tender for construction of septic tank of different capacities as per approved drawing with 1st class brick work in cement mortar (1:4) including two 560 mm dia. reinforced cement concrete manhole cover(heavy type)of approved make supplied, fitted and fixed in the 100mm thick reinforced cement concrete (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 artificial stone over 100 mm thick r.c.c(1:1.5:3) bottom slab including supplying, fitting and fixing all necessry specials, fittings, s.w. tees, c.i. foot rest etc. including excavation earth 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, removing spoils, filling up the chamber with clear water, removing foreign materials from the chamber and including constructing attached inspection pit as per approved drawing and connecting all necessary pipes, joints etc. with internal plaster work and artificial stone flooring is to be done with admixture of water proofing compound @ 0.5% by weight of cement with all costs of labour and materials. note:- (i) finished level of septic 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. (ii) for 20 users a) with pakur variety. (other than sail/tata/rinl) , earth work in excavation of foundation trenches or drains, in all sorts of soil (including mixed soil but excluding laterite or sandstone) including removing, spreading or stacking the spoils within a lead of 75 m. as directed. the item includes necessary trimming the sides of trenches, levelling, dressing and ramming the bottom, bailing out water as required c