MAD/ULB/BHATPARA/DR-2/1405

Labour for boring through any type of soil for sinking tube well of required dia. with top enlargement by rig boring system (either by reserve circulation or by direct rotary method) including hire charges and labour for rig machine, tools and plants, staging, force pumping set and making arrangement for water required for boring etc. complete and lowering of pipes, strainers, blind pipes etc. complete For depth upto 250meterfor 200 mm dia tubewell with top enlargement of 300 mm dia Upto 50 Meter i) First 50 Meter

Next 50 Meter

Next 50 Meter

Rest 100 Meter

Providing 200 mm centre guide. With clamp i)

Supply aSupplying, fitting and fixing 300 mm M.S. housing clamp of approved

Supplying, fibre glass reinforced Epoxy resin slotted of 1 mm slot width in 6.1m length of approved make and as per direction of the Engineer - in - Chargely 200 mm nominal dia (i) 6.0 mm wall thickness C) 200 mm nominal Dia

Supplying M.S. male / female adopter of approved make and brand for coupling of M.S. pipe and fibre glass strainers, as per direction of the Engineer - in - Charge. 200mm dia

Supply and delivery of UPVC Reducer 300mmx200mm dia

Packing the annular space between the outside of the tube well pipes & strainers and the bore with pea size washed gravel of approved quality having size from 2 mm to 5 mm or the size approved by the Engineer-incharge including cost of all materials labour and equipment complete. cu. m. 2029.00 Note: Initial 6 m. of Annular space between the housing pipe and the bore should not be shrouded with Pea size gravel to avoid contamination with surface water.

Packing annular space between the outside of the housing pipe and the bore with puddled clay balls of approved size as per direction of the Engineer-in-charge with cost of all materials and labour complete.

Labour for making arrangement for showing verticality test including the cost for hire charges of tools and plants, scafolding, labour etc. all complete.

Washing and developing tube well with air compressor pump and engine for 8 (eight) hours continuous pumping per day with necessary arrangements for testing the yield in gallons per hour with 'V' notch including hire and labour charges for all tools and plants and scaffolding as required. day 7538.00

Collecting sample of water for bacteriological and chemical test from any depth at any time during execution of work including hire and labour charges for tools and plants and sterilising the equipments, paying all charges and fees, testing etc. complete in all respect as per direction. L.S. 1231.00

Supply of PVC pipes & fittings Schedule 80 (medium duty) conforming to ASTMD - 1785 and threaded to match with GI Pipes as per IS : 1239 (Part - I). (A) PVC Pipe 200 mm dia

a)300 mm dia

B)Sockets 200 mm dia

b) 300mm dia.

Threaded End cap 200 mm dia

b) 300mm dia.

Nipple 300 mm long

Geo physical investigation of the aquifier by electrologging system with all tools and plants necessary including supply of necessary report

Add 18% GST

L.W.Cess 1%