SPDI2 Flashcards
1
Q
What is the most important reason for backfilling a trench after pipe installation?
A
eliminate a safety hazard if left open
2
Q
What wall thicknesses are available in copper tubing for drinking water?
A
K, L, M, DWV
3
Q
Galvanization provides a pipe with what benefit?
A
Reduces corrosion
4
Q
What fitting joins pipes so they can be taken apart later?
A
Union
5
Q
How do street elbows and standard elbows differ?
A
Street elbows have one female and one male end
6
Q
How do copper pressure fittings differ from copper drain, waste, and vent (DWV) fittings?
A
Pressure fittings have a deeper solder pocket
7
Q
What is the smallest increment on most of the tape measures in our trade?
A
Sixteenth inch
8
Q
What is the next largest sixteenth-inch mark after ¾?
A
13/16ths
9
Q
What kind of tape measurer can you use to determine the travel when the offset angle is known to be 45 degrees?
A
plumbers rule
10
Q
How do you determine the center of a fitting?
A
By finding where lines drawn through the fitting intersect
11
Q
An end-to-center measurement is made from the?
A
End of pipe to center of fitting
12
Q
When cutting tubing with a tubing cutter, how far do you turn the handle after each revolution?
A
1/4 turn
13
Q
To remove the burr from inside a piece of pipe, operate the handle of the reamer with?
A
Short, even, clockwise strokes
14
Q
What diameter steel pipe sizes are able to thread with a nonadjustable ratchet style hand threader?
A
1/8 - 2 inches
15
Q
When threading steel pipe with a hand threader, how often do you apply oil to the pipe dies?
A
Apply oil every two or three downward strokes of the die handle
16
Q
What is the purpose of oiling while threading the steel pipe?
A
Prevents the dies and threads from overheating and becoming damaged
17
Q
When threading a fitting on a pipe, what happens if you overtighten a fitting?
A
The fitting stretches and the joint leaks
18
Q
What size pipe wrench do you use on a ¼ inch pipe?
A
8 inch (200 mm)
19
Q
What preparation must you make to produce a good bond between the base metal and the solder in a copper soldered joint?
A
The metal surfaces must be perfectly clean at the joint
20
Q
How much solder is needed to solder a ½ inch connection?
A
1/2 inch
21
Q
When using a lever type tubing bender, you can make angles up to how many degrees?
A
180 degrees
22
Q
What action creates an watertight and airtight seal on a ferruled joint?
A
Tighten the nut which crimps the ferrule into the tubing and against the fitting
23
Q
What is one disadvantage of the no-hub drainage system?
A
Support around the pipe may be required
24
Q
When solvent welding plastic pipe, how do you insert the pipe into the fitting?
A
Quickly insert the pipe into the fitting with a onequarter turning motion
25
How is large underground plastic pipe joined?
O-ring joints
26
What are two types of pumps used in booster stations?
Deep well and split case
27
What is the reason we use elevated storage tanks in water systems?
Elevated storage tanks provide cheap pressure
28
What element of a water meter translates the action of the water flow?
Secondary
29
What is the minimum burial depth for water mains under roads?
3 feet (0.9 m)
30
What is the part of the water distribution system main and extends into the building?
Water service lines
31
Before a new water main is put into service it must be?
Tested and disinfected
32
A kind of cleanout plugs that will be installed in case where raised heads may cause hazards to passing personnel or vehicles.
Countersunk
33
If the water level in a fire hydrant barrel rises after the hydrant is shut off, then?
The main valve is leaking
34
What is the normal operating pressure of a water distribution system?
40 to 75 psi
35
Which instrument is used to measure velocity flow from a fire hydrant?
Pitot tube
36
After you have taken all the hydrant readings, you should shut down the hydrants slowly to?
Prevent surges in pressure
37
One of the factors to consider when sizing the supply for a building is type of?
Flush devices
38
To solder copper joints in a water distribution piping, you must not use solder containing?
More than 0.2 percent lead
39
How are the building water distribution branch lines normally installed?
Horizontally, with a slight grade toward the point of use
40
What device do you install in a building distribution system to correct a water hammer problem?
Vertical air chamber
41
The first step in the rough-in of fixtures is to locate the?
Exact position of the opening for each fixture
42
Where on the studs should you cut holes for water supply lines?
Center
43
To reinforce a structural beam that has been undercut?
Place a strap iron brace across the notch and fasten it with lag screws
44
When hanging steel pipe, place hangers no further apart than?
10 feet (3.0 m)
45
How many feet apart should 1 ½ inch diameter horizontal copper tubing be supported?
6 feet (1.8 m)
46
Lead pipe and tubing must be supported vertically every?
4 feet (1.2 m)
47
The primary purpose of periodic testing of water mains of flow and pressure is to ensure that?
Sufficient water is available for fire fighting
48
Who must be notified anytime a water main is turned off?
Fire department
49
How many times are pipes in the water systems tested?
Twice, after rough-in and after fixtures are installed
50
How much air pressure should you use for testing piping for leaks?
30 psi
51
What can you use as a substitute for soapy water when leak testing pipe during freezing weather?
Pine oil
52
When winterizing a system, what is the first step in draining a water system?
Close the main shutoff valve
53
Which antifreeze solution should be your first choice when you are protecting fixture traps against freezing?
Glycol
54
When using a torch to thaw frozen pipes near wooden structures, you must isolate the area with a ?
Fire shield
55
The best way to thaw short length of frozen pipe up to 1 ½ inches in diameter is to use?
Electric thawers
56
What is the proper way to tighten bolts on a full circle clamp?
Working from the center out
57
What type of repair clamp should be used as a temporary repair?
Emergency pipe clamp
58
When installing a compression coupling, why do you dig out the area to give you as much flexibility with the pipes?
To allow for easy installation
59
In which order is a water main disinfected?
Flushing, dosing, testing, flushing
60
What is the proper length of time and velocity for flushing a main?
30 minutes / 2.5 fps
61
Which disinfection method is preferred on new water mains because of its simplicity and ease of use?
Calcium hypochlorite tablets
62
What is the correct chlorine dosage and contact time for disinfecting a water main?
50 ppm / 12 hrs
63
What type of drainage system collects waste from rain and melting snow?
Storm sewer
64
At what intervals are manholes usually placed in sewer mains?
400 to 600 ft
65
What may happen if a sewer pipe is laid with a fall greater than ¼ inch per foot?
Waste water runs away from solids, eventually causing stoppages
66
What is the desired fall for a 3 inch house sewer?
¼ inch / foot
67
The proper fall for a house sewer is established by?
Establishing a grade line then digging the trench to exactly this line
68
In constructing a sewer main, when should you backfill the trench?
After you inspect the sewer pipe
69
It is caused by foreign objects like string or thread suspended over outlet arm of the trap.
Capillarity action
70
For best results how should you backfill a trench?
Backfill in layers of not more than 4 in and tamp with a mechanical tamper
71
The building sewer is usually made of clay tile, cast iron, asbestos cement?
Plastic pipe
72
What is the name of a short piece of pipe with a hub at one end and a straight cut or 45 degree cut on the other end that is used to tap into a sewer main?
Thimble
73
Which type of sewage lift station houses the pumps and motors in a different compartment than the one that receives the wastewater?
Dry pit
74
What are the two classes of drainage piping?
Soil and waste
75
Which type of drainage piping only conveys liquids that are free of fecal matter?
Vent
76
In a building drainage system, what is the definition of a stack?
Vertical pipe of a system of soil, waste, or vent piping that extends through one or more stories
77
How does a soil stack differ from a waste stack?
A soil stack carries the human fecal discharge of water closets, urinals, or other similar fixtures to the building drain; whereas, a waste stack carries waste that is free of fecal matter from all fixtures
78
What is used to determine the size of the stack after the fixture unit values have been totaled?
Stack table
79
When you install an individual vent, how many inches must the venting piping rise above the fixture flood rim before it changes direction?
6”
80
What is the minimum sized pipe that you can use for a wet vent?
1 ½ inches
81
How do you repair a leak on a plastic pipe fitting?
Cut fitting out and install new fitting
82
What are the primary means of inspecting and maintaining the sewer system?
Manholes
83
What is used to remove ice from a manhole cover?
Nonsparking tools
84
What should you do if an oxygen deficient condition is present in a manhole?
Ventilate it or use self-contained breathing apparatus
85
What is the correct method of disposal for discarded grease, fats, and oils?
Dump into oil/water separator
86
Chemical drain cleaners are appropriate when the drains are?
Flowing sluggishly
87
When do you perform recurring maintenance on a sewer main?
Annually
88
What propels the nozzle of a jet rodder throughout the length of a sewer line?
Reverse jet action of the nozzle
89
To repair a broken sewer main where should you block off the manhole?
Outlet side
90
What is used to find the location of fixtures in a building?
Plumbing blueprints and floor plans
91
What is the smallest drain used in lavatories?
1 ¼ inches
92
What is the size of trap used with the popup drain tailpiece?
1 ¼ inches
93
What is the name of the special tool designed to reach the hex jamnut beneath a fixture?
Basin wrench
94
What size supply is required for a flushometer type water closet?
1 inch
95
Tank water closets are preferred over flushometer water closets for residences because they?
Are less expensive
96
What is the smallest plastic drain that can accommodate a water closet?
3 inches
97
When specifications are not available, install the urinal so the lip height is?
20 to 25 inches above the finished floor line
98
What is the minimum size plastic waste pipe that you can use on a urinal?
2 inches
99
The tub overflow and drain assembly is not included in the rough-in piping for a bathtub because it is attached directly to the?
Tub at the time the tub is set
100
The distance between the floor and the drain board in a kitchen sink should be?
36 inches
101
What type of sink is used for dumping mop buckets and washing mops?
Service sinks
102
What is installed on fixtures to keep sewer gases from entering the building?
Traps
103
What is the water depth of a common seal trap?
4 inches
104
If a faucet closes with the pressure; not against it, the result is?
Easier operation and a tighter seal
105
What part of the body-unit faucet virtually eliminates maintenance of the faucet under normal operations?
Ceramic component
106
What does continuous dripping of a single or mixing faucet indicate?
Bad washer
107
Which shower/bath mixing valve is sensitive to both temperature and pressure?
Thermostatic mixing valve
108
What size water supply line is required for urinal flushometers?
¾ inch
109
What size water supply line is required for water closet flushometers?
1 inch
110
What are the two most commonly used flushometer valves?
Piston and diaphragm
111
How do you repair a water closet's leaking flapper?
Replace flapper
112
A drinking fountain bubbler opening should be located above the drinking fountain rim a minimum of?
2 inches
113
Why must grease traps be installed in large military or commercial kitchens?
A properly installed trap will prevent stoppages caused by grease solidification
114
Where should a grease trap be installed?
As close to the fixture as possible, preferably inside the building
115
How is oil and water separated in oil water separators?
Physical and chemical
116
According to the stokes law of physics, approximately how many inches will a 100 micron diameter droplet of oil rise in water every 10 minutes?
6
117
On what type of as-built drawings are oil water separators located?
Mechanical
118
What is the normal working pressure of a gas water heater?
150 psi
119
A drop tube in a water heater causes the incoming cold water to mix with?
Stored hot water in the bottom of the tank
120
The drain cock with a hose connection at the bottom of a water heater is primarily used to?
Flush sediments out of the heater
121
The anode rod is installed in the top of water heaters to prevent corrosion?
Inside the tank
122
A domestic food grinder is designed to attach to drain with a diameter of
1 ½ inches
123
How is water allowed to enter an industrial food grinder?
Solenoid valve
124
What is the minimum size water supply for a drench type emergency shower and eye wash?
1 ¼ inches
125
According to Art 3.2.2.2 of PD 1096, What scope of work in plan preparation for new sanitary installation with more than 20 units does a sanitary engineer differs with a Registered Master Plumber?
Cost estimate
126
Screwed steel pipe 2 ½ inch diameter should have this number of threads for effective jointing.
8
127
Residential sink.
1.5
128
Laundry tub.
1.5
129
Shower bath.
2
130
Slop sink.
2
131
Sink (hotel or public).
2
132
Urinal.
1
133
Combination fixture.
2
134
One of the Code of Ethics for Master Plumber states, “Take advantage of a salaried _____ position to complete unfairly with a practicing Master Plumber.” What is the missing word?
Government
135
Fixtures outlet shall not be connected to the horizontal drainage within ____ of any vertical to horizontal change of direction of a stack containing suds-producing fixtures.
2.4m
136
Fixture unit values of a Slop sink.
3
137
It is the minimum pipe size for area drain.
4 inches
138
It is the recommended minimum pipe size P-trap floor drain.
3 inches
139
It is that portion of the horizontal drainage system which starts from the outer surface of the building and terminates at the main sewer in the street or septic tank.
House sewer
140
Is a receptacle used to catch surface water drained from cemented courts, driveways, and yards.
Yard catch basin
141
A group of fixtures consisting 1 wc, 1 or 2 lavatory, bathtub bath/shower, shower, urinal or bidet, emergency floor drain.
Bathroom group
142
The unobstructed vertical distance through the free atmosphere between the outlet of water pipe and the flood level rim of the receptacle into which it is discharging.
Air gap
143
It occurs due to an increased reverse pressure above the supply pressure.
Back pressure backflow
144
A house drain that receives discharges from industrial equipment that contain some objectionable acid wastes.
Industrial drain
145
Clean Air Act.
RA 8749
146
Provincial Water Utilities Act.
PD 198
147
Revised Fire Code of the Philippines 2008.
RA 9514
148
Water Code of the Philippines.
PD 1067
149
Clean Water Act.
RA 9275
150
Fixture unit value of a bathtub.
2
151
An act to regulate the practice of Sanitary Engineering in the Philippines.
RA 1364
152
Fixture unit value of a Floor drain.
2
153
A flange that closes the end of a pipe. There is no opening for the passage of air or liquid.
Blind flange
154
A plumbing fixture used for washing the middle private part of the body, especially the genitals.
Bidet
155
A valve opened and closed by the fall and rise respectively, of an attached ball floating on the surface of the liquid.
Ball valve
156
Civil Code of the Philippines.
RA 386
157
National Building Code of the Philippines.
PD 1096
158
It is called Back vent, Individual vent and?
Re-vent
159
It is called Common vent, Unit vent, and?
Dual vent
160
It is called Relief vent, Auxiliary vent, and?
Yoke vent
161
LPG, such as propane and butane, are odorized with compounds to allow leaks to be detected quickly. What is the common compound used as odorant?
Ethyl mercaptan
162
Power required to drive a centrifugal pump is directly proportional to _______ of its impeller.
Cube of diameter
163
You specified a standard 2” (51 mm) PVC pipe size for all the horizontal vent piping above the ceiling of the building you are designing. What is the maximum allowable length of these vent pipes as per code?
37m
164
The minimum water pressure in the main, after allowing friction and other pressure losses, before one needs to provide a hydro-pneumatic pressure tank or elevated water tank and booster pump to provide said pressure.
103kpa
165
According to the Fire Code of the Philippines, What is the required runs of dry standpipes system for purpose of draining?
20%
166
What is that receptacle attached to the plumbing system other than trap on which water or waste may be collected or retained for ultimate discharge into the drainage?
Catch basin
167
What is that vent pipe in plumbing that serves the building drain and building sewer?
SVTR
168
Is it a code to pipe an ejector pump waste line into a 4” (102 mm) horizontal?
FALSE 6"
169
When you install an ejector pump, in what order is it installed?
Pump, check valve, ball valve
170
What is the minimum distance between a tub spout and the flood rim level of the bath tub?
6"
171
Below what temperature is cold water?
85 degrees F
172
What temperature does a shower valve have to be set at?
115 degrees F
173
What temperature is considered hot water?
120 degrees F
174
How many water closets are allowed on a 3” horizontal waste line?
3
175
In a closed water system, is it applicable to install an expansion tank?
Yes
176
What is the maximum distance away from a water heater you can install a shutoff valve?
5ft (1.5m)
177
How many drainage fixture units (DFU’s) are allowed on a 2” (51 mm) horizontal drain line?
6
178
What is the distance from the top of a water heater to a relief valve?
6 inches (150 mm)
179
What is the minimum size vent for a water closet?
2
180
Under the Accessibility Law, what is the minimum area of water closet stalls?
1.7 x 1.8 m
181
For at least how many working days shall a required inspection of the building works be filed before such inspection be intended?
3 working days
182
What shall be issued by the Administrative Authority for the construction of a part of a large and/or complicated plumbing system before the entire plans and specifications for the whole system have been submitted or approved?
Partial permit
183
In order as not to impede the movement of a person in a wheelchair and to have a convenient access to the lavatory, what is the allowable knee recess vertical clearance that will be provided?
0.60 m to 0.70 m
184
What is the maximum length of the fire hose that shall be equipped on wet standpipes?
23 meters
185
NAMPAP is a professional organization of Registered Master Plumber under PRC. What is the PRC accreditation number of NAMPAP?
14
186
If the discharge of a fixture or drain may contain solids or semi-solids heavier than water that would be harmful to the drainage system or cause stoppage within the system, where the discharge must pass first?
Sand interceptor
187
In what year did NAMPAP was incorporated as a professional organization?
1935
188
A fitting for a lead-caulked joint that is prohibited when in vertical position.
double hub
189
Who shall set the criteria for the quality of drinking water from meteoric, surface, or underground sources?
National standard for dringking water
190
What is the minimum diameter of vent pipe allowed in the RNPCP?
1 1/4inches
191
What is the minimum total net inlet area of roof deck drains on roof deck used as sun decks and parking decks?
Equal to 2 times the area of outlet pipe
192
Which of the following is not included in a plumbing unit?
Water meter
193
What is the minimum pipe size of the standpipe if the highest outlet is located more than 23 m above the Fire Service connection?
6 inches
194
For the hot and cold water distribution system, on what side should the hot water supply be placed in combination fittings?
Left
195
Unless prohibited by structural conditions, what is the reference of each vertical vent pipe before offsetting horizontal to join the stack vent or vent stack?
Highest flood level rim of fixture
196
What provision does the design, construction, and operation of deep wells for the abstraction of groundwater will have to follow?
Water Code of the Philippines
197
To allow cleaning of the soil and waste line, each cleanout should be installed,
in the direction of flow
198
What kind of joint is not allowed in cast iron pipe?
Threaded
199
Drainage piping serving fixtures located below the crown level of the main sewer shall discharge into an approved watertight?
Sump
200
The minimum requirement for the slope of horizontal drainage pipes between manholes is,
2%
201
The area of the hole of the roof drain to effectively collect and drain rainwater in the roof is:
2 x the area of the drain pipe
202
The dome-type strainers for roof drain shall have a minimum total net inlet area of ________ to which it is connected.
1-1/2 x the area of outlet pipe
203
What are the primary materials suited for roof drains?
Cast iron and other corrosion-resistant materials
204
In terms of discharge, 1 FU represents the flow rate approximately:
7.48 gallons
205
The water service is a pipe that extends from the:
Water main to the water meter
206
Flushometer is another name for:
Flush valve
207
On most two-handle faucets, the stems:
rotate counter clockwise
208
PD 1095 prescribes that a dry standpipe is required for every building of how many floors?
4 stories or more
209
Dry standpipes shall have sufficient strength to withstand a water pressure of how much when ready for service?
20 kg/cm2
210
What do you call that point which is the unobstructed open edge of the fixture?
Rim
211
What type of end connection which is used for valves smaller than 2 inches in diameter?
Threaded
212
Which of the following is NOT a type of lavatory?
Reverse trap
213
What is the minimum depth of the building sewer when installed?
.3m
214
Caulk joint shall be firmly packed with oakum or hemp and poured with pure lead, what is that depth of lead over oakum?
25 mm
215
A building subdrain is located at what level?
Below the basement floor level
216
What is the minimum size of the fire hose outlet of an interior wet standpipe?
1 ½ inches in diameter
217
What is that system of arrangement of venting so installed that one vent will serve two traps?
Unit vent
218
What is the basic element of a cold water supply in a building?
Riser run outs
219
Which of the following is NOT a function of all faucets?
Level control
220
What is that controlled outlet in a pipeline used to discharge water or drain the system?
Blow-off
221
What is the prescribed color coding of piping under the Steam Division of a High-Pressure pipe?
Black
222
When heat is applied to water; molecular activity intensified and such particle expands in itself, followed by the change in behavior.
Increase the volume
223
Pipe materials used inside the buildings and premises shall conform to standard specifications set forth by this organization?
ASTM
224
What is that device used to prevent backflow whereby air is admitted to the supply pipe?
Vacuum breaker
225
What do you call that vents for fixtures intended to ventilate the foul odors and remove air from adjacent areas?
Local vent
226
The sanitary drainage system for public health reasons, must discharge to?
Public sewer system
227
A method of installation NOT allowed in a lateral to avoid pressure and retardation of the flow of waste water causing deposition of solid is?
Sharp curve
228
A vent that does not carry liquid or waterborne waste is called?
Dry vent
229
A vent which is also served as a drain is called?
Wet vent
230
A bacteria living or active in the absence of free oxygen is called?
Anaerobic
231
A secondary pipeline in sewerage a common sewer to which no other sewer is tributary is called?
Lateral
232
What is that device that operates automatically when refilling the water tank after each discharge and shutting off completely when the tank is already full?
Float valve
233
What is the vertical distance between the dip and crown weir of the trap?
Water trap seal
234
What do you call that process of removing the hardness causing minerals from water?
Water softening
235
Leaching field is categorized as one of the on-site efficient disposals for septic tanks. How far should be the minimum distance from shallow well to prevent contamination of water?
15.2m
236
What is the pipe connection in which a ball is held in a cup-like that allows movement in every direction?
Ball joint
237
How is water hardness measured?
Grains per gallon
238
What is that vent pipe in plumbing that serves the building drain and building sewer?
SVTR
239
The classification of water when it contains dissolved calcium salts and magnesium?
Hard
240
What is that vent pipe system on plumbing which liquid waste flow through?
Wet vent
241
What is the prescribed distance of vent from trap seal in plumbing installation?
1500 mm
242
What is the important advantage of chlorine compared to other water supply treatment?
Kills bacteria
243
The difference between a tube and a pipe is that the tube has relatively thin wall and _____.
The listed size corresponds to the outside diameter
244
What are used for disinfections large public water supplies?
Chlorine
245
The jelly-like substance being formed in the process of coagulation?
alum
246
The handicapped fixtures are usually designed for people with less physical ability than the general public. For the handicapped, what is the prescribed height of the toilet bowl?
450 mm
247
What is the pipe fitting with outside thread and projecting square head used for closing the edge of another fitting?
Plug
248
What is the process of exposing water in thin films to the oxygen of the atmosphere in order to remove or neutralize the taste, odor, and dissolved oxygen?
Aeration
249
What is the type of water closet prescribed for public toilet?
Elongated bowl type
250
What is the process of water supply purification which consists of applying certain chemicals in particles too small to be removed by plain sedimentation?
Coagulation
