Plumbing Inspection Section#1 Supply Plumbing Quiz#1

This study session outlines the scope of plumbing inspections as set out in the ASHI®/CAHI Standards of Practice (note: ASHI® stands for the American Society of Home Inspectors; CAHI stands for the Canadian Association of Home Inspectors). This session also includes some comments on the Standards and a discussion of the basic principles of plumbing.

The estimated completion time is one hour.

Objectives
At the end of this study session, you should be able to:

• Name the four basic components of the plumbing system that have to be inspected to meet the Standards.
• List five things the Standards do not require an inspector to observe in a plumbing inspection.
• Describe functional flow in one sentence.
• Describe in three sentences the flow of water through the house from its point of entry to its point of exit, including the function of the vent piping.
• List three things that can go wrong with supply piping.
• List four factors which affect the pressure or flow at a fixture.

• Question 1

  Needs Grading

  	Describe briefly how pressure and flow are related.
  	Selected Answer: 1. When there is no water flowing, there will be lots of pressure ready to push water out of the pipe 2. As water flows, pressure will be reduced Correct Answer:   Pressure and flow are inversely related: pressure drops as flow rate increases. Response Feedback: [None Given]

• Question 2

  Needs Grading

  	List at least four factors which affect the volume of water at the tap.
  	Selected Answer: 1. Pipe size 2. Smoothness of inside of pipes 3. Number of changes in direction 4. Pressure 5. Height Correct Answer: - Pipe diameter - Smoothness of the inside of the pipe - Straightness of the inside of the pipe - Static pressure - Flow rate - Effect of gravity on flow Response Feedback: [None Given]

• Question 3

  Needs Grading

  	What are three things that go wrong with water supply?
  	Selected Answer: 1. Leaks 2. Not enough water 3. Dirty water Correct Answer:   - Pressure or flow is insufficient - Leaks - Dirty water Response Feedback: [None Given]

• Question 4

  Needs Grading

  	What is static pressure?
  	Selected Answer: Static pressure is how hard the water is being pushed at the source. (The pressure available at the source) Correct Answer:   Static pressure is the pressure exerted by the water on the walls of the pipe when no water is flowing. Response Feedback: [None Given]

• Question 5

  Needs Grading

  	Why is static pressure not a particularly good indicator of pressure in the house?
  	Selected Answer: Four other factors also impact water pressure 1. Pipe size.  2. Static pressure 3. The volume of water we are trying to move 4. Pushing water uphill 5. Undersized pipe 6. Rusted pipes 7. Obstructions 8. Leaking 9. Excess pipe length 10. Elevation losses Correct Answer: Static pressure does not consider the size and condition of the pipes inside the house, nor how high up the water needs to be pushed. It doesn?t suggest how the system will perform with water flowing. Response Feedback: [None Given]

• Question 6

  0 out of 0 points

  	An inspection done to the Standards requires us to look at all of the following except
  	Selected Answer:   private waste disposal systems Answers: drain, waste and vent systems fuel storage and distribution systems fixtures and faucets   private waste disposal systems water heating equipment Response Feedback: Good work

• Question 7

  0 out of 0 points

  	We are required to determine whether the waste disposal system is public or private.
  	Selected Answer:  False Answers: True  False Response Feedback: Good work

• Question 8

  0 out of 0 points

  	We are required to operate the main shut off valve in the house.
  	Selected Answer:  False Answers: True  False Response Feedback: Good work

• Question 9

  0 out of 0 points

  	We have to report on the functional flow in a house in each bathroom.
  	Selected Answer:  False Answers: True  False Response Feedback: Good work