- B.
January 28, 1959/RA 1348
- C.
July 26, 1957 /PD 567
- D.
November 28, 1975/ PD 167
- 11.The National Plumbing Code of the Philippines prepared by NAMPAP was promulgated and approved by Malacañang
- A.
June 18, 1955
- B.
January 28, 1959
- C.
July 26, 1957
- D.
November 28, 1975
- 12.How many set of plans retain to the jobsite after approval of permit
- A.
4
- B.
3
- C.
2
- D.
1
- 13.How many set of plans retain to the Administrative Authority after approval of permit
- A.
4
- B.
3
- C.
2
- D.
1
- 14.The first amendment of the National Plumbing Code which includes Asbestos-Cement pipe as approved plumbing materials was
- A.
June 18, 1955
- B.
December 21, 1999
- C.
November 28, 1967
- D.
January 28, 1959
- 15.Known as the National Building Code of the Philipppines
- A.
R.A. No. 6541
- B.
R.A. No. 1378
- C.
R.A. No. 962
- D.
R.A. No. 2411
- 16.How many basic principles are there in the NPC?
- A.
19
- B.
22
- C.
7
- D.
15
- 17.R.A. 1378
- A.
National Building Code
- B.
National Plumbing Code
- C.
National Fire Code
- D.
National Water Code
- 18.R.A. 1378
- A.
National Building Code
- B.
National Plumbing Code
- C.
National Fire Code
- D.
National Water Code
- 19.Plans and specifications shall be submitted in ___ sets of the aforementioned requirements with each application for a permit.
- A.
2
- B.
4
- C.
6
- D.
8
- 20.When the Administrative Authority issues the permit he shall endorse in writing or stamp the plans and specifications as " ______________".
- A.
COMPLETED
- B.
VERIFIED
- C.
APPROVED
- D.
SUBMITTED
- 21.How many set(s) of approved plans, specifications and data shall be returned to the Owner?
- A.
1
- B.
2
- C.
3
- D.
4
- 22.A plumbing permit issued shall expire and become null and void if the plumbing work authorized therein is not commenced within _______ from the date of such permit.
- A.
6 months
- B.
2 years
- C.
10 months
- D.
1 year
- 23.A plumbing permit issued shall expire and become null and void if the plumbing work authorized is suspended or abandoned at any time after having been commenced for a period of _________.
- A.
30 days
- B.
60 days
- C.
120 days
- D.
160 days
- 24.In case of renewal of a plumbing permit, a fee equivalent to _______________ shall be paid.
- A.
Half the amount of the original fee
- B.
Equal to the amount of the original fee
- C.
Twice the amount of the original fee
- D.
Thrice the amount of the original fee
- 25.The Administrative Authority requires that every request for inspection be filed at least ______________ before such inspection is intended.
- A.
1 week
- B.
5 working days
- C.
3 working days
- D.
1 working day
- 26.Horizontal drainage pipes 102 mm or larger in diameter may have a slope of _________ provided it is first approved by the Administrative Authority.
- A.
10 mm/m or 1%
- B.
20 mm/m or 2%
- C.
30 mm/m or 3%
- D.
40 mm/m or 4%
- 27.
- A.
45 degree bend, 90 degree bend or other approved fittings of longer sweeps
- B.
22 1/2 degree, 45 degree bend or other approved fittings of shorter sweeps
- C.
22 1/2 degree, 45 degree, 60 degree bend or other approved fittings of longer sweeps
- D.
60 degree, 90 degree bend or other approved fittings of longer sweeps
- 28.Horizontal drainage lines connecting to a vertical stack shall enter through
- A.
45 degree, wye, sanitary tee or other approved fittings of longer sweeps
- B.
45 deg. or 60 deg. wye , combination wye & 1/8, sanitary tee or other approved fittings of longer sweeps
- C.
45 deg. or 60 deg. wye , combination wye & 1/8, sanitary tee or other approved fittings of shorter sweeps
- D.
90 degree bend, wye & 1/8, sanitary tee or other approved fittings of shorter sweep
- 29.
- A.
45 degree, wye, sanitary tee or other approved fittings of longer sweeps
- B.
45 deg. or 60 deg. wye , combination wye & 1/8 or other approved fittings of longer sweeps
- C.
45 deg. or 60 deg. wye , combination wye & 1/8 or other approved fittings of shorter sweeps
- D.
45 deg. wye, combination wye & 1/8 or other approved fittings of longer sweeps
- 30.Vertical drainage lines connecting to horizontal drainage shall enter through
- A.
45 degree branches or other approved fittings of longer sweeps ; 60 degree when installed in a true vertical position
- B.
60 degree branches or other approved fittings of longer sweeps; 45 degree when installed in a true vertical position
- C.
22 1/2 degree branches or other approved fittings of longer sweeps; 60 degree when installed in a true vertical position
- D.
90 degree branches or other approved fittings of longer sweeps 45 degree when installed in a true vertical position
- 31.When a Public or Private Sewer is not available for use, excreta drainage piping from buildings and premises shall be connected to an approved ___________.
- A.
Public Sewage Disposal System
- B.
Private Sewage Disposal System
- C.
Sanitary Sewage Disposal System
- D.
None of the above
- 32.Rainwater drains shall discharge outside of the building or to the ____________.
- A.
Soil Pipe
- B.
Water PIpe
- C.
Vent PIpe
- D.
Gutter
- 33.Which of the statement is unlawful ?
- A.
All designs and constructions and workmanships shall be in conformity with accepted engineering practices
- B.
Conceal cracks or holes or other imperfection in materials
- C.
No double hub fitting for lead caulked joint in vertical position
- D.
No cast iron pipe shall be threaded
- 34.What is the exception in having an independent system for two buildings?
- A.
If one building stands side by side of another building
- B.
If one building stands in the front of another building
- C.
If one building stands in the rear of another building
- D.
If one building stands in the 2 meters away of another building
- 35.All pipings passing under or through walls shall be protected from breakage with embedded _________________.
- A.
Metal Pipe sleeves
- B.
Plastic Pipe sleeves
- C.
Pipe support
- D.
Clevis hanger
- 36.All pipings passing under or through walls shall be protected from breakage with embedded _________________.
- A.
Metal Pipe sleeves
- B.
Plastic Pipe sleeves
- C.
Pipe support
- D.
Clevis hanger
- 37.Building sewer shall be installed under or within ________ of any building structure.
- A.
0.2 m
- B.
0.4 m
- C.
0.6 m
- D.
0.8 m
- 38.Building sewer shall be installed under or within 0.6 m of any building structure nor less than __________ below the finish ground surface.
- A.
0.1 m
- B.
0.2 m
- C.
0.3 m
- D.
0.4 m
- 39.Cast Iron Soil Pipe shall be supported vertically at ______________ or closer.
- A.
Every 5 meters
- B.
Every storey
- C.
Every 4 meters
- D.
Every 2 storey
- 40.Copper tubing shall be supported vertically at each storey or at maximum of ______________ on center.
- A.
3 meters
- B.
2 meters
- C.
1 meter
- D.
0.5 meter
- 41.Lead pipe shall be supported vertically at intervals not exceeding __________ at centers with a rigid vertical back up.
- A.
3.2 meters
- B.
1.2 meters
- C.
10.2 meters
- D.
2.2 meters
- 42.Plastic pipe shall be supported vertically at every __________ interval.
- A.
4 meters
- B.
3 meters
- C.
1.2 meters
- D.
1 meter
- 43.Cast Iron Soil Pipes shall be supported horizontally at not more than ___________; except that pipe exceeding 1.5 meters length may be supported at not more than __________ interval.
- A.
1.5 m/ 3.0 m
- B.
1.0 m/ 2 m
- C.
1.5 m/ 2 m
- D.
3.0 m/ 4.5 m
- 44.CISP supports shall be adequate to maintain alignment and to prevent sagging and shall be placed within ___________ of the hub or joint.
- A.
0.15 m
- B.
0.25 m
- C.
0.35 m
- D.
0.45 m
- 45.Screwed pipe or Iron Pipe Size vertical supports.
- A.
At every other storey
- B.
At every 2 storey
- C.
At every 3 storey
- D.
At every 4 storey
- 46.Screwed pipe or Iron Pipe Size horizontal support for 19mm diameter and smaller.
- A.
At every 1.5 meter
- B.
At every 3.0 meter
- C.
At every 3.5 meter
- D.
None of the above
- 47.Screwed pipe or Iron Pipe Size horizontal support for 25 mm diameter and larger.
- A.
1.2 meter
- B.
2.4 meter
- C.
3.6 meter
- D.
4.0 meter
- 48.Copper tubing shall be supported horizontally at approximately ____________ for piping 38 mm diameter and below and ______________ intervals for piping 51 mm diameter and larger.
- A.
1.8 m/ 2.0 m
- B.
2.0 m / 3.0 m
- C.
1.8 m / 3.0 m
- D.
3.0 m / 3.6 m
- 49.Lead pipe and plastic tube shall be supported horizontally by _____________.
- A.
Stiff metal
- B.
Wood backing
- C.
Concrete
- D.
A and b
- 50.Piping buried in the ground shall be laid on a _________________.
- A.
Soft soil
- B.
Firm bed
- C.
Metal backing
- D.
Wood backing
- 51.Tunnels should have a clear height of ___________ above the pipe and shall be limited in length to _________ the depth of the trench with a maximum length of _________.
- A.
0.6 m/ 1/2 / 2.4 m
- B.
0.6 m/ 1/3 / 2.4 m
- C.
1.2 m/ 2/3 / 2.6 m
- D.
1.2 m/ 1 / 2.6 m
- 52.Tunnels 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 damage or break the pipes or cause corrosive action.
- A.
0.6 m
- B.
2.4 m
- C.
0.3 m
- D.
3.0 m
- 53.All porcelain enamel surfaces o plumbing fixtures shall be ______________.
- A.
Toxic resistant
- B.
Acid resistant
- C.
Solvent resistant
- D.
Water resistant
- 54.Water closet bowls for public use shall be the ______________ equipped with open-front seats.
- A.
Round type
- B.
Pail flush type
- C.
Squat type
- D.
Elongated type
- 55.Restaurant kitchen and other special-use sinks may be made of approved type bonderized and galvanized sheet steel of not less than ________________ or 1.6 mm thick.
- A.
Gauge No. 12 U.S. B & S
- B.
Gauge No. 16 U.S. B&S
- C.
Gauge No. 18 U.S. B&S
- D.
Gauge No. 26 U.S. B&S
- 56.The strainers serving shower drains shall have the waterway equivalent to the area of the ____________.
- A.
Inlet pipe
- B.
Outlet pipe
- C.
Tail piece
- D.
Fixture trim
- 57.Fixtures having concealed slip joint connections shall be provided with an access panel or utility at least ____________ for inspection and repair.
- A.
100 mm
- B.
200 mm
- C.
300 mm
- D.
400 mm
- 58.Continuous waste and fixture tailpiece shall be constructed from the materials for drainage piping, provided however that such connections where exposed or accessible may be of seamless drawn brass not less than __________________ B&S or 0.8 mm in thickness.
- A.
Gauge No. 12
- B.
Gauge No. 20
- C.
Gauge No. 16
- D.
Gauge No. 18
- 59._________________ shall not be installed inside public toilet rooms.
- A.
Drinking fountain
- B.
Water closet
- C.
Wash basin
- D.
Urinal
- 60.No dry or chemical closet (toilet) shall be installed in any building for human habitation, unless first approved by the ____________ or Administrative Authority.
- A.
Master Plumber
- B.
Owner
- C.
Health Officer
- D.
DOH
- 61.______________ cupsink at church altar and Baptistries font outlet shall discharge direct to the ground and not connected to the drainage system.
- A.
Ornamental
- B.
Aquaria
- C.
Sacrarium
- D.
Fountain
- 62.Where a fixture comes in contact with the wall or floor, the joint between the fixture and wall or floor shall be made ________________.
- A.
Air tight
- B.
Leak free
- C.
Gas tight
- D.
Water tight
- 63.No water closet shall be set closer than _____________ from its center to any side wall or obstruction.
- A.
0.75 m
- B.
0.50 m
- C.
0.45 m
- D.
0.375 m
- 64.No water closet shall be set closer than _____________ center to center to any similar fixture.
- A.
0.75 m
- B.
0.50 m
- C.
0.45 m
- D.
0.375 m
- 65.No urinal shall be set closer than _____________ center to center to any similar fixture.
- A.
0.30 m
- B.
0.40 m
- C.
0.50 m
- D.
0.60 m
- 66.No urinal shall be set closer than ____________ from its center to any side wall or partition.
- A.
0.30 m
- B.
0.40 m
- C.
0.50 m
- D.
0.60 m
- 67.An approved type __________ shall protect every water supply to a urinal or other backflow prevention device.
- A.
Pressure relief valve
- B.
Vacuum breaker
- C.
Angle valve
- D.
P-trap
- 68.No manually controlled flushometer valve shall be used to flush more than ______ urinal.
- A.
1
- B.
2
- C.
3
- D.
4
- 69.Floor drains shall be considered a plumbing fixture.
- A.
Yes
- B.
No
- C.
Maybe
- D.
When it has a trap
- 70.The area of the small holes of the strainer plate of a floor drain is equivalent to area of the __________.
- A.
Trap
- B.
Drain Pipe
- C.
Water supply pipe
- D.
Tail piece
- 71.Shower receptors are not a plumbing fixture.
- A.
Yes
- B.
No
- C.
Maybe
- D.
Sometimes yes, sometimes no
- 72.Each shower receptor shall have a finished dam, curb or threshold which is at least ________.
- A.
1"
- B.
2"
- C.
3"
- D.
4"
- 73.In no case shall any dam or threshold be less than __________ nor more than _________ in depth when measured from the top of dam or threshold to the drain.
- A.
25.4 mm / 51 mm
- B.
51 mm / 76 mm
- C.
51 mm / 228 mm
- D.
76 mm / 228 mm
- 74.Slope of the finished floor of the receptor.
- A.
1% - 2%
- B.
1% - 3%
- C.
2% - 3%
- D.
2% - 4%
- 75.Special shower compartments for wheelchair use may eliminate the The minimum distance between the door to the drain opening?
- A.
0.6 m
- B.
1 m
- C.
1.2 m
- D.
1.5 m
- 76.All shower compartments, regardless of shape, shall have a minimum finished interior area of ________________.
- A.
0.6 sq. m.
- B.
1 sq. m.
- C.
1.5 sq. m.
- D.
2.0 sq. m.
- 77.All shower compartments shall also be capable of encompassing a _________ diameter circle.
- A.
0.672 m
- B.
0.762 m
- C.
0.862 m
- D.
0.962 m
- 78.Drains in gutters shall be spaced not more than ___________.
- A.
4.9 m
- B.
5.9 m
- C.
6.9 m
- D.
7.9 m
- 79.Where there is exposure to skin contamination with poisonous, infectious, or irritating materials, provide _____________.
- A.
1 lavatory : 10 persons
- B.
1 lavatory : 8 persons
- C.
1 lavatory : 5 persons
- D.
1 lavatory : 3 persons
- 80.Laundry tray, 1: 50; Slop sink ____________
- A.
1:50
- B.
1:100
- C.
1:150
- D.
1:200
- 81.Water test shall be applied to drainage and vent systems.
- A.
1 meter of head for 10 minutes
- B.
2 meter of head for 10 minutes
- C.
3 meter of head for 15 minutes
- D.
5 meter of head for 15 minutes
- 82.Air test shall be made by attaching an air compressor testing apparatus. How is it done?
- A.
54 kPa gage pressure, 245 mmHg for 10 minutes
- B.
34.5 kpa gage pressure, 245 mmHg for 10 minutes
- C.
54 kPa gage pressure, 245 mmHg for 15 minutes
- D.
34.5 kpa gage pressure, 245 mmHg for 15 minutes
- 83.Building sewer test shall be tested by _________________.
- A.
Air test
- B.
Water test
- C.
Water or low pressure air test
- D.
Water or high pressure air test
- 84.Hot and cold water supply systems shall be tested under what water pressure?
- A.
100 %
- B.
150 %
- C.
200 %
- D.
250 %
- 85.Hot and cold water supply system, air test is _______________.
- A.
250 kPa for 10 minutes
- B.
200 kPa for 15 minutes
- C.
300 kPa for 10 minutes
- D.
345 kPa for 15 minutes
- 86.Shower receptor shall be tested for ______________.
- A.
Air tightness
- B.
Water tightness
- C.
Air and water tightness
- D.
None of the above
- 87.Hot water supply is located at _______________ of the combination fittings.
- A.
Left side
- B.
Right side
- C.
Center
- D.
Below
- 88.Fixtures not affected by side walls affected by side wallsLavatories a bSinks, laundry trays etc. c dBath fillers etc. e fEffective openings <25mm g hThe table above is the minimum airgaps for water distribution, What is the value of a, c, e, g?
- A.
25 mm, 38 mm, 51 mm, 1.5 times diameter of effective opening
- B.
25 mm, 38 mm, 51 mm, 2 times diameter of effective opening
- C.
38 mm, 57 mm, 76 mm, 1.5 times diameter of effective opening
- D.
38 mm, 57 mm, 76 mm, 3 times the diameter of the effective opening
- 89.Fixtures not affected by side walls affected by side wallsLavatories a bSinks, laundry trays etc. c dBath fillers etc. e fEffective openings <25mm g hThe table above is the minimum airgaps distribution. What is the value of b,d,f,h?
- A.
25 mm, 38 mm, 51 mm, 1.5 times diameter of effective opening
- B.
25 mm, 38 mm, 51 mm, 2 times diameter of effective opening
- C.
38 mm, 57 mm, 76 mm, 1.5 times diameter of effective opening
- D.
38 mm, 57 mm, 76 mm, 3 times the diameter of the effective opening
- 90.Backflow prevention device; consists of a body , a checking member and an atmospheric opening.
- A.
Double Check Valve Backflow Prevention Assembly(DC)
- B.
Atmospheric Vaccum Breaker
- C.
Pressure Vacuum Breaker Backflow Prevention Assembly (PVB)
- D.
Reduced Pressure Principle Backflow Prevention Assembly (RP)
- 91.Backflow prevention device; consists of loaded air inlet valve,internally loaded check valve, two properly located test cocks and two isolation gate valves.
- A.
Double Check Valve Backflow Prevention Assembly(DC)
- B.
Atmospheric Vaccum Breaker
- C.
Pressure Vacuum Breaker Backflow Prevention Assembly (PVB)
- D.
Reduced Pressure Principle Backflow Prevention Assembly (RP)
- 92.Backflow prevention device; 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.
Double Check Valve Backflow Prevention Assembly(DC)
- B.
Atmospheric Vaccum Breaker
- C.
Pressure Vacuum Breaker Backflow Prevention Assembly (PVB)
- D.
Reduced Pressure Principle Backflow Prevention Assembly (RP)
- 93.Water closet and Urinal flushometer valves shall be equipped with a listed ____________________.
- A.
Pressure relief valve
- B.
Atmospheric vacuum breaker
- C.
Check valve
- D.
Gate valve
- 94.Water closet and Urinal tanks shall be equipped with a listed ____________ installed with the C/L at least 25mm above the overflow pipe.
- A.
Flushometer valve
- B.
Ballcock
- C.
Jet valve
- D.
Angle valve
- 95.All small-sized malleable iron water fittings shall be __________________.
- A.
Copper
- B.
Plastic
- C.
Galvanized
- D.
Brass
- 96.Maximum lead content for water pipes and fittings.
- A.
2%
- B.
3%
- C.
5%
- D.
8%
- 97.A fullway _____________ controlling all outlets shall be installed on the discharge side of each water meter and on each unmetered water supply.
- A.
Butterfly valve
- B.
Globe valve
- C.
Check valve
- D.
Gate valve
- 98.Potable water inlets to gravity tanks shall be controlled by a ______________ to prevent the tank from overflowing.
- A.
Float valve
- B.
Float switch
- C.
Electrode-type water level
- D.
All of the above
- 99.An inadequate water pressure is less than ________________.
- A.
103 kPa
- B.
105 kPa
- C.
110 kPa
- D.
108 kPa
- 100.When there is an inadequate water pressure , this will provide greater pressure EXCEPT.
- A.
Hydro-pneumatic pressure tank
- B.
Elevated tank
- C.
Booster pump
- D.
Lift pump
- 101.An excessive water pressure is more than ______________.
- A.
551 kPa
- B.
450 kPa
- C.
103 kPa
- D.
251 kPa
- 102.This is installed when there is an excessive water pressure.
- A.
Vacuum breaker
- B.
Pressure regulator
- C.
Relief vent
- D.
Booster pump
- 103.Type of pressure relief valve installed.
- A.
Manual
- B.
Electrical
- C.
Automatic
- D.
Mechanical
- 104.All water service yard piping shall be at least ____________ below the finish ground level.
- A.
0.1 m
- B.
0.2 m
- C.
0.3 m
- D.
0.4 m
- 105.Ferrous piping shall have an outside protective coating; copper tubing if laid underground shall be externally protected with ______________.
- A.
Fiberglass wrapping
- B.
Bitumastic coating
- C.
Polyethelene sheath
- D.
A and b
Back to top