DRAINAGE WASTE VENTS

Question 1

where is the Cleanout required for a 5 storey rwl _m

Answer 1

3m from the bottom

Question 2

minimum and max length of a trap arm serving 2” shower _mm _m

Answer 2

100mm
2.4m

Question 3

maximum temperature of a liquid that may discharge into a sanitary building drain

Answer 3

75 degrees

Question 4

what maximum cumulative change of direction is allowable on a trap arm for a basin

Answer 4

135

Question 5

maximum horizontal distance a vent may terminate from openable window

Answer 5

3.5m

Question 6

what type of copper tubing is not permitted for drain and vent lines

Answer 6

K,L SOFT

Question 7

when an additional circuit vent required on a branch

Answer 7

more than 8 fixtures (not units)

Question 8

standard height of trap arm for lav is

Answer 8

18”

Question 9

the size of air break shall be at least

Answer 9

1 inch or size of the fixture drain

Question 10

A relief vent is required when more than how many fixtures units discharge past a circuit vent

Answer 10

6 fu

Question 11

Air pressure inside a drain, waste, vent should not vary by more than

Answer 11

1” wc

Question 12

the minimum size of an additional relief vent or circuit vent must be __ small than required size but not larger than

Answer 12

one size smaller but not larger than 2”

Question 13

how many wet vented wc are permitted on the same soil waste pipe

Answer 13

2

Question 14

which joining procedure is used for plastic pipe on natural gas service

Answer 14

thermal fusion

Question 15

what is placed in cold water inlet on HWT to prevent cold water being drawn from water faucet

Answer 15

dip tube

Question 16

cleanout serving fixture in health care facility shall be located __inch minimum above flood lvl rim

Answer 16

6”

Question 17

which meter is 2 meters in one

Answer 17

compound

Question 18

max distance between cleanouts on a 4” SBD _M

Answer 18

30M

Question 19

a single trap may serve a 3 compartment sink if

Answer 19

it is one size larger than the largest outlet

Question 20

asbestos cement DWV pipe may be used for

Answer 20

building sewer

Question 21

what type of piping used to drain lines from a hospital laboratory

Answer 21

pyrex

Question 22

Minimum size event serving a water closet is

Answer 22

1 1/2”

Question 23

the vertical distance between the trap weir and dip is the

Answer 23

trap seal depth

Question 24

drainage piping of 3” or less grade at least

Answer 24

1:50

Question 25

boiling point of water is

Answer 25

212

Question 26

how is the base inside a poured in place sanitary manhole constructed

Answer 26

channeled in direction of flow

Question 27

which joining procedure is only approved for water service below ground and outside building

Answer 27

compression fitting

Question 28

which device in a water tube boiler will direct the air to an expansion tank connection

Answer 28

bourdon tube

Question 29

every caulked lead drainage joint shall be firmly packed with ___ with depth of ___mm

Answer 29

oakum 25mm

Question 30

ready rod size t0 support 2" or less _mm

Answer 30

6mm

Question 31

ready rod size to support 4" or less __mm

Answer 31

8mm

Question 32

ready rod size to support over 4" __ mm

Answer 32

13mm

Question 33

extracted tees branch is at least __ than the tube in which tee is formed

Answer 33

one size smaller

Question 34

soil or waste stack that serves more than 6 wc shall not be less than "

Answer 34

4"

Question 35

max hydraulic load that can drain into a vent stack

Answer 35

6 fu

Question 36

minimum length of a trap arm is

Answer 36

twice its diameter

Question 37

___ joints shall not be used for hard drawn copper tube

Answer 37

flared joints

Question 38

not more than __ showers heads shall be served a by a single drain

Answer 38

6

Question 39

when a soil or waste stack other than a multi-storey wet vent receives discharge more than 11 storeys

Answer 39

yoke vent

Question 40

The temperature of water discharge into a bathtub shall not exceed __ c

Answer 40

49

Question 41

oil interceptor minimum size vent

Answer 41

1 1/4

Question 42

oil interceptor vents min distance between both outside __mm

Answer 42

300 mm

Question 43

max trap arm length for 1 1/4 _m

Answer 43

1.5m

Question 44

max trap arm length for 1 1/2 _m

Answer 44

1.8m

Question 45

max trap arm length for 2 _m

Answer 45

2.4m

Question 46

max trap arm length for 3 _M

Answer 46

3.6m

Question 47

max trap arm length for 4 _m

Answer 47

9.8m

Question 48

sump vent is 1 size smaller than drain pipe but minium size of vent is

Answer 48

2inch

Question 49

minimum size of vent stack and stack vent shall be __ the size of soil or waste stack at its bottom

Answer 49

1/2 the size

Question 50

offset dies not exceed __m for 2" or smaller and __m for larger than 2"

Answer 50

1.2 = 2" or smaller 2.5 2" larger than 2"

Question 51

number of threads for 1/16 to 1/8

Answer 51

27 tpi

Question 52

number of threads to 1/4 to 3/8

Answer 52

18

Question 53

number of threads 1" to 2"

Answer 53

11 1/2

Question 54

number of threads 4" above

Answer 54

8

Question 55

1m = ___mm

Answer 55

1000mm

Question 56

Where we use shut off on softener

Answer 56

upstream

Question 57

size of air gap

Answer 57

2x the diameter of pipe but never less than 1"

Question 58

min temp of hwt

Answer 58

60 degrees

Question 59

I

Answer 59

D