North Bengal Development Department Tender

Chemical and Biological testing of water sample

Construction of circular soak well 2.50 mtr deep in all types of soil with dry brick work upto 1.60 mtr. From the bottom having 150mm intermediate cement brick work ( 1:4) band all round and cement brick work (1:4) upto 0.90 m from top with 20 mm thick cement plaster (1:4) to inside face upto the depth of cement brick work. 15 mm 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 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 necessary arrangemens for pipe connectios, excavation of well including shoring dewatering and removing the excess earth from the premises as per direction complete in all respect with all costs of labour and materials with 250 mm thick dry brick work and 250 mm thick cement brick work ( 1:6 ) and 1.00 m inside dia.

Supplying and fitting (Bottom plug, reducer, cap clamp guide etc.)