Repair and Revival of Sewerage Treatment Plant (STP) at Rajarhat Science Research Park Kolkata IIT Kgarahpur

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. External work 50 mm nominal dia Pipes

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. External work 25 mm nominal dia Pipes

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. External work 32 mm nominal dia Pipes

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. External work 40 mm nominal dia Pipes

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. External work 80 mm nominal dia Pipe

Excavating trenches of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, depth upto 1.5 m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m

Surface dressing of the ground including removing vegetation and in equalities not exceeding 15 cm deep and disposal of rubbish, lead up to 50 m and lift up to 1.5 m. All kinds of soil

Cutting road and making good the same including supply of extra quantities of materials i.e aggregate, moorum screening, red bajri and labour required. Bituminous portion

Cutting road and making good the same including supply of extra quantities of materials i.e aggregate, moorum screening, red bajri and labour required. Water bound macadam

Brick work with clay flyash F.P.S. (non modular) brick of class designation 7.5 in superstructure above plinth level up to floor five level in : Cement mortar 1:4 (1 cement : 4 coarse sand)

Cement Plaster (In Coarse Sand) i)15 mm cement plaster on rough side of single or half brick wall of mix 1:4 (1 cement: 4 coarse sand)

Neat cement punning.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level :"1:2:4 (1 cement : 2 coarse sand (zone-III) : 4 graded stone aggregate 20 mm nominal size)

Earth work in excavation by mechanical means (Hydraulic excavator) /manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m All kinds of soil.

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift upto 1.5 m.

Providing and fixing double scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40 mm dia M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps and M.S. staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it there after .The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and approval of Engineerin-charge .The elevational area of the scaffolding shall be measured for payment purpose .The payment will be made once irrespective of duration of scaffolding.Note: - This item to be used for maintenance work judicially, necessary deduction for scaffolding in the existing item to be done.

Providing and fixing rectangular high density polyethylene water storage loft tank with cover, conforming to ISI : 12701, colour of opaque white or as approved by Engineer-in-charge. The rate includes making necessary holes for inlet, outlet & over flow pipes. The base support i/c fittings & fixtures for tank shall be paid separately

Providing and fixing gun metal non- return valve of approved quality (screwed end) 50 mm nominal bore-Horizontal

Providing and fixing gun metal non- return valve of approved quality (screwed end) 50 mm nominal bore-Vertical

Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) : 50 mm nominal bore

Providing, fitting and fixing Poly Ball Valve 25 mm

Providing, fitting and fixing Poly Ball Valve 32 mm

Providing, fitting and fixing Poly Ball Valve 40 mm

Providing, fitting and fixing Poly Ball Valve 50 mm

Labour for dismantling PVC pipe with fittings. 25 mm

Labour for dismantling PVC pipe with fittings.32 mm

Labour for dismantling PVC pipe with fittings. 40 mm

Labour for dismantling PVC pipe with fittings. 50mm

Labour for dismantling PVC pipe with fittings. 80mm

Refixing PVC pipe with fittings after cleaning where necessary 25 mm

Refixing PVC pipe with fittings after cleaning where necessary 32 mm

Refixing PVC pipe with fittings after cleaning where necessary 40 mm

Refixing PVC pipe with fittings after cleaning where necessary 50mm

Refixing PVC pipe with fittings after cleaning where necessary 80mm

Thorough cleaning of all sewerage treatment tanks( Equalisation tank, Aeration,Clarifier, Sludge Holding,Filter feed)including removal of sludge ,debris,algae and bio film build up etc.as per direction of Engineer In Charge.

Complete media replacement of Multi Grade Filter (MGF) 1865 size FRP filters .Includes removalof old media ,cleaning of vessel and refilling with high quality MGF media etc.as per diection of the Engineer in Charge.

Complete media replacement of Activated Carbon Filter (ACF) 1865 size FRP filters .Includes removalof old media ,cleaning of vessel and refilling with high quality ACF media etc.as per diection of the Engineer in Charge.

Provision for supply of Fluidized Aerobic Filter media (FAF) media suitable for MBBR process ,in case current media found damaged or insufficient during inspection etc. as per direction of the Engineer in charge.

Supply and Installation of horizontal Multistage pump -1.5HP, 3 Phase capacity:10 cubic meter, Head-20 meterwith all fittings and electrical connection

Supply and Installation of vertical Multistage pump -3.0HP, 3 Phase, capacity:10 cubic meter, Head-50 meterwith all fittings and electrical connection

Supply of DOL starter for 1.5 HP horizontal multistage pump

Supply of DOL starter for 3.0 HP vertical multistage pump

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