Nov 10, 2014· If cost of river sand is equal to cost of manufactured sand following points have to be considered:a) 25% bulk age is to be considered for wet sand. Sieving. Wastage of 25% is to be considered for oversize material. b) If organic impurities are more than 6%, sand should be washed. Washing cost is not less than Rs. for 100 CFT.
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