Standard procedure for hydrotest on rcc water retaining structures?
As per I.S code 3370 part I & II, there is 40mm tolerance
for leakage for R.C.C structures. following method are used for
measuring the leakage.
1) if the tank capacity more 6ml, tank should be fill by 1/3 for
reading step by step and tress the leakages.
2) After tress, mark the spot and use appropriate method for
attend the same. such as epoxy grouting, epoxy material and any
other method which is suitable as per site condition.
3) take reading with pizometer and subtract the reading which is
received from evaporation pan. take final reading. reading is taken
after 24 Hr up to seven day.
Adopt this procedure for hydro testing of R.C.C structure. if
leakage found more than 40mm. whole procedure should be repeat
again.