Extension of the existing structural shed and renovation of MSW Management Pilot Plant at CSIR-CMERI, Durgapur-713209

Amount

Demolishing RCC work manually/ by mechanical means including stacking of steel bars and disposal of serviceable material within 50m lead as per direction of Engineer-in-charge.

Demolishing brickwork manually/ by mechanical means including stacking of serviceable materials and disposal of unserviceable materials within 50m lead in cement mortar.

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).

Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30cm in depth, 1.5m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50m and for all lift, as directed by Engineer-in-charge for 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 upto 50m and for all lift.

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) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources).

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level: 1:1.5:3 (1 cement : 1.5 coarse sand (zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size de rived from natural sources).

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level of Cold twisted bars.

Centering and shuttering including strutting, propping etc. and removal of form work for : foundation, footing, bases of columns, etc. for mass concrete.

Repair to plaster of thickness 12mm to 20 mm in patches of area 2.5 sqm and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing mortar, including disposal of rubbish, all complete as per the direction of Engineer-In-Charge.

Removing dry or oil bound distemper, water proofing cement paint and the like by scrapping, sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete.

Finishing walls with Acrylic Smooth exterior paint of required shade on new work (Two or more coat applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 0.90 litre/ 10 sqm).

Applying priming coat with ready mixed red oxide zinc chromate primer of approved brand and manufacturer on steel galvanised iron/ steel works.

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade. Two or more coats on new work over an under coat of suitable shade with ordinary paint of approved brand and manufacture.

Cement concrete flooring 1:2:4 (1 cement: 2 coarse sand: 4 graded stone aggregate) 40mm thick with 20mm nominal size stone aggregate finished with a floating coat of neat cement including cement slurry, but excluding the cost of nosing of steps etc. complete.

Providing and fixing precoated galvanised iron profile sheets (size,shape and pitch of corrugation as approved by Engineer-in-charge) of total coated thickness 0.50 mm (bse metal of minimum 0.45mm thickness with total coated thickness 0.50mm) with zinc coating 120 grams per sqm as per IS:277, in 240mpa steel grade, 5-7 micron epoxy primer on both side of steel and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches while transportation and should be supplied in single length upto 12 metre or as desired by Engineer-in-charge. The sheet shall be fixed using self drilling /self tapping screws of size (5.5x 55mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.

Providing and laying 3mm thik APP (Atactic Polypropylene Polymer) modified prefabricated five layer, 3mm thick water proofing membrane, black finished reinforced with glass fibre matt consisting of a coat of bitumen primer for bitumen membrane @ 0.40 ltr/sqm. by the same membrane manufactured of density at 25°C, 0.87 - 0.89 kg/ltr and viscocity 70 - 160 cps. Over the primer coat the layer of membrane shall be laid using butane torch and sealing all joints etc., and preparing the surface complete. The vital physical and chemical parameters of the membrane shall be as under : Joint strength in longitudinal and transverse direction at 23°C as 350/300 N/5cm. Tear strength in longitudinal and transverse direction as 60/80N. Softening point of membrane not less than 150°C. Cold flexibility shall be upto -2°C when tested in accordance with ASTM, D - 5147. The laying of membrane shall be got done through the authorised applicator of the manufacturer of membrane.

Providing and fixing on wall face unplasticised Rigid PVC rain water pipes 110 mm diameter conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i) Single socketed pipes .

Providing and fixing 110 mm Bend 87.5 deg on wall face unplasticised - PVC moulded fitting/accessories for unplasticised - Rigid PVC rain water pipes conforming to IS : 13592 Type A including jointing with seal ring conforming to IS:5382 leaving 10 mm gap for thermal expansion.

Providing and fixing 110 mm Shoe (Plain) on wall face unplasticised - PVC moulded fitting/accessories for unplasticised - Rigid PVC rain water pipes conforming to IS : 13592 Type A including jointing with seal ring conforming to IS:5382 leaving 10 mm gap for thermal expansion.

Providing and fixing Gutter (600 mm overall girth) precoated galvanised steel sheet roofing accessories 0.50 mm(base metal of minimum 0.45mm thickness with total coating thickness of 0.05mm) with zinc coating 120gram per sqm as per IS:277, in 240 MPa steel grade, 5-7 micron epoxy primer on both side of the sheet and polyester top coat 15-18 microns using self drilling screws complete.

Steel work in built up hot finished welded type tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete.

Providing and fixing Mild Steel grill based folding door of size 2.75mx2.4m, which fully covered with 2mm thick Mild Steel sheet. The grill will be erected by the flat of size 25x5mm @200mm center to center, and outer periphery of each part of grill will be done by MS flat 40x5 mm. The door will be vertically divided into four equal parts and joined each other with three brass butt hinges (heavy type) 125x85x5.5mm (0.70kg)in each joint. Four parts required twelve brass hinges. Each grill door must be connected to three full rotating hinges and hinges will be fixed in walls by using 24 nos., 12mm dia anchor fastener to the wall for proper fixing. Also, erect three long circular vertical tower bolt (diameter 20mm, 750mm long ) and two sliding bolt (diameter 20mm, 300mm long) for locking arrangement of door. Total weight of door should not be less than 192 Kg.

Koushik Choudhury

SURAJ CONSTRUCTION

ASSOCIATED ENTERPRISES

P K ROY