North Bengal Development Department Tender

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

Surging / Development and Yield test

Cement cealing

Registivity Test

Mobilisation and site clearance

Chemical and Biological testing of water sample

1)Supply of ERW pipes a) Supply of 125mm dia.

Supply of Steel / other suitable Strainer a)80mm dia.

(a) Construction of cement concrete 1:2:4 base of size 450x 450x 450 mm using 20 mm down well graded rriver bazree flashed with the platform as per drawing including 10 mm thick plaster with neat cement finish and E/w in excavation for trenches , shuttering if required, curing etc complete as per direction of E-I-C.

(b) Construction of 1.8 m dia tubewell platform of cement concrete as per Direction of E-I-C (1:2:4) with 20 mm down river bazree of 75 mm thick over 75 mm thick cement concrete (1:4:8)with 30 mm down graded singles with construction of circular terain 150 x 150 mm size along the cement concrete 1:2:4 of 75 mm thick over 75 mm thick concrete platform of( 1:4:8) including 12 mm thick plaster ( 4:1) and net cement finish to the exposed including E/w in excavation in any kind of soil, including dressing ,shuttering, curing etc complete as per drawing & direction of E-I-C.

(c) Construction of drain of size 15 mm X 150 mm of cement concrete 1:2:4 using 200 mm down bazree of 75 mm with singles including 12 mm thick plaster 1:4 and neat cement finish including earth work in excavation , lebelling , dressing , shuttering , shoring etc complete as per direction of E-I-C

Supplying of India Mark - II Hand Pump Complete set with 32 mm dia riser pipe( 12 Nos) including Connecting rod, cylinder all complete.

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.

Spill water masonry surface drin as per type design 150 mm (inner) 125 mm brick work ( 1:4 ) including plastering 12 mm thick ( 1:4) neat cement punning complete over S.B.F.S. 100 mm (6:3:1) W.C.C.

Survey and training of local technicians and PRI members Topics will be technicalities on standards of platform construction , raised base around hand pump installation areas , soak pit, top cover slab, inspection pit , drainage construction, silt trap etc. for the operation and maintenance the cleaning of silt trap, soak pit re- filling etc. I.E.C. activities to spread awareness on man made water contamination and protective measures , water safety measures , waste -water management and it's pros and cons. Basic hygiene and sanitaation practice, periodical physical survey of construction handholding, half-yearly evaluation of the project, community initiation of more soak-pit for remaining hand pumps by using trained construction workers, filling of soak-pit appraisal form, monotoring of the construction , follow up of the soak pit for pilfarage/ seepage including conducting training to the user commit for operation and minor maintenance of thbe wells and civil structures.