block c pvc review Flashcards
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.
3:4
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
b.
requires shoring and can also be worked in provided the sides of the trench are sloped to WCB Regulations
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
c.
Use the appropriate piping material
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
b.
the base point from which all levels are measured
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 brass plug
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
b.
measure distance
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
d.
the bottom inside of the pipe
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.
Install a pump out (holding) tank
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
b.
break down solids
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
b.
in the septic tank
A septic tank should retain sewage for a minimum of:
Select one:
a.
6 hours
b.
24 hours
c.
36 hours
d.
12 hours
b
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
c.
distribute effluent to the field evenly
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
b.
Number of bathrooms
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
d.
To allow air to reach the gravel bed
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
c.
Percolation Test / Soil Analysis
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
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.
Bell siphon
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.
a stack vent
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.
4 inch
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.
30 m
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.
Greater than 45 degrees from vertical
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.
only vent piping
A pipe material not approved for interior leaders is:
Select one:
a.
asbestos-cement
b.
Copper
c.
ABS
d.
Sheet metal
D
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.
it is one size larger than the largest outlet
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
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
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
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
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
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
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
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
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
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
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
A pipe material not approved for interior leaders is:
Select one:
a.
asbestos-cement
b.
Copper
c.
ABS
d.
Sheet metal
D
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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