What is Trap And Their Location & Function - Civil Engineering

Saturday, 30 June 2018

What is Trap And Their Location & Function

What is Trap And Their Location & Function

A trap is a sanitary fitting provided at the end of a soil pipe or waste pipe to prevent the passage of foul gases through it. The efficiency and effectiveness of a trap depend upon the depth of the water seal maintained by the trap. This water seal generally varies from 25 mm to 75 mm.

Function Of Trap

In a drainage system, the function of a trap is to prevent the passage of foul gases through it. But at the same time, it allows the sewage to flow through it. Thus, the installation of a trap avoids nuisance.

Location Of Trap

The trap is located in the following manner:

1) Gully Trap

This trap is provided at the junction of a room or roof drain and the other drain coming from bathrooms, kitchens etc.

2) Floor Trap

These trap are generally placed in the floor of rooms,  kitchens, sinks, bathrooms etc to admit waste water into the waste pipe.

3) Intercepting Trap

An intercepting trap is often provided at the junction of a house sewer and a municipal sewer.

4) Master Trap

This trap is provided at the water closet.
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