Residential Drainage Waste And Vents Jncluding Subsoil Sumps And Backwater Valves

Question 1

These fixtures are required by the Alberta building code in every building

Answer 1

Water closet, bathtub, or shower, laboratories, and kitchen sinks

Question 2

Garbage grinders and dishwashers must be installed with what

Answer 2

A trap

Question 3

How much waterline should be coiled up behind a refrigerator?

Answer 3

Enough, so it can be pulled out from the wall without damaging the waterline

Question 4

What’s an uncommon way of preventing backflow?

Answer 4

Gate valve may be used in the branch

Question 5

What should weeping tiles be installed on?

Answer 5

Washed rock 1 inch
Covers in area, 12 inch horizontal and vertically around the pipe

Question 6

What three items should be installed in the discharge line of a sump pump in order

Answer 6

Union,check valve, ball valves

Question 7

With the sewage pump when explosive gases are present the vent must be terminated how

Answer 7

Separately through the roof, one size smaller than the largest inlet into sump

Question 8

If a sump does not have an automatic automatic controls, how must it be sized?

Answer 8

Enough to hold 24 hours of sewage

Question 9

For sump pumps, how are they typically sized?

Answer 9

The outlet size on the pump typically determines

Question 10

How often should a sump pump be serviced?

Answer 10

Three times a year at least

Question 11

How do you calculate the hydraulic load from a fixture that produces a continuous or semi continuous flow such as a pump or air conditioner?

Answer 11

31.7 fixture units for each litre per second of flow

Question 12

What’s an important rule for sizing the diameter of a stack vent?

Answer 12

May not be less than 1/2 the size of the soil or waste stack at space