tender for ring compost 22-23 ring compost 1. ferro cement ring of diameter 0.7m placed ocver a circular ferro cement slab of dia 0.75m and thickness 2.5cm(without fixing). the ringto have a 30cm*30cm opening on the side at the bottom with a ferro cement slab cover of the same curved shape whichcan be removed and refitted back tightly with locking arrangement for removal of compost when ready.the ring will also have a hole of dia 2.5cm at bottom for the leachate to flow out2. circular ferro cement cover slab of 0.75m diameter and 2.5cm thick with central circular hole of 0.3m diameter to cover the ring.the hole will have a lid cover which can be removed and refitted back for loading the waste in to the ring and closing it tightly after loading the waste3. option to provide hdpe sheet 0.15mm in thickness in lieu of ferro cement slab at the base can also be given. in such case the cost can be reduced by rs.350