Construction of Septic Tank and Boring Tube Well at Nurses quarter for Bamanhat Rural Pry Health Centre under Dinhata-II Development Block , Sahebganj. Dist-Cooch Behar. SL-15

Construction of septic tank of different capacities as per approved drawing with 1stclass brick work in cement mortar (1:4) including two 560 mm dia. R.C.C. manholecover(heavy type)of approved make supplied, fitted and fixed in the 100mm thickR.C.C (1:1.5:3) top slab with necessary fittings, 20mm thick cement plaster (4 : 1)with neat cement finish to the internal surfaces and 15 mm thick cement plaster (4 : 1)to outside wall upto 200 mm below G.L floor finished with 25 mm thick grey artificialstone over 100 mm thick R.C.C(1:1.5:3) bottom slab including supplying, fitting andfixing all necessry specials, fittings, S.W. tees, C.I. foot rest etc. including excavationearth in all sorts of soil, shoring, bailing out and pumping out water as necessary,ramming, dressing the bed and fefilling the sides of the tanks with earth, removingspoils, filling up the chamber with clear water, removing foreign materials from thechamber and including constructing attached inspection pit as per approved drawingand connecting all necessary pipes, joints etc. with internal plaster work and artificialstone flooring is to be donewithadmixture of water proofing compound @ 0.5% byweight of cement with all costs of labour and materials. Note:- (i) Finished level ofSeptic Tank should be 400 mm. from Ground Level. (ii) Height of 50 mm.Ventilation pipe &Mosquito proof mesh, should be follwed as per IS:2470,Part-I.Payment will be made separetly on the basis of actual height based on relevant I.S.Code. (i) For 20 users B) With Bazree (N.Bvariety.) (SAIL/TATA/RINL)

Construction of circular soak well 2.5 metre deep in all types of sandy soils with dry brick work upto 1.6 metre from the bottom having 150 mm intermediate cement brick work (1:4) band all round and cement brick work (1:4) upto 0.90 metre from top with 20mm thick cement plastering (1:4) to inside face upto the depth of cement brick work, 15mm thick cement plaster (1:4) on outer face from top of the well upto G.L. and 6 mm thick cement plaster (1:4) on top of the R.C.C. cover slab including fillingbottom 1.00 metre of inside of the well with brick metal (50 mm to 63 mm size) including R.C.C. cover slab of 100 mm thick with cement conc (1:1.5:3) with stone chips with necessary reinforcement and shuttering including one 560 mm dia. R.C.C. manhole cover (heavy type)of approved make supplied, fitted and fixed in the cover slab with necessary fittings, making nacessary arrangements for pipe connections, excavation of well including shoring, dewatering and removing the exess earth from the premises as per direction complete in all respect with all costs of labour andmaterials. With 250 mm thick dry brick work and 250 mm thick cement brick work (1:6) and 1.00m inside dia. (SAIL/TATA/RINL)

Supplying, fitting and fixing in position R.C.C. Manhole/ pit cover of approved make with rim of approved make (Heavy type) (i) 450 mm dia.

Labour for boring tube well of required dia. by water jet system through any type of soil strata including hire and labour charges for boring pipes, scaffolding, tools and plants as necessary and taking out them and lowering pipes, strainers, blind pipe etc. and fitting and fixing the same complete including bucket washing and other incidental works in the connection. The tube well should have a minimum 50 mm gap in between the outside of the tubewell pipe and the bore. (a) For depth upto 150 metre. . 6nos x54 .00

Supplying, fitting and fixing PVC pipes of approved make of Schedule 80 (medium duty) conforming to ASTMD - 1785 and threaded to match withGI 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 with holder batsclamps, including cutting pipes, making threads,fitting, fixing etc.complete in all respect including cost of all necessary fittings asrequired,jointing materials and two coats of painting with approved paintin any position above ground. (Payment will be made on the centre linemeasurements of total pipe line including all specials. No separatepayment will be made for accesories, specials. Payment for painting willbe made seperately)(a) For Exposed Work PVC Pipes (Dia)50 mm dia . Pipe- 6nos x 51.00 m

Supplying PVC strainer of approved make with adapter conforming to I.S.12818 specifications. (ii) 50 mm dia.. Striners - 6nos x 3.00 m

(L) Reducing Socket (mm X mm) ( G.I) 50X 40

Supplying, fitting and fixing plug of approved make conforming to I.S. specifications. (i) 40 mm

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. 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.

Add.- GST @ 18.0%

Add.- Labour Welfare Cess @ 1.00%