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| 1 | Labour for boring through any type of soil for sinking tubewell or required dia with top enlargement by rig boring system (either by reverse 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 lowring of pipes, strainers, blind pipes etc. completeFor depth upto 250 metres for 150mm dia tubewell with top enlargement 300mm dia(upto 50 metre) |
| 2 | (i) First 50 metres |
| 3 | (ii) Next 50 metres |
| 4 | (iii) Next 50 metres |
| 5 | (iv) Rest 100 metres |
| 6 | 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 2mm to 5mm or the size approved by the Engineer in Charge including cost of all materials labour and equipment complete. |
| 7 | Packing the annular space between the outside of the housing pipe and the bore with puddle clay balls of approved size as per direction of the Engineer in Charge including cost of all materials labour complete. |
| 8 | Supply, fitting and fixing PVC pipes for underground work of approved make of schedule 80 (medium duty) conforming to ASTMD-1785 and threaded to match with GI pipes as per IS:1239 (Part-I) with all necessary accessories, specials viz, socket, bend, tee, union, cross, elbow, nipple, long screw, reducing socket, reducing tee, short piece etc. fitted including cost of all materials jointing materials the same as directed complete in all respect |
| 9 | a) 300 mm inside diameter |
| 10 | b) 200 mm inside diameter |
| 11 | Washing and developing Tubewell with Air Compressor pump and engine for 8 hours continuous pumping per day with necessary arrangements for testing the yield in gallon per hour with ‘V’ notch including hire, labour and fuel charges of all tools and plants and scaffolding as required complete in all respect. |
| 12 | Labour for making arrangement for showing verticality test including the cost for hire charges of tools and plants, scaffolding, labour etc. all complete |
| 13 | Providing 200mm Centre guidei) With Clamp |
| 14 | Geophysical investigation of the aquifer by electro logging system with all tools and plants as necessary including supply of necessary report. |
| 15 | 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 sterilizing the equipments, paying all charges and fees, testing etc. complete in all respect as per direction. |
| 16 | Supplying, fitting and fixing 300 mm M.S. housing clamp of approved quality. |
| 17 | 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 - Charge (c) 200 mm nominal dia(ii) 7.00 mm wall thickness |
