Repairing of office building of S.E Dhubri Circle. (Irrigation), Bongaigaon under M and R (D and A) Works for the year 2025-26

Amount

Civil work Item No.1:Dismantling roofing including ridges, hips, valleys and gutters etc.,and stacking the material within 50 metres lead of:

Item No.2: Dismantling cement asbestos or other hard board ceiling or partition walls including stacking of serviceable materials and disposal of unserviceable materials within 50 metres lead.

Item No.3: 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.

Item No.4: Removing white or colour wash by scrapping and sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete

Item No.5:.Hacking of CC flooring including cleaning for surface etc. complete as per direction of the Engineer-in-Charge.

Item No.6:.Dismantling doors, windows and clerestory windows (steel or wood) shutter including chowkhats, architrave, holdfasts etc. complete and stacking within 50 metres lead : Of area beyond 3 sq. metres

Item No.7:Providing and fixing glazed shutters for doors, windows and clerestory windows using 4 mm thick float glass panes, including ISI marked M.S. pressed butt hinges bright finished of required size with necessary screws.

Item No.8: Providing & fixing false ceiling at all height including providing &fixing of framework made of special section, power pressed fromM.S. sheets and galvanised with zinc coating of 120 gms/ sqm(both side inclusive) as per IS : 277 and consisting of angle cleat ofsize 25mm wide x 1.6mm thick with flanges of 27mm and 37mm, at1200mm c/c, one flange fixed to the ceiling with dash fastener12.5mm dia x 50mm long with 6mm dia bolts, other flange of cleat fixed to the angle hangers of 25 x10 x0.50mm of required lengthwith nuts & bolts of required size and other end of angle hanger fixed with intermediate G.I chanels 45 x15 x 0.90mm running at thespacing of 1200 mm c/c,to which the ceiling section 0.5mm thic.bottom wedge of 80mm with tapered flanges of 26 mm each havinglips of 10.5mm, at 450mm c/c, shall be fixed in a directionperpendicular to G.I intermediate channel with connecting clip madeout of 2.64mm dia x 230mm long G.I wire at every junction, includingfixing perimeter channels 0.50mm thick 27mm high having flangesof 20mm and 30mm long, the perimeter of ceiling fixed to wall/partitions with the help of Rawl plugs at 450mm centre, with 25mmlong dry wall screws @ 230mm interval, including fixing of CalciumSilicate Board to ceiling section and perimeter channels with thehelp of dry wall screws of size 3.5 x25mm at 230mm c/c, includingjointing & finishing to a flush finish of tapered and square edges ofthe board with recommended jointing compounds, jointingtapes,finishing with jointing compounds in three layers covering upto 150mm on both sides of joints and two coats of primer suitablefor boards, all as per manufacture's specification and also includingthe cost of making opening for light fittings, grills, diffusers, cut outsmade with frame of perimeter channels suitably fixed, all completeas per drawings, specificaton and direction of the Engineer in chargebut excluding the cost of painting with: 8 mm thick Calcium Silicate Board made with Calcareous& Siliceous materials reinforced with cellulose fibermanufactured through autoclaving process

Item No.9: Providing and laying vitrified floor tiles in different sizes (thickness to be specified by the manufacturer) with water absorption less than 0.08%and conforming to IS: 15622, of approved make, in all colours and shades, laid on 20mm thick cement mortar 1:4 (1 cement : 4 coarse sand),jointing with grey cement slurry @ 3.3 kg/ sqm including grouting the joints with white cement and matching pigments etc., complete.

Item No.10:15 mm cement plaster on the rough side of single or half brick wall of mix : 13.2.1 1:4 (1 cement: 4 fine sand)

Item No.11:Providing and applying white cement based putty of average thickness 1 mm, of approved brand and manufacturer, over the plastered wallsurface to the surface even and smooth complete.

Item No.12:Wall painting with plastic emulsion paint of approved brand and manufacture to give an even shade: One or more coats on old work

Item No.13:Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade One or more coats on old work

Item No.14:Providing and fixing factory made single extruded WPC (Wood Polymer Composite) solid plain flush door shutter of required size comprising of virgin polymer of K value 58-60 (Suspension Grade), calcium carbonate and natural fibers (wood powder/ rice husk/wheat husk) and non toxic additives (maximum toxicity index of 12 for 100 gms) having minimum density of 650 kg/cum and screw withdrawal strength of 1800 N (Face) & 900 N (Edge), minimum compressive strength 50 N/mm2, modulus of elasticity 850 N/mm2 and resistance to spread of flame of Class A category with property of being termite/ borer proof, water/moisture proof and fire retardant and fixing with stainless steel butt hinges of required size with necessary full body threaded star headed counter sunk S.S screws, all as per direction of Engineer-In- Charge. (Note: stainless steel butt hinges and necessary S.S screws shall be paid separately) 26.87.1 30 mm thick

Item No.15: Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-charge) 0.50 mm (+ 0.05 %) total coated thickness with zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during 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 55 mm) 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.

Item No.16: Providing and fixing precoated galvanised steel sheet roofing accessories 0.50 mm (+0.05 %) total coated thickness, Zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns using self drilling/ self tapping screws complete : 12.51.1 Ridges plain (500 - 600mm)

Electrical work. Item No.1: Wiring for light point/ fan point/ exhaust fan point/ call bell point with 1.5 sq.mm FRLS PVC insulated copper conductorsingle core cable in surface / recessed steel conduit, with pianotype switch, phenolic laminated sheet, suitable size MS box and earthing the point with 1.5 sq.mm FRLS PVC insulated copperconductor single core cable etc. as required Group B

Item No.2: Supplying and fixing two module stepped type electronic fan regulator on the existing modular plate switch box including connections but excluding modular plate etc. as required.

Item No.3: Wiring for light point/ fan point/ exhaust fan point/ call bell point with 1.5 sq.mm FRLS PVC insulated copper conductorsingle core cable in surface / recessed steel conduit, with pianotype switch, phenolic laminated sheet, suitable size MS box andearthing the point with 1.5 sq.mm FRLS PVC insulated copperconductor single core cable etc. as required

Item No.4:Supplying and fixing following modular switch/ socket on the existing modular plate & switch box including connections but excluding modular plate etc. as required. 15/16 A switch

Item No.5:Supplying and fixing following modular switch/ socket on the existing modular plate & switch box including connections but excluding modular plate etc. as required. 6 pin 15/16 A socket outlet

Item No.6:Celling Fan of Orient/Equivalent Make (i) 1400 mm

Item No.7:Supplying and fixing following size/ modules, GI box alongwith modular base & cover plate for modular switches in recess etc. as required. 8 Module (125mmX125mm

12 Module (200mmX150mm)

Item No.8:Single core copper conductor(flexible)industrial cable FR- LSH compound insulated(unsheathed)1100Volts confirming to IS : 694 Havells crylts make 1 sqmm

Munindra Singha (BID ID -290271)

SHRI DHANESH MEDHI (BID ID -290501)

Hitesh Chandra Ray (BID ID -290508)