Sinking of 250 x 200 mm dia X 250 metre deep Tubewell along with Pumping Machinery, elecetrical accessories including interconnection with existing pipe line at Uluberia Industrial Park, under WBIIDC in the district of Howrah

Electrical resistivity survey to ascertain the availability of portable water with expioration of three spots for obtaining the optimum result.

Labour for boring through any type of soil for sinking well of required dia. With top enlargement by rig boring system (either by reverse circulation or direct rotary method) including hire charges and labour for rig machine, tools and plant, staging, force pumping set and making arrangement for water required for boring etc. complete and lowering of pipes strainers blind pipes etc. complete. a)      For depth upto 250metre for 150 mm dia Tube well with top enlargement of 250mm dia (upto 50metre). i)            First 50metre

ii) Next 50 metre

iii) Next 50 metre

iv) Rest 100 metre

Supplying fibre glass reinforced Epoxy resin slotted strainer of 1mm. Slot width in 6.1m length of approved make and as per direction of the Engineer in charge a) 200mm nominal dia. i) 6.0mm wall thickness

Supplying, 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, elbo, nipple, longscrew, reducing socket, reducing tee, short piece etc. fitted including cost of all materials ,jointing materials, cutting pipes, making threads ,cutting trenches upto 1.5 metre below surface in all sorts of soil and refilling the same as directed complete in all respect. (Payment will be made on the centre line measurement of the total pipe line including all specials No separate payment will be made for accessories, specials.) PVC Pipes a) 200mm dia (internal)

b) 250 mm dia(internal)

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

Supplying fitting and fixing heavy type bell mouth reducing socket a) 250mm x200mm