Construction of chiller foundation including allied works for pumps, electrical panels etc. along with some others miscellaneous civil works at VECC, 1AF, Bidhannagar, Kolkata-700 064

Amount

GENERAL NOTE: 1) Debris generated from this work shall be disposed off by the contractor outside departmental premises by mechanical transport etc. without any extra cost to the department and/or as instructed by Engineer-In-Charge. During execution of work Contractor should maintain proper safety measures and provide proper insurance coverage to all work men to be engaged in this work. Contractor should quote rates accordingly. 2) Bidders must visit the site before submission of tender. 3) Above mentioned work will be executed at Bidhannagar campus of VECC. Bidders are requested to quote rates accordingly. 4) Rate of each item shall include the cost of manpower, materials, tools & tackles, scaffolding etc. at all level. 5) Contractor has to be very careful so that no nuisance is created or users are not disturbed during execution of the work. Labours engaged should be well behaved/good mannered. 6) Security regulation and rules of DAE shall be strictly followed during deployment of materials and work force. The work should be done satisfying all safety aspects and insurance coverage, ESI for all workers to be involved in this job is a mandatory requirement and contractor should quote rates accordingly. PPE’S such as safety shoe, helmet with chin strap, safety belts, safety goggles, safety shoes, welding shields, gloves, vici wear etc. are compulsory for all workers. 7) Copies of challan for the materials brought inside campus shall be submitted for reference & record of the department. 8) Time schedule as mentioned in NIT shall be strictly adhered to. The work should be carried out even on extended time period if required and for that special permission has to be obtained from competent authority.

Dismantling & demolishing brick work / plain cement concrete (P.C.C.)/ reinforced cement concrete (R.C.C.) including cutting of rods, stacking of serviceable materials by chiseling at all level and location including scaffolding, disposal of unserviceable materials outside premises etc. all complete as per specification and as directed.

In brick work with or without plaster.

In Plain Cement Concrete 1:3:6 / 1:2:4 including mosaic at window sill, mosaic tiles at flooring and/or skirting.

In Reinforced cement concrete 1:2:4 / 1:1 ½ :3 along with finishes (viz. mosaic floor/tiles etc.)

Providing labours, tools, tackles etc. for cutting chase (upto 125 x 150 mm.) and subsequent mending of damages including thorough surface preparation filling up of dents, cracks etc. all complete at any height and level, location including providing necessary scaffolding etc. all complete as directed by the Engineer-in-Charge.

In brick wall (Cement-3.6 Kg/Mtr)

Providing labour, tools, tackles for removing chain link fencing of 50x50mm mesh size 8 SWG (4mm approx.) including existing structural members and stacking within a distance of 150M etc. complete as per specification, drawing and as directed by the Engineer-In- Charge.

Surface dressing and levelling of ground in any kind of soil by mechanical and manual means including removing vegetation unserviceable materials, rubbish, others materials, inequalities not exceeding 15 cm depth and stacking of the rubbish within a lead up to 75 m or as directed by the Engineer in Charge. Surface dressing and levelling of ground in any kind of soil by mechanical and manual means including removing vegetation unserviceable materials, rubbish, others materials, inequalities not exceeding 15 cm depth and stacking of the rubbish within a lead up to 75 m or as directed by the Engineer in Charge.

Up to 1.50 m depth from average ground level

Providing 75mm thick flat brick soling in single layers with well burnt brick of approved manufacturer and of class designation 7.50 (classification as per IS 1077 -1992 and min. average compression strength not less than 7.50 N/ mm2) at all locations of sub base to floor and in plinth protection and below foundation laid flat to required level slopes etc. as shown including binding the interstices with approved quality sand including watering and pointing with cement mortar 1: 6 finish curing etc. complete as per specification, drawing and as directed by the Engineer-in-Charge.

Providing 150mm thick flat brick soling in double layers with well burnt brick of approved manufacturer and class designation 7.50 (classification as per IS 1077 – 1992 and min. average compression strength not less than 7.50 N/mm2) at all locations of sub base to floor and in plinth protection below foundation laid flat to required level slopes etc. as shown including binding the interstices with approved quality sand including watering, pointing with cement mortar 1:6 finish curing etc. complete as per specification, drawing and as directed by the EIC.

Providing and laying plain cement concrete at all level, location, using graded stone aggregate 20mm maximum size including mixing, conveying, placing, consolidation, finishing, dewatering if necessary, curing, necessary scaffolding, form work, etc. all complete as per drawing and as directed.

Plain Cement Concrete (1:2:4)

Providing and laying Cement Concrete in the grade as per following sub items at all level, location, conforming to IS 456-2000 using graded stone aggregate 20mm maximum size including machine mixing, conveying, placing, mechanical consolidation, finishing, dewatering if necessary curing, scaffolding etc. complete as per drawing and as directed by the Engineer-in-Charge. Notes for Reinforced Cement Concrete: a) Cement for structural work shall be OPC/PPC ISI marked and duly approved by the Engineer-in-Charge. b) PPC/blended cement of ISI marked shall only be used for finishing works on prior approval of Engineer-in-Charge. c) All concrete work shall be controlled concrete unless otherwise specified and shall be carried out strictly in accordance with the drawings and specifications. d) The rates for concrete works shall be exclusive of cost of reinforcement and formwork unless otherwise mentioned. e) All coarse aggregate to be of 20mm maximum size and uniformly graded unless otherwise mentioned. f) Test for concrete shall be done as per IS-456:2000 and the cost of the same shall be borne by the contractor.

Reinforced cement concrete M-30 grade

Extra for providing RMC (Ready Mix Concrete) confirming to ISI 4926 (Latest) in lieu of conventional concrete items supplied by approved RMC manufactures for all type of structural elements including transporting pumping etc. complete as per instruction of the Engineer -in Charge. Notes: a) Prior approval of Engineer-in-Charge for the supplier of RMC to be taken. b) No extra payment for shapes, sizes, curves, slopes etc. shall be entertained.

Brick work in cement mortar 1:4 at all level using well burnt bricks of class 7.5 & above as per IS 1077:1992; 125mm thick, correct line level, plumb scaffolding (if any), curing, racking out joint, pointing etc. complete as directed by the Engineer-in-Charge.

Brick work in cement mortar 1:4 at all level using well burnt bricks of class 7.5 & above as per IS 1077:1992; 250mm thick, correct line level, plumb scaffolding (if any), curing, racking out joint, pointing etc. complete as directed by the Engineer-in-Charge. Notes for Brickwork: a) The contractor shall get approved the samples of bricks from the Engineer-in-Charge before procurement on large scale and shall maintain the same for the entire work. b) Necessary Openings / nitches / cut-outs, wherever required as per drawings and asked for by the Engineer-in-Charge, shall be provided by the contractor without any extra cost. c) One brick wall thickness shall be considered as 250mm and half brick wall as 125 mm and lesser wall thickness if any shall be made up to the required dimensions by the contractor in CM 1:4 to proper line, level and plumb without any extra cost to the Department. d) The rate shall include cost of making the brick masonry to all geometrical shapes and sizes without any extra cost to the Department.

Providing, erecting, fixing in position, striking / removing and cleaning steel / timber shuttering & centering for form work / making pockets for foundation bolts at all foundation level & locations as mentioned for all geometrical shapes and designs as per drawings including rails bracings, props, brackets, cutting holes for pipes etc. providing & applying approved form oil on all surfaces of form work coming in contact with concrete including close hacking of all exposed concrete work after removal of form work, all materials, labour etc. complete as per specifications, drawings & as directed by the EIC. (Area of form work in contact with concrete shall only be measured for payment & stop boards for construction joints etc. will not be measured for payment)

Providing cement plastering on external/internal surfaces at all level and location with cement mortar (1:4) final rendering, finished smooth over masonary/concrete surface including hacking of concrete surface, curing, scaffolding etc. square cutting, dismantling of old damaged plaster, cleaning, disposal etc. as per sub items below, including providing bond coat made with cement admixed with water and latex (SBR) in the ratio 1:1:3 (1 latex, 1 water, 1 cement) Note: a) For 20mm thick plaster, bond coat is to be applied twice, one before applying 1st coat and 2nd one before applying final coat and for 15mm thick plaster only one bond coat before applying plaster is to be provided. b) Before commencement of plastering, the area shall be cleaned, wetted and shall be marked with 'Thiyyas' or Tapanis' and shall be got approved by the Engineer-in-Charge. c) Whenever the electrical contractor/ agency has to fix up switch boxes in walls, necessary Thiyyas or 'Dhadas' shall be arranged prior to plastering so that the electrical boxes are fixed properly in line with the finished plastered surfaces. d) Finishing around the junction boxes shall be done at all floor, level and position to the line, level and right angles as required while carrying out plastering work. e) No extra claim/cement consumption shall be entertained by the Department for the plastering done more than the specified thickness shown in the schedule of quantities, to bring the plastered surface to perfect line, level and plumb with adjoining columns and beams.

On external surface: 20mm thick in 2 coats over exterior surface at all height, level, location with base coat in cement mortar 1:4, 12mm thick and finishing coat in cement mortar 1:4, 8mm thick over masonry/concrete surface, including using water proofing agent conforming IS 2645-2007 @ 2% by weight of cement or as recommended by the manufacturer for the back coat and using Recron 3S of M/s. Reliance @125 gm pouch per 50Kg bag of cement for final coat or other approved equivalent make and/or as per manufacturer’s recommendation for finishing coat etc. all complete.

On internal surface, walls and ceilings: 15mm thick in one coat in cement mortar 1:4 at all height, level, location including Recron 3S of M/s. Reliance @125gm pouch per 50kg bag of cement or approved equivalent.

Painting on old painted / plastered exterior wall surfaces with two or more coats of exterior Acrylic Emulsion paint ‘Weather shield Max’ under brand Akzonobel or other approved equivalent protective finish of approved shade including sand papering, wire brushing, curing and cleaning the surface to remove all coatings, dust etc. filling up the cracks and crevices if any with approved putty including applying a coat of compatible stabilizing solution (primer) of approved make as directed, scaffolding etc. complete as per specifications, drawings, manufacturer’s recommendations and as directed by the Engineer-in-Charge.

Painting with two or more coats of Acrylic emulsion paint on internal surface at all level & location with approved shade and make including roller application over a coat of compatible cement based primer including preparing surface, primer filling with putty, wherever required, scaffolding, cleaning of surface, removal of stains etc. Complete as directed by the Engineer-in-Charge.

Painting two or more coats of Synthetic Enamel Paint of 1st quality and approved make, shade/colour on MS surface, MS/GI pipes etc. over a coat of metal red oxide zinc chromate primer, including through surface preparation by mechanical grinding, removing & cleaning of all rust, dust etc. filling up of dents, cracks with suitable putty etc. all complete at any height and level location including providing necessary scaffolding etc. all complete as directed by the EIC.

Supplying, fitting, fixing chain link fencing of 50 mm x 50 mm 8SWG size of approved quality to be fixed with M.S Post 65 X 65 x 6mm (2000mm high above G.L. spaced @ 2000mm C/C) by means of galvanized ‘C’ clips to grid of horizontal strands of galvanized high tensile spring steel wire of 6ϕ which have to be tensioned and fixed to the vertical posts by means of galvanized special clips, bolts and nuts etc. all complete etc. as directed by the Engineer-in-Charge.(Structural steel shall be paid in relevant item.)

Providing and laying of 40mm thick (M-30 grade) inter locking paving blocks of approved manufacturer and pattern & colour over 75 mm thick Plain Cement Concrete including placing in correct line, level and slope, interlocking firmly and compacting by mechanical vibrator, 50mm thick sand bedding, cleaning, removing excess sand including restraining the exposed edges of pavements by cement mortar (1:4) etc complete including cost of all materials, labour charges, tools & tackles as per specification and as directed by the Engineer-in-charge.(Plain Cement Concrete shall be paid in relevant item)

Taking out existing CC interlocking paver blocks from footpath/ central verge, including removal of rubbish etc., disposal of unserviceable material to the dumping ground, for which payment shall be made separately and stacking of serviceable material within 50 metre lead as per direction of Engineer-in-Charge.

Disposing off surplus excess debris/loose sand, any kind of soil, unserviceable materials, rubbish, scrap, concrete blocks, other miscellaneous materials, rotten grass/cutting seeds,/unserviceable PVC/FRP containers etc. inside VECC campus at all level and location of VECC, Bidhannagar campus by mechanical transport to suitable dumping area as approved by statutory authority outside the campus including all lift & lead stacking of serviceable materials (specially metal items, wood, PH items etc.) at a maximum distance of 150Mtr lead etc. as directed by EIC. Notes: a) Voids @ 20% for soils and other garbage & debris shall be deducted from fully loaded truck measurements to arrive at the net quantity for payment. b) Approval from concerned authorities is the responsibility of contractor & quoted rate shall be inclusive of all charges if any from the statutory authorities such as royalty etc.

Structural steel work at all floors and locations in guard bars, structural platform, grills, guard bars for windows, frames, covers, cover bracket for slanting chajja, using angles, tees, flats, bars, chequered plates, inserts fabricated out of mild steel bars, channels, angles, pipes, plates and diaphram plates for expansion joints etc. at all level, location, slope of required shapes, sizes including supplying, cutting, fabricating, hoisting, welding, erecting, making holes/chases by drilling (up to 25mm dia) including providing nut bolts (up to 20mm dia) wherever required and fixing/embedding in position in concrete/brick work with necessary hold fasts/screws & raw plugs and finishing the concrete/brick work after fixing/embedding, preparing surface mechanically for removal of rust, dirt, flakes etc. including painting two coats of 1st quality synthetic enamel paint of approved make and colour on all surfaces over a coat of approved red oxide zinc chromate primer, complete as per specifications, drawings and as directed by the Engineer-in-Charge. Note : i) Samples of all structural members including steel rectangular/square sections proposed to be used for fabrication will be weighed and actual weight shall be considered for payment. Wastage will not be measured for payment which shall be included in the rate. ii) The contractor shall submit 6 copies of shop drawing showing the dimensions details of fabrication etc. for the approval of Engineer-in-Charge. iii) Approval of Engineer-in-Charge for complete details and shop drawings shall be obtained before commencement of the work. iv) Quoted rate shall include cost of all shapes and sizes including circular, semi-circular etc. of the roof system.

Structural steel work with angle, channel, beam, MS plate, flat, square bars etc. conforming to IS-2062, IS-800 & IS-806 of M/S TATA/M/S SAIL/RINL or equivalent.

In RHS (Rectangular hollow section), SHS (Square Hollow section) CHS (Circular hollow section) of M/S TATA under brand "STRUCTURA'' or equivalent.

Reinforcement for RCC work including supplying steel bars of various diameters as required at site conforming to IS 1786-1985 (Latest) of work of all floors and locations including loading, unloading, transporting, de-coiling, straightening, cutting, bending, placing in position and binding with 18 gauge, soft drawn annealed steel binding wire, etc. including carrying out various tests as required etc. all as per specifications, drawings & as directed by the Engineer-in-Charge (Cost of binding wire shall be borne by the contractor & shall not be measured for payment)

Thermo Mechanically Treated (TMT) bars of grade Fe-550D manufactured by SAIL, TATA STEEL and RINL only.

Drilling holes for inserting/installing various dia Heavy Duty anchor fastener/shear connectors to transfer designed bolt force in existing RC members at floor levels including fixing with MS base plate of various sizes and thickness to place in position, including cleaning the drilled holes of loose dust by blowing air, filling the holes with cement slurry or any other approved chemicals including false holes if any (drilling of false holes shall not be measured for payment), cost of anchor fastener/shear connector, all labours, tools, tackles and charges for testing of fasteners/ connectors as per manufacturer's recommendation etc. complete all as per drawing and as directed by the Engineer-in-Charge (MS plate shall be paid under relevant item).

Anchor fasteners/shear connectors, 12mm dia, 150mm long approx. or as per manufacturer’s specifications having pull out load not less than 1500Kg.

Anchor fasteners/shear connectors, 10mm dia, 90mm long approx. or as per manufacturer’s specifications having pull out load not less than 1000Kg.

Anchor fasteners/shear connectors, 12mm dia, 150mm long approx. (drilled dia upto 17mm) of M/s. Hilti Make. N.B.: Material will be supplied by the department free of cost.

Providing, fixing and installing following capacity rotational moulded polyethylene (with 2.5% Carbon blank compound) water storage tank conforming to IS:10146-1982 or latest including providing & fixing with suitable locking arrangement, placing & supporting the whole bottom area of the tank on durable, rigid and level platform, making inlet, outlet, overflow & scour connection up to 50mm size by drilling hole in the tank, including, including jointing materials etc. at any location, height, level etc. including providing & fixing GI specials, hexagonal check nuts, washer, nipples, union and the cost of jointing materials all complete as per specification and as per sub item & as directed by EIC.

2000 liters capacity cylindrical vertical type PVC tank make M/s. SINTEX or equivalent approved make conforming to IS:12701-1996 or latest (Minimum wall and bottom thickness 5.4mm and min. weight of tank without liquid 81Kg.) Note: All the plumbing fitting & fixtures are heavy quality and conforming to IS:8931-1993 or latest.

Providing and fixing galvalume toughened permanently colour coated roofing sheet of any size, shape & pattern for roofing, facia, gutter etc at all heights and locations of M/s. TATA BLUESCOPE or equivalent 0.5mm thick with special polyester colour coating thickness 20 microns (DFT) on exposed surface and 5 microns (DFT) on unexposed surface over 5 microns (DFT) of polyester primer on both surfaces in CRCA sheet of 550 Mpa with hot dip coating of 150 gms/sqm aluminium zinc alloy conforming to ASTM 792 M-02/AS 1397 all as per manufacturer’s specifications of approved shade and colour fixing to tubular truss/SHS/RHS/any other sections at all levels including placing and fixing in position, bending to shape, cost of all materials, labour, tools and plants required for completion of the work , all overlaps metering wherever necessary, including providing J hooks / metallic self drilling self tapping fasteners of M/s. ‘BUILDEX’ embossed as “BX” conforming to AS 3566 class III having neoprene / EPDM washer, sealing joints with neutral cure type sealants in order to make the roof leak proof all as per manufacturers code of practice including providing flashing, ridge etc. complete as per drawing and as directed by the Engineer-in –Charge.

Providing and laying in position at all floor level & location 50mm thick DURA board of make M/s Supreme brand “HD-100” for expansion joint of RCC foundation/floor /slab etc to full width including etc, to correct line level including cost of all materials labour, scaffolding complete etc. all as per specification drawing & as directed by the E-I-C.

Supplying providing & fixing factory made pre-cast kerb stone (side kerb) of M-25 grade plain cement concrete (P.C.C.) of size 150mm thick 410 mm depth & 300mm long curved at inner edge of suitable radius using 20mm maximum size graded stone aggregate including necessary form work, compacting, finishing smooth, curing, fixing with cement mortar (C.M.) 1:3 etc. with or without groove including making drainage opening wherever required all complete as per specification, drawing & as directed by E-I-C.

Providing and fixing MS gate made out of MS angle 65 X 65 X 6 with both side 60 X 5 MS Flat bracing connected with 6 thk. 150 X 150 MS Plate, providing and fixing 03 numbers MS hinge per leaf, 150mm long, 25mm ϕ threaded into two parts (male & female) with necessary fittings (al-drop, tower bolt etc.) including fixing chain link fence (size 50 mm X 50 mm) 8SWG (approx. 4mm) as shown in drawing and finally fixing the gate in proper line, level and orientation etc. all complete, including labour, tools tackles etc. as directed by the Engineer-in-Charge as per following sub items.

Double leaf MS gate of approx. size 5000 X 2000(H)- 02 Nos.

Laying micro concrete over existing cement concrete pavement using Sikagrout 214 IN of M/s. Sika or Renderoc RG of M/s. Fosroc or approved equivalent in the ratio 2:1 (2 Sikagrout 214 IN or Renderoc RG : 1 Stone chips 6mm size) with heavy dash and uniformly to build concrete thickness in between 25 to 75 mm, applying a bond coat for old and new concrete bonding using latex of M/s. Sika or approved equivalent in cement slurry in the ratio 1:3:6 (1 Latex : 3 Water : 6 Cement) at any level, location, providing all manpower, tools, materials, shuttering & centering followed by proper curing etc. complete as per manufacturer’s recommendation and direction of EIC.

Providing labour, tools, tackles for dismantling temporary shed of approx. plan area 6.0m x 3.0m (height approx.. 3m) made up of half brick wall upto 1m height and MS wire mesh with structural steel members above 1m height and asbestos/GI sheet roofing, dismantling and demolishing of entire shed including disposal of unserviceable material outside the VECC campus and stacking the serviceable materials at suitable locations within 150m lead (preferably at central store) etc. complete as per specification and as directed by the Engineer-In- Charge.