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Which one of the following would help prevent the
escape of foul sewer gases from a water closet ?
a)Air gap
b)Vent pipe
c)Gulley trap
d)None of the above
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which one of the following would help prevent the ... moreescape of fo...
Gully trap is provided at the junction of the room or a roof drain and the other drain coming from bath, kitchen, etc. it may be P-trap or S-trap.
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Most Upvoted Answer
Which one of the following would help prevent the ... moreescape of fo...
Preventing Escape of Foul Sewer Gases from a Water Closet

Foul sewer gases can cause health hazards and unpleasant odor if they escape from the water closet. To prevent their escape, various measures can be taken, such as:

Air gap
An air gap is a physical separation between the water closet and the sewer pipe. It prevents the backflow of foul gases from the sewer into the water closet. However, it may not be practical or feasible to install an air gap in all plumbing systems.

Vent pipe
A vent pipe is a vertical pipe that connects the sewer system to the outside air. It allows the foul gases to escape outside instead of building up inside the water closet. However, the vent pipe must be properly installed and maintained to be effective. It should also be located away from windows and air intakes to prevent the gases from entering the building.

Gulley trap
A gulley trap is a U-shaped pipe that traps water to prevent the foul gases from escaping. The water creates a seal that blocks the gases from entering the water closet. However, a gulley trap can become blocked or dry out, which can allow the gases to escape.

None of the above
The correct answer is "None of the above" because none of the measures listed can completely prevent the escape of foul sewer gases from a water closet. Other measures, such as regular maintenance and cleaning of the plumbing system, proper installation of plumbing fixtures, and use of odor control devices, may also be necessary to prevent the escape of foul sewer gases.
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Community Answer
Which one of the following would help prevent the ... moreescape of fo...
Intercepting trap should be right answer.
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Which one of the following would help prevent the ... moreescape of foul sewer gases from a water closet ?a)Air gapb)Vent pipec)Gulley trapd)None of the aboveCorrect answer is option 'D'. Can you explain this answer?
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