Providing and placing in horizontal layers filtering media screened, washed and cleaned as described below:- Third Layer :—– Bajri screened, cleaned and washed and graded from 6mm to 20mm (from Pathankot or approved equivalent quarry).
Providing and placing in horizontal layers filtering media screened, washed and cleaned as described below:- Third Layer :—– Bajri screened, cleaned and washed and graded from 6mm to 20mm (from Pathankot or approved equivalent quarry).