Plumbing Inspection Section#3 Drain, Waste and Vent Plumbing Quiz#4

You should have finished Study Session 3 before starting this study session. This study session continues the discussion of problems found with drain, waste and vent piping.

The estimated completion time is one hour.

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

• List eleven problems found with drain, waste, and vent piping, as describe in this session.

• Question 1

  Needs Grading

  	Describe a standpipe for a clotheswasher drain.
  	Selected Answer: 1. Vertical pipe that receives the clothes washer drain hose 2. A trap 3. A trap arm that attaches to a vented stack Correct Answer:   A vertical pipe that receives the clothes washer drain hose, a trap, and a trap arm that attaches to a vented stack. Response Feedback: [None Given]

• Question 2

  Needs Grading

  	List the five manufacturers? names you may find stamped on defective ABS pipe.
  	Selected Answer: 1. Centaur (Phoenix) 2. Gable 3. Polaris 4. Apa Correct Answer:   Centaur, Phoenix, Gable, Polaris, Apache Response Feedback: [None Given]

• Question 3

  Needs Grading

  	What is the implication of poor manifolding?
  	Selected Answer: clogging of p Correct Answer:   Clogging of pipes Response Feedback: [None Given]

• Question 4

  Needs Grading

  	What is the purpose of an air gap in a dishwasher drain?
  	Selected Answer: This air gap fitting prevents contamination of the potable water supply where it joins the dishwasher in the event that waste backs up through the dishwasther drain hose. Correct Answer:   To prevent a cross connection Response Feedback: [None Given]

• Question 5

  Needs Grading

  	Where should the condensate drain from an air conditioner discharge?
  	Selected Answer: An indirect waste using an air gap must be provided.  Correct Answer:   To a fixture drain, upstream of the fixture trap, into the overflow connection of a tub, or onto a floor drain grate, with an air gap. Response Feedback: [None Given]

• Question 6

  Needs Grading

  	Why is PVC or ABS plastic piping allowed only in single family homes usually?
  	Selected Answer: Because they are combustible Correct Answer:   It is combustible Response Feedback: [None Given]

• Question 7

  Needs Grading

  	Why is the standpipe for a clotheswasher drain necessary?
  	Selected Answer: To avoid cross connection Correct Answer:   This standpipe arrangement prevents a cross connection that occurs when the washer drain hose is hooked over the side of a laundry tub. Response Feedback: [None Given]

• Question 8

  0 out of 0 points

  	When was defective ABS plastic drain, waste and vent piping manufactured?
  	Selected Answer:   1985 to 1986 Answers: 1970 to 1975 1980   1985 to 1986 1990 to 1993 1970 to present Response Feedback: Good work

• Question 9

  0 out of 0 points

  	Pipe size should always increase as you move downstream and more fixtures join in.
  	Selected Answer:  True Answers:  True False Response Feedback: Good work