Horizontal runs of copper tubing should be supported every 4 feet.
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Q7: Plastic vent pipe run vertically must be
Q8: Vent terminals above the roof may be
Q9: The trap seal keeps sewer gases in
Q10: In general, piping materials suitable for drainage
Q11: Yoke vents can be used on only
Q13: All horizontal vent piping should be installed
Q14: To prevent siphoning, trap arms should be
Q15: A continuous vent is one that remains
Q16: Benefits of a venting system include
A) encouraging
Q17: Vents should be located under roof overhangs
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