060102a Introduction to Plumbing - Basic Single Family Dwelling

Question 1

Minimum building sewer pipe diameter

Answer 1

4”

Question 2

Minimum size of the main building cleanout

Answer 2

4”

Question 3

Minimum roof flashing size

Answer 3

20x20

Question 4

The portion of a fixture drain between the trap weir and the vent pipe fitting

Answer 4

Trap Arm

Question 5

The pipe that connects a trap serving a fixture to another part of the drainage system

Answer 5

Fixture Drain

Question 6

Minimum trap seal depth

Answer 6

38mm (50mm Acid)

Question 7

Minimum trap arm length

Answer 7

2 pipe diameters

Question 8

Minimum fall on a trap arm

Answer 8

1 pipe diameter

Question 9

Minimum trap arm length of a 3” or larger floor drain tied to a building drain

Answer 9

18”

Question 10

Maximum change of direction on a trap arm

Answer 10

135º

Question 11

Maximum change of direction on a toilet trap arm

Answer 11

225º

Question 12

Maximum vertical drop and horizontal run on toilet

Answer 12

1m (39”) drop, 3m (10’) run

Question 13

Minimum roof penetration pipe diameter

Answer 13

4”

Question 14

Every building in which plumbing is installed shall have one main vent that is not less than __________ in diameter.

Answer 14

3”

Question 15

Maximum change of direction between cleanouts

Answer 15

45º

Question 16

Good plumbing practice would be to maintain a horizontally measured distance of __________ from the base of the stack to the connection of the floor drain.

Answer 16

1.5m (5’)

Question 17

Maximum and Minimum laundry stand pipe length

Answer 17

600mm (24”) - 1200mm (48”)

Question 18

Maximum fixture units permitted on a 3” building sewer

Answer 18

27 FU’s