supply, installation and commissioning of well recharge units , providing and fixing pvc pipes including fixing the pipe with clamps / clips at 1.00m spacing .this includes jointing of pipes with one step pvc solvent cement and testing of joints complete as per direction of engineer in charge 63mmdia 4kgf / cm2 - external work exposed on wall , providingand fixing pvc moulded fittings / accessories for rigid pvcpipes , including jointing with pvc solvent cement -63mm dia elbow , providingand fixing pvc moulded fittings / accessories for rigid pvcpipes , including jointing with pvc solvent cement -63mm dia bend , providingand fixing pvc moulded fittings / accessories for rigid pvcpipes , including jointing with pvc solvent cement -63x63x63 mm diatee , providingand fixing pvc moulded fittings / accessories for rigid pvcpipes , including jointing with pvc solvent cement -63x50mm dia reducer , providing and placing on terrace ( at all floor levels ) polethylene water storage tank :isi12701marked , with cover and suitable locking arrangement and making necessary holes for inlet , outlet and overflow pipes but without fittings and the base support for tank , providingand fixing pvc moulded fittings / accessories for rigid pvcpipes , including jointing with pvc solvent cement -63 mm dia socket coupling , od 1575576 / 2021-2022 providing and fixing 150mm half cut pvc pipe over flat iron brackets 20x5mm , od1644177 / 2021_2022suppling filling spreading and levelling charcol in recharge pit in the required thickness for all leads andlifts etc complete as per the direction of engineer in charge. , supplying, filling, spreading & leveling gravels of size range 5 mm to 10 mm, in the recharge pit, over the existing layer of boulders, in required thickness, for all leads & lifts, all complete as per direction of engineer -in-charge