Review #3

Question 1

The maximum permitted length of a fixture outlet pipe is

Answer 1

1200 mm

Question 2

The outside water, sanitary and storm drain piping is shown on the ____ plan

Answer 2

Site plan

Question 3

Measurements for floor heights and drop ceilings, for rough in purposes, are taken from the building _________ drawing

Answer 3

Cross sectional elevation drawing

Question 4

Which of the following tests may be used on a completed job to test the fixture settings
A. Water test
B. Air test
C. Vacuum test
D. Final test

Answer 4

D. Final test

Question 5

The minimum temperature required in the water supply to a commercial dishwasher, to ensure bacteria kill is

Answer 5

82 ‘C (180 ‘F)

Question 6

When water runs continually into the overflow tube in a water closet tank, the fault is likely in the ___ valve

Answer 6

Ballcock valve

Question 7

Which of the following traps are not permitted
A. A trap with a trap seal depth less than 100mm
B. A drum trap
C. A “p” trap
D. A bell trap

Answer 7

D. A bell trap

Question 8

What is the maximum number of 90 degree bends which may be used on the trap arm from a water closet?

Answer 8

Two

Question 9

The minimum size of a yoke vent, used in conjunction with a vent stack, shall not be less than

Answer 9

The smallest pipe to which it is connected

Question 10

Number of FU allowed to drain to the lower end of a vent stack is

Answer 10

8 FU

Question 11

In reference to a hot water heating system, the type of air vent required to be used on an inaccessible main would be a ____ vent

Answer 11

Float vent

Question 12

A hydro massage tub has which of the following?
A. A 2” trap
B. Jets above the water line
C. Correctly sized supply lines
D. One vacuum breaker

Answer 12

C. Correctly sized supply lines

Question 13

The type of copper most used in a residential hot water heating system is type ____

Answer 13

Type M

Question 14

The type of copper tube found in the radiation of a hot water heating system is type ___

Answer 14

Type H

Question 15

The length of a standard pipe wrench is measured between

Answer 15

The face of the heel jaw and the end of the handle

Question 16

To prevent overflow in a sink that is not fitted with an integral overflow, it is accepted to use a

Answer 16

Standing waste

Question 17

The maximum number of water closets that may drain to a 3” SOWS is

Answer 17

6

Question 18

What is the minimum distance a vent may terminate from a property line, other than a property line adjacent to a street?

Answer 18

1.8m

Question 19

When indirect wastes connect fixtures on three or more storeys, they must have a vent that

Answer 19

Terminates separately

Question 20

An invert elevation would be an elevation at the ____ of the pipe

Answer 20

Bottom inside

Question 21

The maximum distance allowed from the trap to the vent is measured from

Answer 21

Trap weir to vent fitting

Question 22

What is the minimum permissible arm length for an unvented 3” floor drain?

Answer 22

18” (450 mm)

Question 23

What is the minimum horizontal distance that a vent may terminate from an opening window?

Answer 23

3.5 m

Question 24

What is the minimum distance that a flow meter should be installed from a fitting?

Answer 24

5 pipe diameters upstream
10 pipe diameters downstream

Question 25

What is the minimum distance a vent pipe shall terminate above a roof?

Answer 25

6” (150 mm)

Question 26

What is the minimum distance any vent may terminate above ground?

Answer 26

2m

Question 27

Minimum distance a vent may terminate above an opening door or window, or an air inlet if the vent is too close horizontally?

Answer 27

1m

Question 28

Minimum size of a clean out on a 4” branch

Answer 28

3”

Question 29

An expansion tank for a hot water heating system should be able to accommodate what extra percentage of volume for expansion of water?

Answer 29

3%

Question 30

A pipe that is connected at its bottom end to a fixture drain and serves a number of fixtures is called a _____ vent

Answer 30

Circuit

Question 31

The type of heating system most likely to be used in an apartment building would be a ____ return

Answer 31

Reverse

Question 32

The most upstream valve on a water service is the

Answer 32

Corporation cock

Question 33

Which type of copper tube is only produced as hard-drawn type?

Answer 33

Type DWV

Question 34

The type of copper tubing not permitted for vent and drain lines is ____ drawn types ____

Answer 34

Soft drawn types K and L

Question 35

An end switch is a component of which type of heating control?

Answer 35

Zone valve

Question 36

If there is a vent on the flow control fitting, where should this vent terminate?

Answer 36

Tee it back to the general venting system

Flow control (grease interceptor)

Question 37

Water is the most dense at

Answer 37

4 ‘C (39 ‘F)

Question 38

The minimum size of a sump vent is

Answer 38

2” (max 4”)

Question 39

What may allow a fixture to self-siphon?

Answer 39

Trap too far below fixture

Question 40

What is the maximum permitted flow rate to a shower head?

Answer 40

7.6 litres/min

Question 41

Except for column showers, what is the minimum dimension between two adjacent shower heads?

Answer 41

750 mm (2 1/2 feet)