sewer lateral testing
sewer lateral testing
(OP)
My project involves renovating Military Family Homes. We do a complete demo of underground utilities in the units, then provide new sewer lateral connections within 15' of the unit to the existing lateral.
Question #1. Is there any criteria/requirements for testing these new lateral connections?
Question #2. Part of this project involves some new sewer main lines. After accomplishing the tests per ASTM C 969, are there any requirements on testing the new "complete" laterals?
Any and all help is greatly appreciated. Thanks in advance.
Question #1. Is there any criteria/requirements for testing these new lateral connections?
Question #2. Part of this project involves some new sewer main lines. After accomplishing the tests per ASTM C 969, are there any requirements on testing the new "complete" laterals?
Any and all help is greatly appreciated. Thanks in advance.





RE: sewer lateral testing
RE: sewer lateral testing
The concern that the inspector has, is that after backfilling the lateral, how do we know if there was damage at the connection point. I'm concerned that the inspector will try to make me test the entire line again. But the specs only require a 2' head above the crown of the pipe in the manhole, and this is always much lower than the laterals ofcourse. So this does not affect the lateral.
Konwing that the test for the main line is due to the fact that water/waste has a chance to lay in the line, where as the laterals slope so much, water doesn't have a chance to sit/leak.
I can't find anything on lateral testing or requirements for such.
RE: sewer lateral testing
Similar arrangments may be made on reconstruction if desired. Then a low pressure air test (3.5 psig) can be performed after backfilling.
There are standard test procedures and leakage allowance tables published widely. Google leakge testing of sanitary sewers to find them.
good luck
RE: sewer lateral testing
That is usually the only test done on a sewer line since if there are any significant leaks they will be observable in the form of an observable defect or misalignment of the pipe.
We also usually only camera test the main and not a lateral (I am assuming that you are referring to a house service lateral and not a main line lateral here.) We can rotate the camera to look into the connection and have available smaller camera’s that will go into a 100 mm service lateral if necessary but this is seldom used.
It also allows you to find the location and fix it.
Rick Kitson MBA P.Eng
Construction Project Management
From conception to completion
www.kitsonengineering.com
RE: sewer lateral testing
While I'm aware of the testing methods, I'm trying to find out if there are "requirements" in the code to perform lateral testing. That is the lateral from the house to the main.
RE: sewer lateral testing
RE: sewer lateral testing
Thanks again for the interest.
RE: sewer lateral testing
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: sewer lateral testing
The flange is JIS 10 K standard, while the pipe has pressure of 10 bar only. What I want to know for jointing the flanges are :
1. Is it necessary to place 2 washers behindboth bolt head and nut?
2. Is it necessary to place coil spring, if it is necessary, where do I have to put the coil spring?
3. What is the role of washer and spring in this case? because I never use them before for small flange joint.
Any kind of reply would be appreciated.
RE: sewer lateral testing
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: sewer lateral testing