How To Do A Flow Test On A Septic System How to Test Drainage Pipes After Laying

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How to Test Drainage Pipes After Laying

Drainage pipes start from the first manhole or inspection chamber to the septic tank or sewage system. After laying the pipes, it is necessary to test the drains before use. Every part between the shafts should be examined. It is advisable to do this at least twelve hours after the last pipe has been connected. There are different methods of checking the system. This ensures that the system is airtight to avoid unpleasant odors and leakage along the lines.

Testing of drainage pipes after laying begins with the following method. First, the lower end of the pipe and all connections are securely stopped. Then it is filled with water along its entire length. After filling with water, the plug is inserted into the top leaving the pipe attached with the drain plug. This pipe is bent at ninety degrees and ends at an elevated tank. The vertical height distance must be at least one meter. This will give gravity flow.

When testing drainage pipes, water is poured into the tank. This stays put for at least three hours. Enables absorption. After this time, the tank is refilled and testing begins. After the thirty minute period has elapsed, check the water level in the tank. The water level in the tank should not drop. If it fell by that millimeter, the test is satisfactory. Give it an hour and check the levels.

After testing the drain pipes and they fail the test, check the location of the leak. It is important to note that the tests are performed on pipes laid in trenches, but not covered. The location of the leak is then noted and repaired. This is achieved by means of a solid concrete frame with fine aggregates. A minimum cover of one hundred and fifty millimeters is made. The tests are then repeated and confirmed. After passing the test, the trenches are backfilled.

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