block c review Flashcards
1
Q
If trench walls are required to be sloped, it is at a ratio of : (horizontal : vertical)
Select one:
a.
3:4
b.
1:2
c.
1:1
d.
2:3
A
a.
3:4
2
Q
A ditch that is 4 feet 6 inches deep :
Select one:
a.
requires no shoring
b.
requires shoring and can also be worked in provided the sides of the trench are sloped to WCB Regulations
c.
can be worked in provided the sides of the trench are sloped.
d.
requires shoring
A
b.
requires shoring and can also be worked in provided the sides of the trench are sloped to WCB Regulations
3
Q
If you are installing piping in a highly corrosive soil, what would you use?
Select one:
a.
Install the piping in a frost box
b.
Use series 75 polyethylene
c.
Use the appropriate piping material
d.
Bury it in sand
A
c.
Use the appropriate piping material
4
Q
The location and elevation of a benchmark shown on a site plan denotes:
Select one:
a.
the point at which the water service enters
b.
the base point from which all levels are measured
c.
the lowest point on the project
d.
the highest elevation on the project
A
b.
the base point from which all levels are measured
5
Q
Which is the most commonly accepted method of retaining a benchmark in a concrete slab?
Select one:
a.
A brass plug
b.
A wooden plug
c.
A chalk mark
d.
A steel plate
A
a.
A brass plug
6
Q
The function of “stadia” hairs is to:
Select one:
a.
help focus the eyepiece
b.
measure distance
c.
calculate grade
d.
make the crosshairs more visible
A
b.
measure distance
7
Q
An invert elevation is taken at:
Select one:
a.
the top inside of the pipe
b.
the top outside of the pipe
c.
the bottom outside of the pipe
d.
the bottom inside of the pipe
A
d.
the bottom inside of the pipe
8
Q
A proposed septic field is less than 10 feet from a property line. You are unable to install it in any other location, or change its size. What is your best option?
Select one:
a.
Install a pump out (holding) tank
b.
Install an above ground filter
c.
Install a cesspool
d.
Install it anyway
A
a.
Install a pump out (holding) tank
9
Q
The purpose of a septic tank is to:
Select one:
a.
kill bacteria in sewage
b.
break down solids
c.
solidify effluent
d.
purify raw sewage
Feedback
A
b.
break down solids
10
Q
Anaerobic bacteria thrive:
Select one:
a.
in the presence of oxygen
b.
in the septic tank
c.
in dry, sunny locations
d.
in the disposal field
A
b.
in the septic tank
11
Q
A septic tank should retain sewage for a minimum of:
Select one:
a.
6 hours
b.
24 hours
c.
36 hours
d.
12 hours
A
b
12
Q
A distribution box serves to:
Select one:
a.
make the bell syphon trip
b.
act as an overflow
c.
distribute effluent to the field evenly
d.
act as a holding tank
A
c.
distribute effluent to the field evenly
13
Q
Which of those listed below is not a consideration when sizing a residential septic tank?
Select one:
a.
Use of garbage grinder
b.
Number of bathrooms
c.
Number of bedrooms
d.
Use of automatic clothes washer
A
b.
Number of bathrooms
14
Q
Why is a porous soil used as fill for a disposal field?
Select one:
a.
To prevent air from reaching the aerobic bacteria
b.
To allow for evaporation
c.
To allow oxygen to reach the anaerobic bacteria
d.
To allow air to reach the gravel bed
A
d.
To allow air to reach the gravel bed
15
Q
What is the name of the test that is used to determine the suitability of a disposal field?
Select one:
a.
Absorbtion Test / Bacterial Test
b.
Field Test / Lateral Test
c.
Percolation Test / Soil Analysis
d.
Water Test / Pressure Test
A
c.
Percolation Test / Soil Analysis
16
Q
What is the minimum number of test holes required to determine the absorbtion rate of a disposal field?
Select one:
a.
2
b.
3
c.
0
d.
1
A
A
17
Q
What is the most cost effective system to use for a disposal field containing 600 feet of laterals?
Select one:
a.
Bell siphon
b.
Sump pump
c.
Pump-out tank
d.
Double header
A
a.
Bell siphon
18
Q
The upper end of every soil or waste stack shall terminate in:
Select one:
a.
a vent stack
b.
a stack vent
c.
a continuous vent
d.
a header
A
b.
a stack vent
19
Q
On a 8 inch building drain, what would be the minimum size of clean out opening?
Select one:
a.
2 inch
b.
3 inch
c.
2 1/2 inch
d.
4 inch
A
d.
4 inch
20
Q
What is the maximum distance between cleanouts on a 4 inch sanitary building drain?
Select one:
a.
26 m
b.
15 m
c.
30 m
d.
52 m
A
c.
30 m
21
Q
In plumbing, the term “nominally horizontal” refers to a pipe graded to:
Select one:
a.
less than 45 degrees from vertical
b.
45 degrees from horizontal
c.
Greater than 45 degrees from vertical
d.
Greater than 45 degrees from horizontal
A
c.
Greater than 45 degrees from vertical
22
Q
A cross fitting is allowed in a plumbing system to connect:
Select one:
a.
only vertical vents
b.
only vertical drains
c.
only vent piping
d.
only horizontal drains
A
c.
only vent piping
23
Q
A pipe material not approved for interior leaders is:
Select one:
a.
asbestos-cement
b.
Copper
c.
ABS
d.
Sheet metal
A
D
23
Q
A single trap may serve a 3-compartment sink if:
Select one:
a.
it is one size larger than the largest outlet
b.
it is completely removable
c.
it is the same size as the outlets
d.
it is at least 36 inches from the farthest outlet
A
a.
it is one size larger than the largest outlet
24
ABS or PVC horizontal piping must be supported at intervals not exceeding:
Select one:
a.
900 milimeter
b.
1 meter
c.
1.5 meters
d.
1.2 meters
d.
1.2 meters
25
The minimum size vent serving a water closet is:
Select one:
a.
1 1/2 inch
b.
2 inch
c.
1 1/4 inch
d.
2 1/2 inch
a.
1 1/2 inch
26
A combined sewer carries:
Select one:
a.
sewage and subsoil drainage
b.
storm water and clear water waste
c.
sewage and clear water waste
d.
sewage and storm water
d.
sewage and storm water
27
Drainage pipes that are NPS 3 or less shall have a downward slope in the direction of flow of at least:
Select one:
a.
1 in 50
b.
1 in 25
c.
1 in 100
d.
1 in 133
a.
1 in 50
28
The vertical distance between the trap weir and the dip is the:
Select one:
a.
crown vent
b.
trap seal depth
c.
trap dip
d.
air break
b.
trap seal depth
29
What is the most cost effective system to use for a disposal field containing 600 feet of laterals?
Select one:
a.
Bell siphon
b.
Sump pump
c.
Pump-out tank
d.
Double header
A
30
The upper end of every soil or waste stack shall terminate in:
Select one:
a.
a vent stack
b.
a stack vent
c.
a continuous vent
d.
a header
B
31
On a 8 inch building drain, what would be the minimum size of clean out opening?
Select one:
a.
2 inch
b.
3 inch
c.
2 1/2 inch
d.
4 inch
D
32
What is the maximum distance between cleanouts on a 4 inch sanitary building drain?
Select one:
a.
26 m
b.
15 m
c.
30 m
d.
52 m
C
33
In plumbing, the term "nominally horizontal" refers to a pipe graded to:
Select one:
a.
less than 45 degrees from vertical
b.
45 degrees from horizontal
c.
Greater than 45 degrees from vertical
d.
Greater than 45 degrees from horizontal
C
34
A cross fitting is allowed in a plumbing system to connect:
Select one:
a.
only vertical vents
b.
only vertical drains
c.
only vent piping
d.
only horizontal drains
C
35
A pipe material not approved for interior leaders is:
Select one:
a.
asbestos-cement
b.
Copper
c.
ABS
d.
Sheet metal
D
36
A single trap may serve a 3-compartment sink if:
Select one:
a.
it is one size larger than the largest outlet
b.
it is completely removable
c.
it is the same size as the outlets
d.
it is at least 36 inches from the farthest outlet
A
37
ABS or PVC horizontal piping must be supported at intervals not exceeding:
Select one:
a.
900 milimeter
b.
1 meter
c.
1.5 meters
d.
1.2 meters
D
38
The minimum size vent serving a water closet is:
Select one:
a.
1 1/2 inch
b.
2 inch
c.
1 1/4 inch
d.
2 1/2 inch
A
39
A combined sewer carries:
Select one:
a.
sewage and subsoil drainage
b.
storm water and clear water waste
c.
sewage and clear water waste
d.
sewage and storm water
D
40
Drainage pipes that are NPS 3 or less shall have a downward slope in the direction of flow of at least:
Select one:
a.
1 in 50
b.
1 in 25
c.
1 in 100
d.
1 in 133
A
41
The vertical distance between the trap weir and the dip is the:
Select one:
a.
crown vent
b.
trap seal depth
c.
trap dip
d.
air break
B
42
The minimum seal of a trap is:
Select one:
a.
2 inches
b.
1 1/2 inches
c.
1 1/4 inches
d.
1 inch
B
43
The developed length of a branch vent shall be:
Select one:
a.
from a header to the most distant soil-or-waste pipe connection
b.
from the most distant soil-or-waste pipe connection to a vent stack, stack vent, header, or open air
c.
from open air to the most distant soil-or-waste pipe connection
d.
from a vent stack to the most distant soil-or-waste pipe connection
B
44
Developed Length" means:
Select one:
a.
measured length along the inside edge of the fittings
b.
measured length along the outside edge of the fittings
c.
measured length along the centre line of the fittings
d.
measured length along the centre line, minus the fitting allowances of the terminal fittings
C
45
The length of a continuous vent, for sizing purposes, is its developed length from:
Select one:
a.
its connection with the most distant soil-or-waste stack pipe to open air
b.
the wet vent to open air
c.
its lower end to open air
d.
the wet vent to a stack vent, vent stack, header, or to open air
D
46
A valve that prevents liquids from flowing back into a drainage system is called a:
Select one:
a.
backsiphonage preventer
b.
check valve
c.
backwater valve
d.
flapper valve
C
47
An arrangement of vents that would constitute a header would be:
Select one:
a.
two continuous vents joined together
b.
a sump vent joining a vent stack
c.
a branch vent joining into a vent stack
d.
a stack vent joining a vent stack
D
48
The minimum diameter vent serving a 2 inch trap is:
Select one:
a.
1 1/4 inch
b.
1 inch
c.
1 1/2 inch
d.
2 inches
C
49
Which of the following terms means a vent pipe that's connected at its upper end to a header, or is terminated in open air, and that is used to limit pressure differential in a soil-or -waste stack?
Select one:
a.
Branch Vent
b.
Yoke Vent
c.
Vent Stack
d.
Off-Set Relief Vent
Feedback
C
50
Which of the following terms means a vent pipe that also serves as a soil-or waste pipe?
Select one:
a.
Sump vent
b.
Island vent
c.
Wet vent
d.
Circuit vent
C
51
When a soil-or-waste stack other than a multi-storey wet vent receives discharges from more than (11) stories:
Select one:
a.
a offset relief vent is required
b.
a vent header is required
c.
a yoke vent is required
d.
the stack vent must be full size to open air
Feedback
C
52
A double sanitary ''T' fitting shall not be used to connect the trap arms of:
Select one:
a.
back-to-back kitchen sinks
b.
back outlet water closets installed back-to-back
c.
lavatories installed side-by-side
d.
a pair of three-compartment sinks
B
53
Concrete pipe shall not be used:
Select one:
a.
for a building sewer
b.
above ground outside a building
c.
underground outside a building
d.
above ground inside a building
D
54
Piping, fittings and joints used in pressure sewer, forcemain, or sump pump applications shall be capable of withstanding at least:
Select one:
a.
twice the operating pressure
b.
1 1/2 times the operating pressure
c.
1 1/2 times the maximum potential pressure
d.
150 PSI
C
55
The size of an air break shall be at least:
Select one:
a.
twice the effective opening of the faucet
b.
two inches
c.
one inch, or equal to the size of the fixture drain
d.
twice - the size of the fixture drain
C
56
Air pressures inside a drain, waste, or vent system should not vary by more than:
Select one:
a.
1 inch of mercury
b.
1 foot of water column
c.
1 inch water column
d.
1 PSI
C
57
What is the maximum number of fixture units able to be drained through a 2 inch branch?
Select one:
a.
3
b.
27
c.
12
d.
6
D
58
Every roof drain shall be securely connected to a leader and provision shall be made for:
Select one:
a.
condensation
b.
leakage
c.
expansion and contraction
d.
overflow
C
59
The maximum spacing of support for vertical piping shall be:
Select one:
a.
7.5 meters
b.
2.5 meters
c.
3.75 meters
d.
10 meters
A
60
Cast iron soil pipe and fittings shall not be used:
Select one:
a.
in a fire wall
b.
in an unheated crawlspace
c.
in a water system
d.
below a concrete slab ·
C
61
Polychloroprene flashing for a vent pipe shall be a minimum thickness of
Select one:
a.
1.73 mm thick
b.
0.50 mm thick
c.
2.89 mm thck
d.
0.56 mm thick
C
62
How many fixture units would be assigned to a branch draining a washroom with two tank-type water closets, two lavatories, a 2 inch emergency floor drain and a wall-type washout urinal?
Select one:
a.
15.5
b.
13.5
c.
11.5
d.
14
C
63
What is the minimum size of a branch serving three tank-type water closets and three lavatories?
Select one:
a.
5 inch
b.
4 inch
c.
3 inch
d.
2 1/2 inch
B
64
What is the minimum size of a branch vent serving two bathroom groups, with a developed length of 7 meters?
Select one:
a.
2 1/2 inch
b.
2 inch
c.
1 1/2 inch
d.
1 1/4 inch
C
65
What size soil-or-waste stack and stack vent are needed in a two-story building if the hydraulic load is 75 fixture units, which includes 5 water closets, and the total length of the stack vent is 4 meters?
Select one:
a.
3 inch SOWS, 1 1/2 inch stack vent
b.
4 inch SOWS, 1 1/2 inch stack vent
c.
4 inch SOWS, 4 inch stack vent
d.
4 inch SOWS, 2 inch stack vent
D
66
The maximum number of shower heads that may be drained to a single drain is:
Select one:
a.
8
b.
5
c.
6
d.
7
C
67
A vent must terminate at least:
Select one:
a.
7 ft (1.65 m) above an air inlet
b.
3 ft (1 m) above an air inlet
c.
12 ft (3.2 m) above an air inlet
d.
5 ft. (1.5 m) above an air inlet
B
68
What is the maximum number of fixture units that can discharge through a soil pipe acting as a relief vent, before a separate relief vent is required on a circuit vented system?
Select one:
a.
11
b.
6
c.
15
d.
9
B
69
A vent stack is required when a hydraulic load is received from each story of a soil-or-waste stack more than________in height.
Select one:
a.
4 Storeys
b.
11 Storeys
c.
6 Storeys
d.
2 Storeys
A
70
The minimum length of a trap arm is:
Select one:
a.
three times its diameter
b.
twice its diameter
c.
equal to its diameter
d.
there is no minimum
B
71
An 8 inch building drain carrying 1 ,700 fixture units would need a grade of at least:
Select one:
a.
1 in 133
b.
1 in 50
c.
1 in 100
d.
1 in 25
B
72
The minimum size of stack vent required for a 5 inch stack carrying a hydraulic load of 200 fixture units and a vent length of 9 meters, is:
Select one:
a.
2 1/2 inch
b.
3 inch
c.
4 inch
d.
2 inch
B
73
The sanitary tee for a 1 1/4 inch basin trap that's wet venting a water closet would be sized:
Select one:
a.
2 inch x 2 inch x 1 1/4 inch
b.
1 1/2 inch x 1 1./2 inch x 1 1/4 inch
c.
2 inch x 1 1/2 inch x 1 1/4 inch
d.
1 1/2 inch x 1 1/4 inch x 1 1/4 inch
C
74
What maximum cumulative change of direction is allowable on a trap arm for a basin?
Select one:
a.
45 °
b.
90 °
c.
135 °
d.
225 °
C
75
Which of the following traps are not permitted?
Select one:
a.
A bell trap
b.
A P-trap
c.
A drum trap
d.
A trap whose seal depth is less than 100 mm
A
76
An additional circuit vent may receive the discharge of fixtures with a maximum load of____________per fixture.
Select one:
a.
6 fixture units
b.
1 fixture unit
c.
1.5 fixture units
d.
2 fixture units
C
77
The maximum hydraulic load that can drain into a vent stack is:
Select one:
a.
1.5 fixture units
b.
6 fixture units
c.
8 fixture units
d.
3 fixture units
C
78
What is the maximum developed length of a 1 1/4 inch continuous vent?
Select one:
a.
4.5 meter
b.
9 meters
c.
7.5 meters
d.
There is no maximum length
B
79
When indirect wastes connect fixtures on three or more storeys, they must:
Select one:
a.
drain into an interceptor
b.
have their vent run independently to open air
c.
have an air gap of at least 1 pipe diameter
d.
be vented into the vent stack
B
80
What is the minimum permissible trap arm length of a vented 3 inch floor drain?
Select one:
a.
18 inches (450 mm)
b.
3 inches (75 mm)
c.
6 inches (150 mm)
d.
4 inches (100 mm)
C
81
What is the hydraulic load from a "lip" wall-hung urinal, using a 2 inch integral trap?
Select one:
a.
4 fixture units
b.
1.5 fixture units
c.
2 fixture units
d.
3 fixture units
D
82
What is the minimum permissible trap arm length of an unvented 3 inch floor drain?
Select one:
a.
4 inches (100 mm)
b.
3 inches (75 mm)
c.
6 inches (150 mm)
d.
18 inches (450 mm)
D
83
A drainage system that does not drain by gravity to the building sewer is:
Select one:
a.
a force main
b.
a subsoil drainage system
c.
back water valve
d.
a pumped sump system
D
84
A floor drain from an oil transformer room should be piped to a:
Select one:
a.
sanitary drainage system
b.
combined drainage system
c.
holding tank
d.
storm drainage system
C
85
Which of the following may be unvented ?
Select one:
a.
A floor drain, 3 inch or larger; the trap arm length is less than 450 mm (18 inches); and not too much grade on the trap arm
b.
Any floor drain in a washroom
c.
Any floor drain, provided the trap arm is not too short nor too long, and there is not too much grade on it
d.
A floor drain, 3 inch or larger; the trap arm length is at least 450 mm (18 inches) and not too much grade on the trap arm
D
86
What is the minimum horizontal distance that a vent may terminate from an openable window?
Select one:
a.
3.5 meters
b.
1 meter
c.
1.8 meters
d.
2 meters
A
87
What is the maximum load that may be drained into a 4 inch sows/wet vent?
Select one:
a.
36 fixture units
b.
12 fixture units
c.
6 fixture units
d.
4 fixture units
A
88
The purpose of a yoke vent installed in conjunction with a vent stack is to:
Select one:
a.
keep pressures in the vent stack and the soil-or-waste stack equal
b.
pressurize the vent stack
c.
relieve pressures at the base of the soil-or-waste stack
d.
vent the building drain
A
89
What is the maximum permitted change of direction between a cleanout and the drainage system it serves?
Select one:
a.
22 1/2 degrees
b.
60 degrees
c.
45 degrees
d.
90 degrees
C
90
What is the minimum distance that a vent may terminate above a roof ?
Select one:
a.
300 mm (12 inches)
b.
450 mm (18 inches)
c.
150 mm (6 inches)
d.
25 mm (1 inch)
C
91
A pipe that is connected at its lower end to a fixture drain/trap-arm and that serves a number of fixtures is a :
Select one:
a.
relief vent
b.
continuous vent
c.
stack vent
d.
circuit vent
D
92
What type of copper tubing is not permitted for drain and vent lines?
Select one:
a.
Type M hard drawn
b.
Types K and L soft
c.
Type L hard drawn
d.
Type DWV
B
93
What is the minimum permissible seal in a grease interceptor that's used as a trap?
Select one:
a.
50 mm
b.
38 mm
c.
75 mm
d.
32 mm
B
94
If a sanitary building sewer is installed at a grade of 1 in 133 and has a hydraulic load of 402 fixture units, what is its minimum permissible size?
Select one:
a.
8 inch
b.
5 inch
c.
6 inch
d.
4 inch
C
95
What is the minimum size of any drainage pipe permitted by the plumbing code ?
Select one:
a.
1/2 inch
b.
1 inch
c.
1 1/4 inch
d.
3/4 inch
C
96
Which of the following materials would not be recommended for a urinal waste line?
Select one:
a.
Copper
b.
Lead
c.
Galvanized steel
d.
Cast iron
A
97
If a 3 inch branch is 44 feet long, what is the minimum amount of total fall required? (based off minimum code requirements)
Select one:
a.
8 1/4 inches
b.
22 inches
c.
10 9/16 inches
d.
11 inches
C
98
On which of the following must one vent be higher than another?
Select one:
a.
An acid neutralizer
b.
A grease interceptor
c.
An oil interceptor
d.
A wet vent
C
99
The minimum size of a sump vent is:
Select one:
a.
1 1/4 inch
b.
2 1/2 inch
c.
2 inch
d.
1 1/2 inch
C
100
The maximum number of water closets that may connect to a multi-storey wet vent are/is:
Select one:
a.
4
b.
2
c.
1
d.
6
B
101
The location of water closet(s) on a multi-storey wet vent is:
Select one:
a.
anywhere
b.
on alternating floors
c.
on the lowest floor only
d.
on the top floor only
C
102
Where a relief vent is required for circuit vented fixtures, its' minimum size is:
Select one:
a.
one size smaller than circuit vent
b.
half the diameter of the circuit vent
c.
one size smaller than the largest trap
d.
one size smaller than the wet vent
A
103
If a yoke vent is required to connect a 6 inch soil-or-waste stack to a 4 inch vent stack, its minimum size is:
Select one:
a.
3 inch
b.
2 inch
c.
4 inch
d.
2 1/2 inch
A
104
What is the maximum temperature of waste permitted to be discharged to a drainage system?
Select one:
a.
182 °F
b.
176 °F
c.
212 °F
d.
167 °F
D
105
If a stack passes through 3 storeys and drains six tank-type water closets, eighteen bathtubs, and eight basins, what is its minimum size at it's base if 20 fixture units drain from the second storey?
Select one:
a.
5 inch
b.
4 inch
c.
6 inch
d.
3 inch
B
106
Where a horizontal offset drains fixtures from two or more floors above the offset, the minimum distance from the base of the upper stack that the fixtures may connect to the offset, is:
Select one:
a.
2.4 m
b.
1 m
c.
1.5 m
d.
3 m
C
107
In a plumbing system, vents are installed to:
Select one:
a.
prevent drafts from entering the building
b.
protect trap-seals
c.
reduce noise from drainage pipes
d.
carry sewer gases to the outdoors
B
108
Asbestos-cement DWV pipe may be- used for:
Select one:
a.
building sewers
b.
cold water lines underground
c.
hot water lines above ground
d.
cold water lines above ground
A
109
What are the test requirements for an underground sanitary building drain?
Select one:
a.
A water pressure test of 1.5 times the maximum operating pressure
b.
An air pressure test of 700 kPa for 2 hours
c.
A water pressure test at least 3 meters· in height for a minimum of 15 minutes
d.
An air pressure test of 15 PSIG for 15 minutes
C
110
Where is a clean out required for a grease interceptor ?
Select one:
a.
Downstream of the interceptor
b.
Upstream of the interceptor
c.
Internal to the interceptor
d.
Interceptors do not require cleanouts
A
111
What would the total fall be on a 26 meter building drain graded at 2% ?
Select one:
a.
624 mm
b.
520 mm
c.
260 mm
d.
.52 mm
B
112
Calculate the size of a sanitary building drain with 820 fixture units and a grade of 1/100 ?
Select one:
a.
10 inch
b.
12 inch
c.
6 inch
d.
8 inch
D
113
Calculate the size of a combined building sewer with a load of 400 liters and 270 fixture units with a 2% grade?
Select one:
a.
3 inch
b.
6 inch
c.
5 inch
d.
4 inch
D
114
Which of the following would be the best location for a sewage disposal field?
Select one:
a.
Lowest area next to a well
b.
Low lying area draining to a natural water source
c.
Elevated and well ventilated
d.
Elevated and adjacent to the house
C
115
What determines the location for a septic tank ?
Select one:
a.
Percolation rate, outdoor design temperature , size
b.
Number of bedrooms, percolation rate, height
c.
Distance from laterals, distribution boxes, buildings
d.
Distance from property lines, water sources, buildings
D
116
What determines the expected daily sewage flow for a septic tank?
Select one:
a.
The type of occupancy and the number.of people
b.
The number of kitchens and bathrooms
c.
The number and types of plumbing fixtures used
d.
The percolation rate and area available
A
117
What is the minimum permitted grade for a 6 inch sanitary building drain containing 850 fixture units?
Select one:
a.
1/133
b.
1/50
c.
1/100
d.
1/25
D
118
What is the minimum size of a floor drain that may be unvented ?
Select one:
a.
6 inch
b.
3 inch
c.
4 inch
d.
2 inch
B
119
If two 1 1/2" lines and one 2" line enter a sump, what is the minimum size of the sump vent?
Select one:
a.
2 inch
b.
1 1/2 inch
c.
1 1/4 inch
d.
.4 inch
A
120
What is the maximum length of a trap arm for a vented 3" floor drain?
Select one:
a.
3.6 meters
b.
1.5 meters
c.
1.8 meters
d.
2.4 meters
A
121
What is the minimum size of a vent serving a manhole ?
Select one:
a.
4 inch
b.
2 inch
c.
1 1/2 inch
d.
3 inch
B
122
What is the minimum dimension of a manhole at its base?
Select one:
a.
0.6 meter
b.
0.3 meter
c.
1 meter
d.
1.5 meter
C
123
What is the minimum size of trap arm serving a two-compartment laundry sink?
Select one:
a.
1 1/4 inch
b.
3 inch
c.
1 1/2 inch
d.
2 inch
C
124
What is the maximum temperature of a liquid that may discharge into a sanitary building drain ?
Select one:
a.
60 Degrees C
b.
75 Degrees C
c.
70 Degrees C
d.
65 Degrees C
B
125
What are the requirements when a clean out is required for a 10 inch diameter building sewer?
Select one:
a.
It shall be a manhole
b.
It must be 4 inch
c.
It shall e a 600 mm catch basin
d.
It must be 10 inch
A
126
What is the minimum and maximum length of a trap· arm serving a 2 inch shower?
Select one:
a.
Min. 50 mm, Max. 1.8 m
b.
Min. 50 mm, Max. 2.4 m
c.
Min. 100 mm, Max. 1.8 m
d.
Min. 100 mm, Max. 2.4 m
D
127
Where is the clean out required for a five-storey high rainwater leader?
Select one:
a.
Maximum 3 meters from the bottom
b.
Maximum 1.5 meters from the bottom
c.
Maximum 2 meters from the bottom
d.
Maximum 7.5 meters from the bottom
A
128
What is the maximum distance between clean outs on a 6 inch diameter pipe using two-way rodding ?
Select one:
a.
52 meters
b.
15 meters
c.
26 meters
d.
30 meters
A
129
If a 6 inch building drain installed at minimum grade makes contact with an immovable object at its lower end, what corrective method could be used?
Select one:
a.
Decrease the diameter to 4 inch and decrease the grade
b.
Increase the diameter to 8 inch and decrease the grade
c.
Decrease the diameter to 3 inch and decrease the grade
d.
Decrease the diameter to 5 inch and decrease the grade
B
130
What would be the volume of a septic; tank that is 3 feet wide, 5 feet long with a 3 foot drawdown?
Select one:
a.
45 cubic feet
b.
15 cubic feet
c.
35 cubic feet
d.
11 cubic feet
A
131
Which situation would require the installation of a pump rather than a siphon in the dosing chamber of a septic tank?
Select one:
a.
The laterals are more than ~00 feet long
b.
The laterals are larger than 4 inch NPS
c.
The laterals are within 3 meters of a property line
d.
The laterals are above the elevation of the dosing chamber
D
132
How close may a sanitary building drain pass under a footing?
Select one:
a.
No closer than 150 mm from the wall
b.
No closer than 100 mm from. the wall
c.
There is no specified distance provided the wall does not bear on the pipe
d.
No closer than 300 mm from the wall
C
133
When does a sanitary building drain become a building sewer?
Select one:
a.
3 meters outside of the building
b.
1 meter outside of the building
c.
2 meters outside of the building
d.
When the building drain connects to a soil-or-waste stack serving a water closet
B
134
Where a fixture or equipment discharges corrosive or acid waste, it shall discharge into a ________________that is connected to the sanitary drainage system through a trap, or an indirect connection.
Select one:
a.
storage
b.
pressure tank
c.
catch basin
d.
neutralizing tank
D
135
What is the minimum number of traps required for a two-compartment laundry tray?
Select one:
a.
4
b.
1
c.
3
d.
2
B
136
What would be the fixture unit load from an air conditioning unit that produces 0.5 liters per second of flow?
Select one:
a.
0.5
b.
12.35
c.
450
d.
15.85
D
137
Which table is used to size a sanitary building drain ?
Select one:
a.
2.4.10.6.C
b.
2.4.10.9
c.
2.4.10.6.A
d.
2.4.10.6.8
A
138
What would be the size of a storm building drain with a load of 10,000 liters in 15 minutes and graded at 1 in 200?
Select one:
a.
12 inch
b.
8 inch
c.
10 inch
d.
6 inch
B
139
When is an additional circuit vent required on a branch ?
Select one:
a.
When there is more than 6 fixture units draining through the branch
b.
When there are more than 4 fixtures
c.
When there is more than 8 fixtures between circuit vent and relief vent
d.
When there is more than 8 fixture units draining through the branch
C
140
If a fixture produces a semi-continuous flow of .75 liters per second, what would be the load on the storm sewer?
Select one:
a.
23.775 liters
b.
675 liters
c.
2360 liters
d.
0.75 liters
B
141
What would be the minimum grade of a 4 inch storm building drain with a load of 4,000 liters?
Select one:
a.
1/50
b.
1/68
c.
1/133
d.
1/100
D
142
What is the maximum length of a 3 inch trap arm ?
Select one:
a.
1.8 m
b.
3.6 m
c.
4.8 m
d.
2.4 m
B
143
What would be the load on a combined building sewer that serves 300 fixture units?
Select one:
a.
2360 liters
b.
300 liters
c.
2730 liters
d.
9510 liters
C
144
Which of the following fittings would be used to change a vertical soil-or-waste stack to horizontal?
Select one:
a.
Wye with a 1/8 bend
b.
T Y with a 1/8 bend
c.
Wye with a 1/4 bend
d.
Short radius 45
A
145
If a ladder is required for a catch basin, where should it be located?
Select one:
a.
To one side
b.
Does not matter
c.
Over the outlet
d.
Over the inlet
A
146
What would be required if a private sewage disposal system had the absorption field installed at an elevation above the septic tank?
Select one:
a.
Pump
b.
Bell siphon
c.
Distribution box
d.
Curtain drain
A
147
What is the minimum distance from a three storey soil-or-waste stack that a floor drain may connect to a sanitary building drain?
Select one:
a.
1.5 meters
b.
3 meters
c.
10 meters
d.
1 meter
Feedback
A
148
Which installation would require a backwater valve to be of the "normally open" design?
Select one:
a.
On a building drain
b.
On a branch
c.
All the options
d.
On a fixture drain
A
149
How do you perform a percolation test?
Select one:
a.
Excavate a hole until groundwater is located, then have it lab tested
b.
Dig a 4 feet x 4 feet hole 4 feet deep, look for bedrock or any large rock formations
c.
Core a 4 inch diameter hole 4 feet deep; time the water level to drop 6 inches
d.
Dig a 12 inch x 12 inch hole 22-32 inches deep, time the water level to drop one inch
D
150
If a header is used in a septic system rather than a distribution box, how should it be graded ?
Select one:
a.
Level
b.
1 %
c.
2 %
d.
3 %
A
151
An oil and gasoline interceptor must have vents connected to:
Select one:
a.
the top the sump
b.
each compartment of the sump
c.
the top at both ends of the sump
d.
the piping downstream of the sump
C
152
The basic function of a trap is to:
Select one:
a.
equalize pressures within the drainage system
b.
provide a place to catch sediment
c.
prevent sewer gases from entering the building
d.
initiate a circular motion of waste water in order to scour the piping
C
153
The standard height of the trap arm for a lavatory is:
Select one:
a.
18 inches
b.
15 inches
c.
12 inches
d.
21 inches
A
154
Which of the following materials would not be suited for draining acid waste?
Select one:
a.
Lead
b.
Pyrex
c.
Duriron
d.
Polyolefin
A
155
What is the minimum trap arm length for a three head shower?
Select one:
a.
4 inches
b.
2 inches
c.
6 inches
d.
3 inches
A
156
Which of the following fittings could be used between clean outs on a 4 inch building sewer ?
Select one:
a.
2 - 45° elbows
b.
2- 22 1/2° elbows
c.
2 - 30° elbows
d.
1 - 45° and 1 - 22 1/2° elbow
Feedback
B
