Cleaning of Underground Water Reservoir, Overhead PVC Tank and Overhead R.C.C. Water Reservoir, Misc. Plumbing works and repairing works at CSIR-IICB, Jadavpur and Saltlake Campus, Kolkata.

Amount

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge.Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Cement concrete pavement with 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size), including finishing complete.

Brick work with F.P.S. bricks of class designation 75 in foundation and plinth in: Cement mortar 1:4 (1 cement : 4 coarse sand)

12 mm cement plaster finished with a floating coat of neat cement of mix :1:3 (1 cement: 3 fine sand)

Neat cement punning.

Providing and fixing 100 mm dia P.V.C. Pipe (Supreme) for connection of waste water line including excavation of soil as directed by Engineer in charge at CSIR-IICB, Jadavpur Campus, Kolkata-700032.

Cutting and removing of old switch valve and Providing & fixing of 6" ISI marked Switch valve, 1 pair Flunge, 3" nut bolt for inlet of corporation pipe line, chlorine, fitkari, bleaching powder (Bengal Chemical) and all cleaning accessories for removal germs deactivation or killing of pathogenic microorganisms in Underground Pit of size (5'x3'x3') at CSIR-IICB, Jadavpur Campus, Kolkata-700032.

Pumping out water from ponds or tanks (ayment if permitted will be made on the quantity of water calculated on the basis of initial water level and final level on consideration being made for any water that may have been made for any water that may have been added through percolation or otherwise)

Extra over the corresponding item of earth work for removing semi liquid mud or slushy earth by iron pans, buckets etc.(This item is to be done with approval of Engineer-in-charge)

Removing scum form the bottom floor of service U.G.W.R. washing the floor thoroughly and treating the same with liberal sprinkling of bleaching powder (including cost of bleaching power)

Providing fitkari, Chlorine and all cleaning accessories for removal germs deactivation or killing of pathogenic microorganisms in Underground Water Reservoir and including light fittings, pump machine, etc. complete with all accessories and ladder for temporary purpose as directed by Engineer in charge at CSIR-IICB, Jadavpur and saltlake Campus, Kolkata.

Providing and Fixing 3" Non Returnable Valve, 3"x9" Short Piece, 3"x1' Short piece, 3" Flunge, 3" Nut bolt, O.H Tank Cove(500 mm Dia) For repairing of water connection line at roof as directed by Engineer in charge at CSIR-IICB, Jadavpur Campus, Kolkata-700032.

Cutting of 4" old inlet corporation pipe line and Providing & fixing of 4" ISI marked Switch valve, 1 pair Flunge , 4"x6" short piece, 3" nut bolt for inlet of corporation pipe line at CSIR-IICB, Saltlake Campus, Kolkata-700091.