Details: supply and carriage of washed special sand from source to site of work including carriage and en route taxes for filter bed.(rate to quoted by contractor) supply of washed special graded stone aggregate of different size from 4mm to 10mm, 10mm to 12.5 mm, 12.5mm to 25mm, 25mm to 32mm, 32mm to 40mm & 40mm to 50mm for filter bed.(rate to quoted by contractor) labour charges for extraction of old filter media by way of filling in ec bags and disposal of same through head load incl. providing with new filter media by repeating the same process.(rate to quoted by contractor)(a) sand labour charges for extraction of old filter media by way of filling in ec bags and disposal of same through head load incl. providing with new filter media by repeating the same process.(rate to quoted by contractor) (b) stone aggregate providing and laying hume / pvc pipe in filter bed.(rate to quoted by contractor) providing and laying tee junctions in filter bed.(rate to quoted by contractor) carriage of st
Sector: Water supply and Sewerage