Sanitation, Plumbing Design and Installation

1. A physical separation, which maybe a low inlet into the indirect waste receptor from the fixture,
appliance, or device indirectly connected.
a. air gap c. air break
b. vacuum d. siphonage
2. Any two or more similar fixture adjacent to each other which discharge into a common
horizontal soil stack or waste branch.
a. Group vent c. battery of fixture
b. Series of fixture d. fixture branch
3. A length of soil or waste stack corresponding in general to a storey height but no case 2.43m
within which the horizontal branches, from one floor or storey or a building are connected to
the stack
a. Soil branch c. branch interval
b. Horizontal branch d. stack/riser
4. A flange that closes the end of pipe. There is no opening for the passes of liquid or gas.
a. Blank flange c. cap
b. Flange d. blind flange
5. Synonymous with faucet, cock, tap, plug. The word faucet is preferred.
a. Hose c. bibb
b. Bidet d. effective opening
6. A device installed in drain pipe or sewer to prevent the reversal of flow.
a. Backflow valve c. backwater valve
b. check valve d. house trap
7. A valve that automatically closes to prevent the flow of liquid or gas in a reverse direction.
a. Backflow valve c. trap seal
b. House trap d. check valve
8. A fitting, screwed or caulked over the end of pipe for closing the pipe end.
a. Plug c. clean-out cover
b. Flange d. cap
9. A pipe connected from building gutter to downspout.
a. Downspout c. leader
b. Inside storm drain d. flashing
10. A fixture designed for the washing of hands or face.
a. Faucet c. lavatory
b. Bidet d. sink
11. A water closet consisting of continuous through containing water. The through extends under
two or more adjacent seats prohibited by health authorities for permanent installations.
a. Lateral c. latrine
b. Unit vent d. privy
12. The lowest portion of pipe or conduit that is not vertical.
a. Dip c. invert
b. Effective depth d. diameter
13. A large opening in a sewer line or part of plumbing system constructed with sufficient size for a
man to gain access to facility for changes of line.
 a. Door c. manhole
b. Fire exit d. inlet
14. A line of piping, combination of elbows or bends which bring one section of the pipe out of line
but into a line parallel with the original section.
a. Offset c. receptor
b. Fitting d. interceptor
15. A pipe shaft to convey foul air from plumbing fixtures or a room to the outer air.
a. Vent pipe c. local vent
b. Shaft d. chase
16. A vertical vent connected from drainage to vent pipe or a branch at point of downstream of the
last fixture connection and turning horizontal line.
a. Relief vent c. stack vent
b. Circuit vent d. branch vent
17. The principal artery of the venting system to which the vent branches are connected..
a. Vent system c. stack vent
b. Main vent d. branch vent
18. A cylindrical conduit or conductor conforming to the particular dimensions and denoted inside
diameter
a. Tube c. channel
b. Conduit d. pipe
19. PB means?
a. Polybutylene c. polybutene
b. Polybuthylene d.polybuethylene
20. The pressure existing without flow in motion
a. Static pressure c. pressure gauge
b. Residual pressure d. atmospheric pressure
21. Includes all potable water supply, pipes, fittings, fixtures, traps, storm drainage, drain, leaders
and downspouts.
a. Water supply system c. storm water system
b. Plumbing system d. drainage system
22. An impairment of the quality of water to a degree which create hazards to public health and
adversely affects the potable water qualities of water for domestic use.
a. Bacteria c. contaminated water
b. Polluted water d. pollution
23. A vertical vent line, the primary function of which is to provide additional circulation of air
between the drainage and vent pipe.
a. Circuit vent c. dry vent
b. Individual vent d. relief vent
24. Any pipe which conveys the discharge of water closet or with fecal matter.
a. Waste pipe c. soil branch
b. Soil pipe d. soil stack pipe
25. A vertical pipe conveying waste from water closet of with fecal matter.
a. Soil pipe c. waste pipe
b. Soil stack pipe d. waste stack pipe
26. Any pipe receiving waste free of fecal matter.
a. Waste pipe c. waste stack pipe
b. Soil pipe d. drainage pipe
27. The vertical vent pipe installed primarily for providing circulation of air to and any part of the
soil, waste of the drainage system.
a. Stack vent c. main vent
b. Vent stack d. relief pipe
28. A pipe connecting upward from soil stack or waste stack below the floor; horizontal connection
to an adjacent vent stack at a point above the floor and higher than highest spill level of fixture
for preventing pressure changes in the stack; this pipe will be installed for buildings 10 storey or
more.
a. Main vent c. deaeration vent
b. Yoke vent d. shaft
29. Water supply pipe for public or community use.
a. Main sewer c. water supply
b. Water main d. service pipe
30. That portion of a vent pipe through where waste water also flow through; sometimes called a
drain pipe.
a. Dry vent c. wet vent
b. Unit vent d. branch vent
31. Any pipe or fitting installed in a vertical position or which form an angle of not more than 45
degrees
a. Horizontal pipe c. vertical
b. Stack pipe d. vertical pipe
32. Pipes installed to provide flow of air to or from a drainage system or to provide a circulation of
air with such system to protect trap seals from siphonage and back pressure.
a. Vent system c. drainage system
b. Dwv system d. sewer system
33. An arrangement of venting so installed that one vent pipe will serve two traps.
a. Unit vent c. continuous vent
b. Group vent d. individual vent
34. The pipe tubing that connects the outlet of a plumbing fixture to trap.
a. Tapped tee c. crown weir
b. Trap arm d. tail piece
35. The vertical main of a system of soil, waste or vent piping extending through one or more stories
and extended thru roof.
a. Ventilation stack thru roof c. vent stack
b. Stack vent thru roof d. stack
36. That portion of rainfall or other precipitation which runs off over the earth surface after a storm
a. Rain water c. ground water
b. Storm water d. water run off
37. A vertical pipe which is the extension of soil stack pipe above the highest horizontal drain
connected to the stack.
a. Stack vent c. soil stack
 b. Vent stack d. vent pipe
38. The maximum vertical depth of liquid that a trap will retain measured between the crown weir
to top of dip.
a. Trap seal c. crown weir
b. Water seal d. dip
39. The pipe from the street water main to building served.
a. Distribution pipe c. supply pipe
b. Service pipe d. riser
40. A pipe from water meter to building served or fixture.
a. Service pipe c. water supply pipe
b. Water distribution d. curb stop
41. Any branch in a building other than primary branch.
a. Secondary branch c. branch
b. Primary branch d. tertiary branch
42. Is a pipe installed to vent a fixture trap and which connects with the vent system above the
fixture served or terminates in the open air.
a. Unit vent c. circuit vent
b. Stack vent d. individual vent
43. Is that part of the lowest horizontal piping of a plumbing system which received the discharges
from soil, waste and other drainage pipe inside the building and conveys it to the house sewer.
a. Building drain c. main sewer
b. House sewer d. drain main pipe
44. The water that stands in or passes through the ground.
a. Ground water c. river
b. Spring d. run off
45. Is the slope or fall of a line of pipe with reference to a horizontal plane, in drainage it is usually
expressed as a fall in centimeters per meter.
a. Slope c. grade
b. Offset d. elevation
46. Is the minimum cross sectional area at the point of water supply discharge; measured or
expressed in terms of diameter of a circle.
a. Diameter c. developed length
b. Effective opening d. effective area
47. A valve located at the end of water pipe through of which water can be drawn from or held
within a pipe
a. Bibb c. faucet
b. Hose d. disk valve
48. Caulked or joint to an opening; is a pipe into which a plug is screwed that can be removed for
cleaning
a. Ferrule c. sleeve
b. Latrine d. epoxy
49. A term used to describe soil or waste system where all piping are threaded pipe, tubing or other
such rigid construction
a. Roughing in c. vent system
 b. Drainage system d. durham system
50. A stop valve placed at the connection of the water service to water main
a. Curb stop c. corporation cock
b. Meter stop d. stop box
51. Vertical vent that is a continuation of the drain to which the vent is connected
a. Group vent c. branch vent
b. Continuous vent d. unit vent
52. The extend portion of pipe that is closed at one end to which no connections are made on the
extend portion.
a. Cap c. flange
b. Plug d. dead end
53. That portion of the underground system which cannot drain by gravity into building sewer.
a. Building drain c. building subdrain
b. House sewer d. sump pit
54. That part of the horizontal piping of a drainage system which starts from the end of the building
drain which receives the discharge from the building drain.
a. House drain c. house sewer
b. Building drain d. main sewer
55. A water supply that connects the fixture with fixture branch.
a. Fixture branch c. water distribution
b. Fixture supply d. fixture
56. The level in a fixture at which liquid begins to overflow over the top of rim.
a. Flooded c. flood level rim
b. Flood level d. rim
57. The water supply pipe between the fixture supply pipe and water distribution pipe.
a. Fixture branch c. branch
b. Fixture supply d. riser
58. Any connection or arrangement, physical or otherwise between a potable water supply system
and any plumbing fixture with unclean water, polluted to enter any part of potable water under
any condition.
a. Contamination c. continuous waste
b. Cross connection d. lateral
59. A vertical shaft for installation of different pipe stack
a. Pipe chase c. local vent
b. Shaft d. soil stack
60. A vertical opening through a building for elevators; to remove foul air.
a. Pipe chase c. local vent
b. Shaft d. septic tank
61. A water tight receptacle which receives liquid waste to retain solid waste and digest organic
matter through a period of detention.
a. Catch basin c. tank
b. Fixture d. septic tank
62. Is the single sloping drain from the base of stack to its junction with the main building drain.
a. Primary branch c. main branch
 b. Secondary branch d. tertiary branch
63. The normal force exerted by a homogenous liquid or gas per unit area on the wall of container
a. Friction c. pressure
b. Head loss d. force
64. Is the top edge of a receptacle from where water overflows.
a. Rim c. flooded
b. Flood level d. flood level rim
65. Is an arbitrary quantity in terms of load producing effect or water requirement in plumbing
equivalent to rate of flow.
a. Fixture unit c. volume
b. Discharge d. flow rate
66. A receptacle other than trap attached in plumbing system in which waste maybe collected for
ultimate discharge into plumbing system.
a. Catch basin c. trap
b. Septic tank d. fixture
67. A receptacle in which liquid are retained for a sufficient period of time to allow settleable
materials to deposit.
a. Septic tank c. fixture
b. Receptor d. catch basin
68. Any two or more similar adjacent fixture which discharge into a common horizontal soil or waste
branch.
a. Ground of fixture c. series of fixture
b. Battery of fixture d. common fixture
69. The unobstructed vertical distance through the free atmosphere between the lowest opening
from any pipe to flood level rim.
a. Air space c. air space
b. Air gap d. vacuum
70. A pipe flange that is not drilled with bolt holes.
a. Blank flange c. cap
b. Blind flange d. flange
71. Any part of the piping system other than main, riser or stack.
a. Branch c. relief vent
b. Soil branch d. branch vent
72. A horizontal vent connecting one or more vertical back vent with the vent stack or stack vent.
a. Horizontal branch c. relief vent
b. Soil branch d. branch vent
73. A drain collecting storm water in balcony.
a. Roof drain c. downspout
b. Gutter d. scupper drain
74. The inlet area of a roof drain strainer is equal to?
a. Equal to the rea of outlet drain pipe
b. One and a half times the outlet area of drain pipe
c. Two times the area of drain pipe
d. Three times the area of drain pipe
75. The inlet area of roof deck strainer is equivalent to?
a. Three times the area of outlet drain pipe
b. Equal area of the outlet drain pipe
c. One and a half times the diameter of outlet area of drain pipe
d. Two times the outlet area of drain pipe
76. The size of pipe sleeve in foundation wall is equal to?
a. One pipe size smaller than drain pipe
b. One pipe size larger than the drain pipe
c. Two times larger than the drain pipe
d. Three times larger than the drain pipe
77. Water satisfactory for drinking culinary and domestic purposes.
a. Clean water c. potable water
b. Mineral water d. fresh water
78. Include all valves and controls used in plumbing system which are accessible.
a. Regulating equipment c. pressure regulator
b. Control valve d. relief valve
79. Unobstructed opening edge of fixture.
a. Rim c. air gap
b. Flood level rim d. air break
80. A device design to retain grease from one to a maximum of four fixtures.
a. Grease trap. C. receptor
b. Grease interceptor d. scullery sink
81. A waste that is not connected directly to drainage system
a. Direct waste c. indirect waste
b. Toxic waste d. grease
82. An interceptor of at least 3 cubic meter capacity and serves one or more fixtures, receiving
grease.
a. Grease trap c. receptor
b. Grease interceptor d. seepage pit
83. A horizontal pipe received waste from water closet.
a. Soil branch c. waste pipe
b. Soil pipe d. drainage pipe
84. Any pipe stand more than 45 degree from vertical plane or line
a. Vertical c. horizontal pipe
b. Horizontal d. branches pipe
85. Is a collector of water coming down from the downspout leading to accumulated water way.
a. Catch basin c. conc flooring
b. Splash pan d. grade line
86. The length of pipe along its centerline and fitting.
a. Developed length c. length of fitting
b. Length of pipe d. travel length
87. The pressure available at the fixture or water outlet allowance; pressure drop due to friction loss
a. Residual pressure c. normal pressure
b. Static pressure d. back pressure
88. A vertical pipe inside the building installed exclusively for the use of fire service
a. Dry standpipe c. fire service pipe
b. Wet stand pipe d. stand pipe
89. Are integrated fire suppression system consisting of water supply; a network of pipe
automatically opening in case of fire
a. Fire system c. stand pipe system
b. Sprinkler system d. plumbing system
90. In the absence of galvanized steel pipe, what is the other pipe used as stand pipe?
a. Copper pipe c. black iron pipe
b. Polypropylene d. wrought iron pipe
91. Galvanized steel pipe is preferred used in fire service pipe for the reason that this pipe can
withstand a water pressure of?
a. 20 kg/cm^2 c. 21 kg/m^2
b. 21 kg/cm^2 d. 20 kg/m^2
92. A water tank constructed below ground level with float valve.
a. Reservoir c. underground tank
b. Sump pit d. cistern
93. The highest point of the bottom of the internal surface of the trap.
a. Dip c. crown weir
b. Bottom outlet d. trap seal.
94. Occurs when a fixture is not used for a long time.
a. Capillary action c. back pressure
b. Back siphonage d. evaporation
95. A gas developed in septic tank; product of methane
a. Carbon dioxide c. sulfur monoxide
b. Carbon monoxide d. sulfur dioxide
96. This is used for basement or underground public toilet room where vent pipe cannot extend
above the ground.
a. Utility vent c. underground stack vent
b. Local vent d. sump pit vent
97. A plumbing fixture usually located in the the operating room in a hospital activated by knee
action.
a. Scullery sink c. cuspidor
b. Bar sink d. scrub sink
98. A vertical shaft inside the building where garbage is being placed prior for disposal to a
designated landfill.
a. Garbage chute c. garbage shaft
b. Rubbish chute d. chase
99. Portion of toilet room where janitors’ equipment is being placed.
a. Slop sink c. pan room
b. Powder room d. flue room
100. A stainless steel sheet material used in restaurant; should be borderized and galvanized.
a. Kitchen sink c. sacrarium
b. Scrub sunk d. scullery sink
101-140. Identify the following in Figure 1.

141. The size of outlet in dry stand pipe

a. 64 mm Ø c. 51 mm Ø
b. 38 mm Ø d. 100 mm Ø

142. The size of outlet in wet standpipe

a. 64 mm Ø c. 51 mm Ø
b. 38 mm Ø d. 100 mm Ø
143. Min height of outlet of wet standpipe
a. 460 mm c. 910 mm
b. 610 mm d. 1220 mm
144. Min height of 4 way fire service connection
a. 610 mm c. 910 mm
b. 1220 mm d. 460 mm
145. Maximum height of outlet of wet standpipe
a. 1220 mm c. 1200 mm
b. 1920 mm d. 1800 mm
146. Maximum height of 4 way fire service connection
a. 910 mm c. 1200 mm
b. 1920 mm d. 1220 mm
147. Maximum height of outlet of dry standpipe
a. 910 mm c. 1920 mm
b. 1200 mm d. 1220 mm
148. Size of dry stand pipe above 23m
a. 4 in Ø c. 2 in Ø
b. 6 in Ø d. 8 in Ø
149. Size of wet stand pipe above 15m.
a. 51 mm Ø c. 75 mm Ø
b. 64 mm Ø d. 100 mm Ø
150. Size of wet standpipe below 15m
a. 64 mm Ø c. 51 mm Ø
b. 38 mm Ø d. 75 mm Ø
151. Size of dry standpipe below 23 m
a. 6 in Ø c. 4 in Ø
b. 8 in Ø d. 3 in Ø
152. Ratio of water and air in stand pipe
a. 30% water, 70% air c. 60% water, 40% air
b. 70% water, 30% air d. 40% water, 60% air
153. Total length of firehose in wet standpipe
a. 40m c. 23m
b. 22m d. 42m
154. Area cover for one sprinkler head
a. 21 sqm c. 25 sqm
 c. 20 sqm d. 22sqm

155. Gas found in septic tank dissolved in oxygen

a. carbon c. hydrogen
b. methane d. sulfur
156. Gas found in septic tank; a colorless gas with an offensive odor
a. ammonia c. sulfur monoxide
b. chloride d. sulfur dioxide
157. Gas found in septic tank which is a colorless gas with irritating odor.
a. sulfuric acid c. sulfur monoxide
b. sulfur dioxide d. sulfur oxide
158. A kind of bacteria without relation in sewage disposals.
a. aerobic bacteria c. facultative bacteria
b. pathogenic bacteria d. anaerobic bacteria
159. A kind of bacteria that can live with or without oxygen
a. pathogenic bacteria c. anaerobic bacteria
b. facultative bacteria d. aerobic bacteria
160. A kind of bacteria found inside septic tank
a. anaerobic bacteria c. facultative bacteria
b. aerobic bacteria d. pathogenic bacteria
161. Additional manhole is required if the length of first compartment is greater than?
a. 2.5 m c. 3.7 m
b. 2.7 m d. 4 m
162.The length of leaching chamber should not be less than 1.5m if the volume of digestive chamber is
greater than?
a. 4 cu.m c. 7 cu.m
b. 5 cu.m d. 6 cu.m
163. The minimum clearance of liquid waste measured from the invert of inlet pipe to invert of outlet
pipe is equal to
a. 100 mm c. 75 mm
b. 50.8 mm d. 200 mm
164. Solid particles form like jelly located at the liquid waste level
a. sludge c. slim
b. scum d. algae
165. Size of manhole of septic tank
a. 600 x 600 mm c. 508 x 508 mm
b. 500 x 500 mm d. 500 x 508 mm

167-187. Identify the following in Figure 2.

188. An air pressure less than the atmospheric

a. static pressure c. residual pressure
b. vacuum d. normal pressure
189. Pressure greater than the atmospheric.
a. vacuum c. normal pressure
b. static pressure d. back pressure
190. A type of material in septic tank prohibited under the code.
a. steel c. plastic
c. wooden d. concrete
191. A circular disk to cover the hole of a wall.
a. flange c. escutcheon
b. union d. cap
192. Waste water from church altar prohibited to disposed in drainage system
a. holy water c. solitarium
b. sacrarium d. church waste
193. An interceptor to collect waste from one or more fixtures up to a max of 3 cu.m; remotely located.
a. grease trap c. oil separator
b. oil interceptor d. grease interceptor
194. A water waste not allowed to discharge in drainage system
a. flammable waste c. toxic waste
b. chemical waste d. contaminated waste
195. Air gap clearance for 12.5 mm diameter effective opening not affected by sidewall.
a. 12.5 mm c. 38 mm
b. 25 mm d. 51 mm
196. Air gap clearance for 19 mm diameter effective opening affected by sidewall
a. 38mm c. 57 mm
b. 51mm d. 64 mm
197. Is a fitting or device so designed as to provide when properly vented a liquid seal will prevent the
back passage of air without materially affecting the flow of sewage through it.
a. vent pipe c. interceptor
b. trap d. clarifier
198. A valve placed at the street side of water meter serving as the controlling device for the building.
a. corporation cock c. meter stop
b. curb stop d. water meter
199. A mechanical device used to measure the volume of water passing through the pipe.
a. water meter c. eco sounder
b. stop meter d. volume califer
200. A control valve for the hot water supply of a building usually placed between the sidewalk and drop
curb to shut off the water supply in case of emergency.
a. stop cock c. curb stop
b. corporation cock d. stop meter
201. A pipe laid along the foundation wall to protect the drain pipe.
a. pipe protector c. privy
b. ferrule d. pipe sleeve
202. Required slope of building drain for 4 in diameter pipe
a. 1% c. 0.5%
b. 2% d. 0.75%
203. Required slope for building drain of larger than 4 in diameter pipe
a. 2% c. 0.5 %
b. 1% d. 1.5%
204. Required slope of building drain 8 inches diameter pipe.
a. 2% c. 0.75%
c. 1% d. 0.5%
205. Minimum size of house sewer drain pipe.
a. 4 in Ø c. 8 in Ø
b. 6 in Ø d. is equal to the size of building drain
206. Minimum covering from top of house sewer to natural groud surface
a. 0.45 m c. 0.6 m
b. 0.15 m d. 0.3 m
207. Minimum covering from top of house sewer to top of concrete.
a. 0.6 m c. 0.45 m
b. 0.3 m d. 0.4 m
208. Minimum size of drain pipe that conveys waste from water closet
a. 4 in Ø c. 6 in Ø
b. 3 in Ø d. 2 in Ø
209.Minimum size of drain pipe conveying waste from water close for an experience master plumber
a. 6 in Ø c. 8 in Ø
b. 3 in Ø d. 4 in Ø
210. What is the minimum size of yoke vent?
a. equal to size of soil stack pipe
b. one half size of soil stack
c. two times the diameter of main vent
d. equal to the size of main vent
211. Minimum size of water supply pipe.
a. 10 mm Ø c. 19 mmØ
b. 12.5 mm Ø d. 25 mm Ø
212. In eight storey office building, in every floor the following are installed fixtures: 5 water closet, 5
lavatory, 5 floor drain, 5 bathtub and 2 slop sink. Determine the total drainage fixture unit
a. 528 c. 438
b. 638 d. 548
213. In six storey hotel building, every floor installed of the following fixtures: 3 WC flush valve, 5
lavatory, 3 bathtub and 2 kitchen sink. The total water supply fixture unit for private used is?
a. 206 c. 187
b. 211 d. 198
214. Drainage fixture unit of urinal
a. 5 c. 3
b. 6 d. 4
215. DFU of kitchen sink?
a. 5 c. 3
b. 4 d. 2
216. DFU of water closet
a. 5 c.3
b. 4 d. 6
217. DFU of floor drain
a. 3 c.1
b. 2 d. 4
218. DFU of lavatory
a. 1 c. 3
b. 2 d. 4
219. DFU of drinking fountain
a. 2 c. 1
b. 3 d. 4
220. WSFU of water closet flush tank (private)
a. 4 c.3
b. 5 d. 6
221. WSFU of urinal
a. 6 c. 4
b. 10 d. 5
223. WSFU of water closet flush valve (public)
a. 6 c. 10
b. 5 d. 4
224. Minimum water supply pipe of water closet flush valve.
a. 12.5 mm Ø c. 25 mm Ø
b. 19 mm Ø d. 10 mm Ø
225. Minimum water supply pipe of urinal
a. 12.5 mm Ø c. 10 mm Ø
b. 25 mm Ø d. 19 mm Ø

In eight-storey building, every floor is installed of the following fixtures: 10 WC, 15 lavatory, 15 floor
drain, 15 bathtub, and 7 slop sink
226. Determine the size of stack pipe from 8th floor to building drain
a. 6 in Ø c. 8 in Ø
b. 4 in Ø d. 3 in Ø
227. Determine the size of soil stack from 4th floor to building drain
a. 8 in Ø c. 4 in Ø
b. 6 in Ø d 3 in Ø
228. Determine the size of soil stack at ground floor.
a. 8 in Ø c. 4 in Ø
b. 6 in Ø d. 3 in Ø

229-235. Identify all parts of service connection in Figure III

236-247. Identify all parts of meter connection in Figure IV.

248-268. Identify all parts in Figure V.