SPECIAL REPAIR OF GI WATER DISTRIBUTION LINE OF GOVT MARRIED ACCN IN RCTC AREA, SPECIAL REPAIRS TO ROOF OF STORE AT AGE (E/M) STORE YARD (BLDG NO. T/5/S AND T/4), PROVN OF SHED OVER GUARD ROOM FOR SECURITY DUTIES AT BARRACKPORE UNDER GE BARRACKPORE

Amount

PART-I Dismantling plain or corrugated steel sheeting, any gauge, thickness including Nainital or similar pattern roof covering complete etc all as specified and directed.

Dismantling wrought iron or mild steel work of any description etc complete all as specified and directed.

Surface dressing in soft /loose soil not exceeding 15 cm deep complete all as specified and directed.

M&L for broken stone or boulders hardcore of gauge not exceeding 63mm, deposited spread and levelled in layers not exceeding 15cm thick, watered and rammed to a true surface complete all as specified and directed.

M&L for PCC (1:4:8) type D-2 (using 40 mm graded crushed stone aggregate) as in foundation filling and mass concrete complete all as specified and directed.

M&L for brick work with sub class 'B' bricks locally available best quality straight or curved on plan exceeding 6m mean radius, built in cement mortar (1:4) complete all as specified and directed.

S&F of rolled mild steel angle iron roof trusses (framed) and purlins, rafters crane gantries, rails, heavy brackets etc including distance pieces, cleats, angle, tee etc including necessary cutting , welding etc complete Fe-410W (Gde E-250) quality 'A' complete all as specified and directed.

S&F for mild steel work in tubular trusses and purlins including special shaped washer etc complete using ERW or induction butt welded tubes conforming to IS 1161-1979 grade St-240 including one shop coat of zinc chromate primer paint (including preparation of surface at contractors workshop before fabrication complete all as specified and directed.

S&F for mild steel screw bolts (machine made) 11 to 15mm with hexagonal head at one end and screwed the other end, each screw end to be fitted with two washers and one hexagonal or square nut, length of bolts 50mm to 100mm complete all as specified and directed.

S&F for 0.63 mm thick galvanised, corrugated mild steel sheeting with two corrugation side lap, fixed with L-type or J-type or crancked hook bolts, in roofs, wall etc with grade of zinc coating 275 gm per sqm complete all as specified and directed.

Except sheeting any thick galvanised, corrugated mild steel sheeting with two corrugation side lap, fixed with L-type or J-type or crancked hook bolts, in roofs, wall etc with grade of zinc coating 276 gm per sqm complete all as specified and directed. (Note:- Seviceable sheet shall be obtained from Item No. 1.00 here-in-before)

S&F of 0.63 mm thick plain, galvanised, mild steel sheeting, in ridges, hips, valley gutters, drip & straight flashing (legth & girth as fixed) with grade of zinc coating 275 gm per sqm complete all as specified and directed.

S&F of pre-painted galvalume aluminium zinc coating GI based corrugated steel sheet of 0.50mm thick of any colour as approved by GE having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws complete all as specified and directed.

S&F of pre-painted galvalume aluminium zinc coating GI based plain steel sheet of 0.50mm thick of any colour as approved by GE having tensile strength of 550 Mpa as in ridge / wall/cladding, fixed with self tapping screws complete all as specified and directed.

M&L for 75mm thick PCC (1:4:8) type D2 (using 40mm graded crushed stone aggregate), as in sub base of floor complete all as specified and directed.

M&L for40 mm thick cement concrete (1:2:4) type B-2 (using 20mm graded crushed stone aggregate) finished even and smooth without using extra cement complete all as specified and directed..

M&L for pre-polished coloured chequered cement concrete tiles 25cm x 25cm x 25mm thick (glossy type), set, jointed and pointed in neat cement slurry in floors with grey cement and pigments over and including 15 mm thick cement screed bed in cement mortar (1:6) after and including dismantling existing floor earth and rubbish off the premises complete all as specified and directed.

M&L for rendering 15mm thick in cement mortar (1:6) on brick work or concrete surfaces of wall, finished even and smooth without using extra cement complete all as specified and directed.

M&L for applying two coats of cement based paint over a coat of alkali resistance primer on newly plastered surface of walls including preparation of surface complete all as specified and directed.

M&L for applying two coats of synthetic enamel paint (1st grade quality) over a coat of red oxide primer after preparation of new steel surfaces of any description over 10cm width or girth complete all as specified and directed.

M&L for applying one coat of synthetic enamel paint (1st grade quality) after preparation of old steel surfaces of any description over 10cm width or girth complete all as specified and directed.

PART-II Excavation in trenches for laying under ground cable, foundation and erection of poles and stays in soft/loose soil not exceeding 1.5 meter wide and not exceeding 1.5 meter deep and getting out complete all as specified and directed.

Excavation in trenches for laying under ground cable, foundation and erection of poles and stays in hard/dense soil not exceeding 1.5 meter wide and not exceeding 1.5 meter deep and getting out complete all as specified and directed.

Removing surplus excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting points in soft/loose soil complete all as specified and directed.

Returning, filling in, including spreading leveling, watering and well ramming in layers not exceeding 25cm, soil complete all as specified and directed.

Taking down and supply and laying in trenches of GI tubing (Medium grade) 80 mm bore, with all fittings (such as elbow, tee, socket etc) complete all as specified and as directed. (Note: Excavation of earth work shall be measured and paid seperately)

Ditto all as per Item No.26.00 but bore of tube 50mm

Ditto all as per Item No.26.00 but bore of tube 40mm

Ditto all as per Item No.26.00 but bore of tube 25mm

Ditto all as per Item No.26.00 but bore of tube 20mm

Ditto all as per Item No.26.00 but bore of tube 15mm

S&F of Gun metal gate valves with iron wheel head, screwed both ends for iron pipes including taking down old unserviceable valves complete all as specified and as directed of following sizes:-

Gate valve of bore dia of pipe 50mm

Gate valve of bore dia of pipe 40mm

Gate valve of bore dia of pipe 25mm

Gate valve of bore dia of pipe 20mm

Gate valve of bore dia of pipe 15mm

M&L for cement concrete type C2(1:3:6) (using 40mm graded aggregated) as in filling/levelling of road/hard standing foundation and mass concrete including necessary formwork complete all as specified and directed.

Taking down ball valves high pressure of PTMT with epoxy coated aluminium rod & high density plastic ball of any size and refix after proper cleaning in the new incoming pipe to the tank complete all as specified and directed.

Repairing of valve pit chamber after taking down cracked plaster and perforated MS cover and angle and complete with new plaster inside of valve pit chamber of any description max upto size of 0.9m X 0.9m and change of MS cover and angle. The steel surfaces shall be painted with to coats black bituminous paint over a coat of anti corrosive red oxide primer or all as specified and direction.

Construction of valve pit chamber with brick masonary with sub class 'B' bricks (one brick thick) in cement mortar (1:6) and necessary PCC (75mm thick) type D2 ( 1:4:8) as in foundation and 15mm thick plastering on brick work in cement mortar (1:4) including necessary earthwork etc work having internal dimension 60cm X 60cm X 60cm and providing of 3mm thick MS sheet cover duly hinged on 40mm X 40mm X 6mm angle iron frame and embedded on top of chamber by minimum 4 Nos MS hold fast. Necessary locking arrangement shall be provided to the sheet cover for safety. The steel surfaces shall be painted with two coats black bituminious paint over a coat of anti-corrosive red oxide primer complete after demolition of old valve pit chamber complete all as specified and directed.

Boaring holes 0.6m deep in road for passing pipe line gettingout and disposalof spoil to ta distance of not exceeding 50 m horizontally under road without damaging the surface of road (minimum 0.6 Mtr bellow the road suface) with the help of GI tubing of any dia not exceeding 200 mm dia for passind of GI pipe all as specified and directed. (Note: GI pipe laid shall be measured seperately)

CHATTERJEE CONSTRUCTION AND SUPPLIERS

S..S. ELECTRIC CO.

SENCO

M/S H.P Singha