Question 5001 of 229 · California Water Distribution Operator Exam
Which of these pipe materials is used for gravity sewers rather than pressurized water mains?
Exactly one answer is correct.
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Correct answer to question 5001
- B: Vitrified clay pipe
Explanation
Vitrified clay is used for gravity sewers, not pressurized drinking water. Ductile iron, PVC and HDPE are all used for water mains.
More questions: Water Mains and Piping
- 5002What is a main advantage of ductile iron pipe?
- 5003Why is polyethylene encasement used on ductile iron pipe?
- 5004Which pipe material resists corrosion but can become brittle in sunlight and must be stored out of UV exposure?
- 5005Why must asbestos-cement (AC) pipe be cut with wet methods or hand tools?
- 5006Which pipes are likely to have lead solder or lead goosenecks in older service lines?
- 5007Which is the main reason to keep mains and service lines of dissimilar metals separated by dielectric fittings?