Civil Engineering - Waste Water Engineering - Discussion
Discussion Forum : Waste Water Engineering - Section 6 (Q.No. 5)
5.
For drainage pipes in buildings the test applied before putting them to use, is
Discussion:
11 comments Page 2 of 2.
Alpesh mali said:
3 years ago
The laid pipes are usually tested to ascertain the water-tightness of the pipes and joints. There are three tests that are commonly performed to test leakage of the pipes and are as follows:.
(i) Air Test - Generally used to test underground and vertical pipes. The escape of air from the leaky joint form bubbles that can be seen visually.
(ii) Water Test - Most commonly used for underground house sewer pipes. The drain is plugged at the lower end and the water is filled in the pipe through the upper manhole to maintain a pressure of 1 to 1.5 m depth of water. If there is no drop in water level in 10 minutes, then there is no leakage from the pipe.
(iii) Smoke Test - Generally used to detect leakage of existing vertical sullage pipes or rainwater pipes. In this test, smoke is forced into the pipe with the help of a blower to test the leakage.
(i) Air Test - Generally used to test underground and vertical pipes. The escape of air from the leaky joint form bubbles that can be seen visually.
(ii) Water Test - Most commonly used for underground house sewer pipes. The drain is plugged at the lower end and the water is filled in the pipe through the upper manhole to maintain a pressure of 1 to 1.5 m depth of water. If there is no drop in water level in 10 minutes, then there is no leakage from the pipe.
(iii) Smoke Test - Generally used to detect leakage of existing vertical sullage pipes or rainwater pipes. In this test, smoke is forced into the pipe with the help of a blower to test the leakage.
(1)
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