DWV

Question 1

According to the national plumbing code of Canada, what is the maximum permissible developed length of a fixture outlet pipe?

Answer 1

1200 mm

Question 2

What will be the minimum required size of the drain pipe on a stack if it is serving three tank type bathroom groups, draining to a stack branch that connects to the top of the soil. Waste on the floor above the first bathroom group.

Answer 2

4 inch

Question 3

Where must a relief and connect when circumventing

Answer 3

To the circuit vented branch downstream of the most downstream circuit vented fixture

Question 4

What is the maximum number of water clauses that can be served by a wet vent?

Answer 4

2

Question 5

From a branch vent how do you figure out the develops length?

Answer 5

The length from the branch vent to the for this fixture

Question 6

What relationship does the sizing of a relief and have with

Answer 6

The relief bin must be one size smaller

Question 7

Circumvented branch must be

Answer 7

Horizontal

Question 8

Maximum load to a relief fent is how many fixture units

Answer 8

Six

Question 9

Can you have a loop vent under flood level rim?

Answer 9

Yes

Question 10

Floor drains under 450 mil need to be vented true or false

Answer 10

True

Question 11

Stack vents need to be

Answer 11

Nominally vertical

Question 12

What is the minimum size of a wet portion of an additional circuit vent?

Answer 12

2 inch

Question 13

Circumvented branches installed on the main floor of a building with one circuit vent and relief vent. What is the maximum change in direction between the circuit vent and the relief vent connections on the circuit vented branch?

Answer 13

45°

Question 14

What is the maximum load permitted to drain into a circuit vent from one fixture?

Answer 14

1.5 fixture units.

Question 15

When two water causets are being served by a horizontal wet vent, how much they connect to the wet vent

Answer 15

With the double wye if the vent pipe is horizontal

25211C

Question 16

If you have a stack with four stories with a bathroom group on each floor, what size can clean out be at the base of the stack?

Answer 16

3 inch

Question 17

A wet vent bathroom group is acting as a relief vent for a circuit vented branch that has water closets, draining into it. What will be the size of the clean out serving the relief vent

Answer 17

3 inch

Question 18

When must a a additional circuit vent be installed?

Answer 18

When there is more than eight circuit vented fixtures between the circuit vent, and the relief vent

Question 19

A shower trap that is 2 inch is draining to a circuit vented branch. What is the maximum change of direction permitted on the trap arm for the shower from the showers trap weir to the circuit vented branch

Answer 19

135°

Question 20

Where event pipe passes through a roof It’s subject to frost closure. What can be done to prevent this from

Answer 20

Increase the diameter of the vent pipe by at least one size, but not less than 3 inches

Question 21

The upper end of every store wheeler waste stack she’ll terminate to a

Answer 21

Stack vent

Question 22

Is the length of a wet vent limited by any means

Answer 22

No

Question 23

What is the national plumbing code for minimum size vent for a fixture vent?

Answer 23

25552

Question 24

What is the maximum trap arm change of direction

Answer 24

135°

Question 25

What is the minimum trap sealed depth?

Answer 25

Inch and a half or 38 mm

Question 26

What is the order of the parts for an individual vented kitchen sink, drain starting at the kitchen sink

Answer 26

Basket, strainer, fixture outlet pipe, P-trap trap arm fixture drain