Plumbing Hack

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1. “Size of water piping shall be based on the total
_________
A.water consumption
B.water demand
C.water potability
D.none of the above
2. Water closet bowls for________ use shall be elongated
bowl types equipped with open-front seats.
A.public
B.private
C.government
D.none of the above
3. Wastewater drain for _________ cupsink at church altar &
baptisteries font outlet shall discharge direct to the ground
& not connected to any sanitary or drainage system.
A.holy sink
B.lavatory
C.Baptismal shrine
D.Sacrarium
4. Tunnels shall have: the following except
A.a clear height of 0.6m above the pipe & shall be limited in
length to 1/2 the depth of the trench.
B.driven pipes shall have at least one pipe size larger than
the pipe to be laid
C.shall be back-filled in thin layers of 0.3m 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.
D.none of the above
5. the minimum cross sectional area at the seat of the
control valve or the supply pipe or tubing which feeds the
device outlet. If two or more lines supply one outlet, the
effective opening shall be the sum of the cross-sectional
areas of the individual supply lines or the area or the single
outlet, whichever is smaller.
A.effective opening
B.effective depth
C.effective area
D.effective invert
6. Suspended cast iron soil pipe shall be supported at not
more than ____m intervals, except that pipe exceeding
1.5m length may be supported at not more than _____m
intervals. Supports shall be adequate to maintain
alignment & to prevent sagging & shall be placed within
0.45m of the hub or joint.
A.1.5/ 3
B.1.5/ 4
C.3/ 1.5
D.4/ 1.5
7. No water closet or bidet shall be set closer than ______m
from its center to any side of the wall or obstruction or
closer than ______m center to center to any similar
fixture.
A..375 / 0.75
B..375 / 0. 70
C..40 / 0.70
D..50 / 0.60
8. Lead Pipe
- shall be supported at
by____________for entire length with hangers properly
spaced.
A.Stiff aluminum or wooden backing
B.stiff metal or wooden backing
C.stiff plastic or metal sheet
9. Fixtures having concealed slip joint connections shall be
provided with an access panel or utility at least ______m
in its least dimension for inspection & repair.
A.0.30
B.0.20
C.0.10
D.0.40
10. Excessive water pressure – water pressure greater than
____ Kpa
A.551
B.552

C.553
D.554
11. drains shall have a waterway equivalent area of the
“tailpiece” – meaning, the sum of all the areas of the
perforation of the strainer is equivalent to the outlet area.
A.Strainers serving bathub
B.Strainers serving shower
C.Strainers serving lavatory
D.none of the above
12. Copper Tubing - shall be supported at approximately
________m intervals for piping 38mm diameter & smaller
& _______m intervals for piping 51mm & larger in dia.
A.1.8/ 3.0
B.1.9/ 3.5
C.1.5 / 2.5
D.none of the above
13. Continuous waste fixture tailpiece connections were
exposed or accessible may be of seamless drawn brass
not less than Ga. 20 B&S or ______mm thk.
A.0.90
B.0.80
C.0.70
D.0.60
14. All porcelain enamel surfaces on plumbing fixtures shall
be __________
A.mold resistant
B.acid resistant
C.corrosion resistant
D.none of the above
15. All pipe determinations shall be based on eighty percent
(___) the reduced pressure.
A.70%
B.60%
C.80%
D.90%
16. ______________ must be supported at least every other
joint except that when the developed length between
supports exceeds 1.2m, they shall be provided at each
joint.
A.Couplings and compression joints
B.Hubless or compression gasket joints
C.Caps and plugs
D.none of the above
17. ____________
- shall be supported by stiff metal or
wood backing with hangers in its entire length for smallsize tubings up to 38mm diameter & without backings but
with spaced metal hangers at approved spacing for
larger-size tubings.
A.steel tube
B.plastic tube
C.aluminum tube
D.concrete tube
18. ________ m max
A.61
B.62
C.63
D.64
19.
A.WASTE TANK
B.SEPTIC TANK
C.SEWAGE DISPOSAL SYSTEM
D.NONE OF THE ABOVE
20.
A.20mm/m or 2%
B.30mm/m or 3%
C.40mm/m or 4 %
D.10mm/m or 1 %
21.
A.22 ½ degrees bend
B.45 degrees bend
C.60 degrees bend or other approved fittings of longer
sweeps
D.30 degress bend

22.
A.NAMPAP
B.DILG
C.DPWH
D.DENR
23.
A.AIR SEPARATION
B.AIR BREAK
C.AIR DEVISOR
D.NONE OF THE ABOVE
24.
A.BRANCH INTERVAL
B.INTERVAL
C.BRANCH
D.LENGTH
25.
A.1,2
B.1,1
C.2,1
D.2,3
26.
A.45 wye branches
B.combination wye & 1/8 bend branches
C.30 wye bend
D.or other approved fittings of longer sweeps.
27.
A.45 wye branches
B.combination wye & 1/8 bend branches
C.or other approved fittings of longer sweeps.
D.30 wye bend
28.
A.INTRAMUROS
B.BARASOAIN
C.BATAAN
D.CEBU
29.
A.45 wye branches
B.or other approved fittings of longer sweeps.
C.60 degree branches or offsets (only for pipes installed in
true vertical position
D.45 degree branches
30.
A.Double hub fitting for leak-caulked joint in vertical position
B.Single or double tee branch
C.Single or double tapped tee branch
D.Side inlet quarter bend, Running thread, band or saddle
E.all of the above
31.
A.single hub sanitary tapped tee
B.double hub sanitary tapped tee
C.triple hub sanitary tapped tee
D.none of the above
32.
A.plumbing unit
B.plumbing fixtures
C.plumbing system
D.plumbing minimum
33.
A.GI soil pipe
B.cast iron soil pipe
C.PVC soil Pipe
D.none of the above
34.
A.SINK
B.LAVATORY
C.BASIN
D.NONE OF THE ABOVE
35.
A.VENTILATING SYSTEM
B.WATER-SEALED TRAP
C.SOIL PIPES
D.WASTE PIPES
36.
A.100 mm

B.102 mm
C.101 mm
D.104 mm
37. Water pipes & fittings with a lead content that exceed
____ shall be prohibited & shall not be used in potable
piping systems.
A.8%
B.9%
C.10%
D.11%
38. Water Closet & Urinal Tanks shall be equipped with a
listed ________ & shall be installed with the critical level
at least 25mm above the full opening of the overflow
pipe.
A.corporation cock
B.gatevalve
C.ballcock
D.none of the above
39. THE TOTAL NUMBERS OF SET OF SANITARY/ PLUMBING
PLANS REQUIRED BY THE BUILDING OFFICIAL WHEN
APPLYING FOR PERMIT
A.4
B.5
C.3
D.6
40. THE SANITARY AND PLUMBING PERMIT WILL BE REVOKE
IF THE PROJECT HAS BEEN ABANDONED OR SUSPENDED
FOR HOW MANY DAYS
A.120
B.60
C.30
D.100
41. The quantity of water required to be supplied to every
plumbing fixture shall be represented by ____________
A.Fixture Units FU
B.Fixture drain FD
C.Fixture Trap FT
D.none of the above
42. The minimum airgap for Effective openings not greater
than 25mm in diameter. affected by walls
A.2 times diameter of effective opening
B.4 times diameter of effective opening
C.5 times diameter of effective opening
D.3 times diameter of effective opening
43. The minimum airgap for Effective openings
A.3 times diameter of effective opening
B.2 times diameter of effective opening
C.4 times diameter of effective opening
D.5 times diameter of effective opening
44. THE MINIMUM HEIGHT REQUIRED FROM THE FINISH
GRADE LINE THE SIAMESE INLET CONNECTION OF A
STANDPIPE
A.2.0 M
B.1.2 M
C.1.5 M
D.2.5 M
45. The minimum air gap for Over rim bath fillers & other
fixtures with effective openings not greater than 25mm in
diameter. affected by walls
A.76mm
B.77mm
C.78mm
D.79mm
46. The minimum air gap for Over rim bath fillers & other
fixtures with effective openings not greater than 25mm in
diameter. not affected by walls
A.54mm
B.53mm
C.52mm
D.51mm
47. The minimum air gap for Lavatories & other fixtures
with effective openings not greater than 13mm in
diameter if not affected by wall
A.25

B.24
C.23
D.22
48. The minimum air gap for Lavatories & other fixtures with
effective openings not greater than 13mm in diameter if
affected by walls
A.36mm
B.37mm
C.38mm
D.39mm
49. The minimum air gap for Sinks, laundry trays,
goosenecks bath faucets & other fixtures with effective
openings not greater than 19mm in diameter. if not
affected by wall
A.40mm
B.39mm
C.38mm
D.37mm
50. The minimum air gap for Sinks, laundry trays,
goosenecks bath faucets & other fixtures witheffective
openings not greater than 19mm in diameter. if affected
by wall
A.56mm
B.57mm
C.58mm
D.59mm
51. THE EXPIRATION OF THE PERMIT FOR SANITARY /
PLUMBING WILL BE EXPIRED AFTER HOW MANY YEARS
FROM THE DATE OF ISSUANCE
A.2
B.1
C.1.5
D.3
52. THE DRAWINGS, SPECIFICATION, CALCULATIONS AND
ETC FOR PLUMBING / SANITARY PERMIT WILL BE
SIGNED BY A a Registered & Licensed
A.DRAINAGE ENGINEER
B.MASTER PLUMBER
C.SANITARY ENGINEER
D.ARCHITECT
53. Restaurant kitchen & other special-use sink may be made
of approved-typed sheet steel not less than Ga.16 U.S.
B&S or 1.6mm thk.
A.bonderized & galvanized
B.aluminum
C.steel
D.none of the above
54. No urinal shall be set closer than _________m center to
center
A.0.70
B.0.60
C.0.50
D.0.65
55. No building sewer or other drainage pipings or part
thereof, constructed of materials other than that
approved for use under or within the building, shall be
installed under or within _____ m of any building or
structure, nor less than 0.3m below the finish ground
surface
A.0.60
B.0.40
C.0.30
D.0.20
56. No
A.21
B.20
C.25
D.19
57. Inadequate water pressure – water pressure less than
_____ Kpa
A.103
B.104
C.105
D.106

58. In Screwed Pipe - IPS shall be supported at
approximately _______m intervals for piping 19mm
diameter & smaller & _______m intervals for piping
25mm & larger in diameter.
A.3.5 / 3.0
B.3.0 / 3.5
C.3.6/ 3.0
D.3.0 / 3.6
59. In Ground
- piping buried on the ground shall be laid
on the ______ for its entire length, except where
concrete cradle support is provided which is adequate &
approved by the Administrative Authority.
A.firm bed
B.strata
C.compacted earth
D.none of the above
60. For EXCRETA DRAINAGE SYSTEM No Vitrified 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 ______m below
finish ground level.
A.0,30
B.0.40
C.0.50
D.0.60
61. For EXCRETA DRAINAGE SYSTEM No Galvanized
Wrought Iron orGalvanized Steel Pipe shall be used
underground & shall be kept at least _____mm above
ground.
A.155
B.152
C.153
D.154
62. For vertical piping, Screwed Pipe - Iron Pipe Size (IPS)
shall be supported at not less than every other storey
A.drift
B.height
C.level
D.dimension
63. For vertical piping, _________ - shall be supported at
each storey or at a maximum intervals of 3m o.c.
A.lead tubing
B.copper tubing
C.steel tubing
D.g.i. tubing
64. For vertical piping, cast iron pipes- Bell & Spigot &
Hubless pipe shall be supported at_____ or closer.
A.every 2 storey
B.every storey
C.every 3 storey
D.every 4 storey
65. FOR THE SET OF SANITARY/ PLUMBING PLANS
REQUIRED BY THE BUILDING OFFICIAL WHEN APPLYING
FOR PERMIT HOW MANY SET OF DRAWINGS WILL BE
RETURNED ON THE APPLICANT
A.1
B.2
C.3
D.4
66. FOR THE SET OF SANITARY/ PLUMBING PLANS
REQUIRED BY THE BUILDING OFFICIAL WHEN APPLYING
FOR PERMIT HOW MANY SET OF DRAWINGS WILL BE
PROVIDED FOR THE ADMINISTRATIVE AUTHORITY
A.1
B.4
C.3
D.2
67. FOR THE SET OF SANITARY/ PLUMBING PLANS
REQUIRED BY THE BUILDING OFFICIAL WHEN APPLYING
FOR PERMIT HOW MANY SET OF DRAWINGS WILL BE
KEPT IN THE JOB SITE
A.2
B.3
C.1

D.4
68. Fixture unit Lawn Sprinklers (standard type, each head)
A.1
B.2
C.1.5
D.2.0
69. Fixture unit Water Closet (economical flush) private use
A.5
B.4
C.3
D.2.5
E.2
70. Fixture unit of Urinal (stall & wall)
A.5
B.4
C.3
D.2
71. Fixture unit of Urinal (pedestal or similar type)
A.10
B.15
C.12
D.9
72. Fixture unit of Urinal (flush tank)
A.2
B.3
C.4
D.5
73. Fixture unit of Water Closet (flush tank & flushometertank),Hose Bibb or Sill Cock (standard type) private use
A.2
B.3
C.4
D.5
74. Fixture unit of Water Closet (flush tank & flushometertank),
A.5
B.4
C.3
D.2
75. Fixture unit of Water Closet (economical flush) public use
A.5
B.4
C.3
D.2
76. Fixture unit of Mobile Home (each)-temporary facilities
A.5
B.6
C.7
D.8
77. Fixture unit of Bidet, Bathtub(With or Without Shower
Over),Laundry Tub or Clothes Washer (each pair of
faucets), Shower (each head), Sink or Dishwasher
private use
A.2
B.3
C.4
D.5
78. Fixture unit of bidet, Bathtub(With or Without Shower
Over),Laundry Tub or Clothes Washer (each pair of
faucets), Shower (each head), Sink or Dishwasher
public use
A.2
B.3
C.4
D.5
79. Fixture unit Bar Sink, Drinking Fountain, Lavatory private
use
A.1
B.2
C.1.5
D.2.5
80. Ficture unit Bar Sink, Drinking Fountain, Lavatory public
use
A.1

B.2
C.1.5
D.2.5
81. EXCRETA DRAINAGE SYSTEM what piping installations
shall be used in high rise buildings
A.ABS Acrylonitrile-Butadiene-Styrene
B.PVC (POLYVINYL CHLORIDE)
C.Vitrified clay pipe
D.a,b
E.b,c
82. Consists of two independently acting internally or
externally loaded check valves, four properly located test
cocks with connectors & two isolation gate valves.
A.ATMOSPHERIC VACUUM BREAKER (AVB
B.DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY
(DC)
C.PRESSURE VACUUM BREAKER BACFLOW PREVENTION
ASSEMBLY (PVB)
D.none of the above
83. Consists of two independently acting internally loaded
check valves, a differential pressure relief valve, four
properly located test cocks & two isolation gate valves.
A.PRESSURE VACUUM BREAKER BACFLOW PREVENTION
ASSEMBLY (PVB)
B.REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTION
ASSEMBLY (RP)
C.ATMOSPHERIC VACUUM BREAKER (AVB
D.DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY
(DC)
84. Consists of a loaded air inlet valve, an internally loaded
check valve, two properly located test cocks & two
isolation gate valves.
A.ATMOSPHERIC VACUUM BREAKER (AVB
B.DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY
(DC)
C.PRESSURE VACUUM BREAKER BACFLOW PREVENTION
ASSEMBLY (PVB)
D.none of the above
85. Consist of a body, a checking member & an atmospheric
opening.
A.ATMOSPHERIC VACUUM BREAKER (AVB
B.DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY
(DC)
C.PRESSURE VACUUM BREAKER BACFLOW PREVENTION
ASSEMBLY (PVB)
D.none of the above
86. All pipings passing under or through walls shall be
protected from breakage with embedded
________________.
A.concrete pipe metal sleeves
B.pvc pipe sleeves
C.metal pipe sleeves
D.none of the above
87. All pipes passing through or under cinders or other
corrosive materials shall be protected from external
corrosion by encasing same with _______ or in any other
approved manner.
A.metal sheath
B.polybuthane sheath
C.polyethylene sheath
D.plastic sheath
88. _____________
- shall be supported at every 1m
interval.
A.plastic pipe
B.pvc pipe
C.steel pipe
D.lead pipe
89. in vertical piping ___________shall be supported at
intervals not exceeding 1.20m at centers with a rigid
vertical back-up
A.PVC pipe
B.Lead Pipe
C.Steel Pipe
D.G.I pipe

90. No Drainage or __________ shall be drilled & tapped for
making connections thereto
A.vent piping
B.drainage piping
C.none of the above
D.supply piping
91. which is not properly lighted & ventilated.
A.CATCH BASIN
B.LAVATORY
C.BIBB
D.WATER CLOSET
92. If it is impracticable to obtain such slope due to the
following conditions except,
A.Excessive depth of the proposed drainage line
B.Structural and/or geological features of the terrain
C.Existing adverse in arrangements of building structure
D.Reasonable change because of existing weather

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