Review Questions 1.1

Module 11

Information Related to Plumbing

Review Questions 1.1

1. The majority of Canadians receive their water supply by way of a public water main.

2. What method of sewage treatment would most likely be used in rural areas? A: Waste water can be piped to sewage treatment plant by way of a public sewer main or into a rural septic field by way of septic tank

3. True or False: Groundwater is no longer used as a means of water supply in Canada. A:False

4. What is a valve? A: A device to control flow of water

5. What is the term used for the valve located on city property in front of the residence? A: Curb stop valve

6. If a city residence does not have a water meter, which is the first valve that would be accessible to the homeowner inside the home? (Hint: End of “service line”) A: Building control valve

7. What does BCV stand for? A: Building control valve

8. If the BCV is completely closed, what would be the consequence? A: No water coming

9. What is a water closet? A: Supply to toilet

10. True or False: 3/8” tubing can be used for water supply to a toilet. A: True

11. The hot water supply line would not be possible without which appliance? A: Hot water tank

12. In the context of plumbing, what is a fitting? A: Connection between pipes

13. How is the cold water line split so that one line can enter the hot water tank? A: travels to a central location where a Tee fitting splits it into two lines.

14. Typically, what is the size in diameter of the supply pipes to most fixtures? A: 0.5”

15. Cold water supply should go to which side of most fixtures? A: right side

16. True or False: A hot water supply line is not needed in the case of a water closet. A: True

17. What is the minimum size (diameter) for the main building drain pipe? A:4”

18. What is a soil stack? A: A soil stack is the part of a plumbing system that connects interior plumbing to the sewer and vents gases out of a building.

19. According to the National Plumbing Code of Canada, where should the main soil stack be terminated? A: at a height no less than 150mm(6”) above the roof

20. What is the size (diameter) of the toilet drain? Bathtub?3” and 0.5”

21. What is the size of the pipe that branches off to the floor drain? 2”

22. What is the principle that drainage systems (waste systems) operate on? A: Principle of gravity

23. Which pipe material is most common for water supply systems? A: ABS and PVC

24. Water that is fit for consumption is referred to as water closet.

25. True or False: Plastic pipe materials cannot be used in a residential drainage system. A:

False

26. According to the National Plumbing Code of Canada, what is the minimum slope for a

typical drainpipe? A: from 1 1/4 “ to 4” (32mm to 100mm)

27. What is PVC? ABS? CPVC? (use internet if necessary) A: polyvinyl chloride; acrylonitrile-

butadiene-styrene; Chlorinated polyvinyl chloride

28. Why do most drainpipes require venting? A: To help drains and traps to function

properly

29. In the context of plumbing, what is a trap and what purpose does it serve? A: hold a

small amount of water at fixtures to prevent the passage of sewer gas from the

drainpipes in a living area.

30. True or False: Every fixture and drain should be equipped with a trap standard. A: False