Providing and placing in horizontal layers filtering media screened, washed and cleaned as described below:- Fourth Layer :—– Bajri (Coarse) screened, cleaned and washed and graded from 20mm to 25mm (from Pathankot or approved equivalent quarry).
Providing and placing in horizontal layers filtering media screened, washed and cleaned as described below:- Fourth Layer :—– Bajri (Coarse) screened, cleaned and washed and graded from 20mm to 25mm (from Pathankot or approved equivalent quarry).