Question 5002 of 229 · California Water Distribution Operator Exam
What is a main advantage of ductile iron pipe?
Exactly one answer is correct.
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Correct answer to question 5002
- D: High strength and resistance to impact and pressure
Explanation
Ductile iron handles high pressure and traffic loads but can corrode in aggressive soils, so polyethylene encasement or coatings are common.
More questions: Water Mains and Piping
- 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?
- 5008What is the purpose of flushing a main?