Leakage Testing Standard for C-I-P Concrete Stormwater R/D Vaults

[UtilScott]

Does anyone test cast-in-place concrete stormwater retention/detention vaults for leakage?

Per our state department of transportation standard specifications, catch basins are to be "water tight". Placement of concrete for structures (e.g. large underground stormwater vault)"...shall leave a compact, dense and impervious concrete...".

Making a concrete structure water tight is no easy task and even AWWA standards for water reservoirs allow for some leakage. A stormwater vault is not the same as a water reservoir so those standards seem inappropriate.

 

[bimr]

Here are some examples:

http://www.mwua.org/Presentations/MalenfantAPR07.pdf

http://www.cement.org/bookstore/profile.asp?itemid=LT186

 

[UtilScott]

Thanks bimr.

 

[cvg]

generally no leak testing done here for any stormwater pipes or structures.