Construction of 3 unit Additional Classrooms at Pratyekroy HS School under Kalacherra RD Block of North Tripura for the year 2025-26 2nd call.

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 disposal of excavated earth, lead upto 50m and lift upto 1.5m, disposed earth to be levelled and neatly dressed.-All kinds of soil

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan) including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. -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 up to 50 m and lift upto 1.5 m. -All kinds of soil

Supplying and filling in plinth, under floor, foundations etc. with sand (fine) from local quarry with all lifts including spreading in horizontal layers, watering, grading to required slope, ramming, consolidating and compacting each layer by using plate compactor or by any suitable method complete

Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering -All work upto plinth level: a) 1:3:6 ( 1 Cement: 3 fine sand : 6 graded stone aggregate 20 mm nominal size)

Making plinth protection 50mm thick of cement concrete 1:3:6 (1 cement : 3 fine sand : 6 graded well burnt brick aggregate 20 mm nominal size) over 75mm bed of dry brick ballast 40mm nominal size well rammed and consolidated and grouted with fine sand including finishing the top smooth.

Providing and laying in position specified grade of reinforced cement concrete excluding the cost of centring, shuttering, finishing and reinforcement -All work upto plinth level: - 1:1½:3 ( 1 Cement: 1½ fine sand : 3 graded stone aggregate 20 mm nominal size)

Reinforced cement concrete work in walls (any thickness), including attached pilasters, buttresses, plinth and skirting courses, fillets, columns, pillars, piers, abutments, posts and struts etc. upto floor five level excluding cost of centring, shuttering, finishing and reinforcement - 1:1½:3 ( 1 Cement: 1½ fine sand : 3 graded stone aggregate 20 mm nominal size)

Reinforced cement concrete work in beams, suspended floors, roofs having slope upto 15° landings, balconies, shelves, chajjas, lintels, bands, plain window sills, staircases and spiral stair cases upto floor five level excluding the cost of centring, shuttering, finishing and reinforcement - 1:1½:3 ( 1 Cement: 1½ fine sand : 3 graded stone aggregate 20 mm nominal size).

Centering shuttering including struttings, propping etc.and removal of form work for: - a) Foundations, footings, bases for columns etc. for mass concrete with timber plank.

Centering shuttering including struttings, propping etc.and removal of form work for:b) Columns, Pillars, Piers, Abutments, Posts and Struts with shuttering ply

Centering shuttering including struttings, propping etc.and removal of form work for c) Lintels, beams, plinth beams, girders, bressumers and cantilevers with shuttering ply

Centering shuttering including struttings, propping etc.and removal of form work for - d) Suspended floors, roofs, landings, balconies and access platform with 12 mm thick shuttering ply

Centering shuttering including struttings, propping etc.and removal of form work for - e) Edges of slabs and breaks in floors and walls under 20 cm. wide

Centering shuttering including struttings, propping etc.and removal of form work for f) Weather shade, chajjas, corbels etc. including edges

Reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. - Thermo-Mechanically Treated bars of grade Fe-500D or more

Reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete above plinth level. - Thermo-Mechanically Treated bars of grade Fe-500D or more

Providing precast cement concrete Jali 1:2:4 (1 cement: 2 coarse sand : 4 graded stone aggregate 6mm nominal size) reinforced with 1.6 mm dia mild steel wire including centring and shuttering, roughening cleaning, fixing and finishing in cement mortar 1:3(1cement : 3 fine sand) etc. complete, excluding the plastering of jambs, sills and soffits a) 40 mm thick

First class brick work in foundation and plinth including cost of all materials as required complete:- In cement mortar 1:4 ( 1 cement : 4 fine sand ).

9.3 Providing and fixing in position collapsible steel shutters with vertical channels 20x10x2mm at 100 mm centre to centre and braced with flat iron diagonals 20x5mm size with top and bottom rail of T-iron 40x40x6mm with 40mm dia. steel pulleys & with riveted bolts, nuts, locking arrangement, stoppers, handles, hold fast /anchor bolt including embedding in cement concrete of required grade for fixing in position, all necessary fittings, including applying a priming coat of approved steel primer etc. complete as required.

First class brick work in superstructure above plinth level & upto floor-five level including cost of all materials as required complete:- In cement mortar 1:3 ( 1 cement : 3 fine sand ).

Half brick masonry work with first class bricks in superstructure upto floor five level including cost of all materials as required complete:- 3 In cement mortar 1:4 ( 1 cement : 4 fine sand )

First class brick work in foundation and plinth including cost of all materials as required complete:- In cement mortar 1:5 ( 1 cement : 5 fine sand ).

Providing and fixing T-iron frames for doors, windows and ventilators of mild steel Tee-sections, joints mitred and welded, including fixing of necessary butt hinges and screws and applying a priming coat of approved steel primer. 9.10.1 Fixing with 15x3 mm lugs 10 cm long embedded in cement concrete block 15x10x10 cm of C.C. 1:3:6 (1 Cement : 3 coarse sand : 6 graded stone aggregate 20 mm nominal size)

Providing and fixing ISI marked flush door shutters conforming to IS: 2202 (Part I) ecorative type, core of block board construction with frame of 1st class hard wood and well matched teak 3 ply veneering with vertical grains or cross bands and face veneers on both faces of shutters. -35 mm thick including ISI marked Stainless Steel butt hinges with necessary screws.

Providing and fixing panelling or panelling and glazing in panelled or panelled and glazed shutters for doors, windows and clerestory windows (Area of opening for panel inserts excluding portion inside grooves or rebates to be measured). Panelling for paneled or paneled and glazed shutters 25 to 40 mm thick.Ply wood 5 ply, 9 mm thick : 8.6.3.1 Decorative plywood both side decorative veneer (Type - 1) conforming to IS 1328 BWR type.

Providing and fixing aluminium work for doors, windows, ventilators and partitions with extruded built up standard tubular sections/ appropriate Z sections and other sections of approved make conforming to IS: 733 and IS : 1285, fixing with dash fasteners of required dia and size, including necessary filling up of gaps at junctions, i.e. at top, bottom and sides with required EPDM rubber/neoprene gasket etc. Aluminium sections shall be smooth, rust free, straight, mitred and jointed mechanically wherever required including cleat angle, aluminium snap beading for glazing / paneling, C.P. brass / stainless steel screws, all complete as per architectural drawing and the direction of Engineer-in-charge. (Glazing and paneling and dash fasteners to be paid for separately) :- A) For shutters of doors, windows & ventilators including providing and fixing hinges / pivots and making provision for fixing fittings wherever required including the cost of EPDM rubber / neoprene gasket required ( Fittings shall be paid for separately ):- i) Anodised aluminium (anodised transparent or dyed to required shade according to IS: 1868, Minimum anodic coating of grade AC 15).

Providing and fixing glazing of approved quality in aluminium doors, windows, ventilator, shutters and partition etc. with EPDM rubber / neoprene gasket etc. complete as per architectural drawing and the direction of Engineer-in-charge (Cost of snap beading shall be paid in basic item) :-A) With float glass panes of 4.0 mm thickness ( weight not less than 10.0 kg / sqm )

Providing and fixing M.S. grills of required pattern in frames of windows etc. with M.S. flats, square or round bars etc. all complete. - M.S. grills of required pattern

10.42 Providing and laying 1st class quality 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 - 2017, of approved make, in all colours and shades, laid over 20mm thick cement mortar 1:4 (1 cement : 4 fine sand), jointing with grey cement slurry @ 3.3 kg/ sqm including grouting the joints with white cement and matching pigments etc. all complete as per direction of the Engineer-in-charge. Double charged Stainfree vitrified tiles (Glossy) - Size of tile 600 mm x 600 mm

Grading roof for water proofing treatment complete as required as per direction of the Engineer-in-charge with :- 1 Cement concrete 1:2:4 (1 cement : 2 fine sand : 4 graded stone aggregate 20 mm nominal size)

Extra for providing and mixing water proofing material in cement concrete work in doses by weight of cement as per manufacturer's specification. - per 50 kg Cement bag

10.54 Providing and fixing precast chequered cement concrete tiles 18 mm thick, laid in footpath & courtyard, on 20 mm thick bed of cement mortar 1 : 4 ( 1 cement : 4 fine sand ) jointed with neat cement slurry mixed with pigment to match the shade of tiles including rubbing and cleaning complete as per direction of Engineer -in - charge. - In dark shade using ordinary cement

6 mm cement plaster of mix.In cement mortar 1:3 ( 1 cement : 3 fine sand ).

12 mm cement plaster of mix - In cement mortar 1:3 ( 1 cement : 3 fine sand ).

15 mm cement plaster on the rough side of single or half brick wall of mix: In cement mortar 1 : 4 ( 1 cement : 4 fine sand )

Neat Cement Punning.

Distempering with 1st quality acrylic distemper (ready mixed) having VOC content less than 50 grams/ litre, of approved brand and manufacture to give an even shade [Payment shall be made after submission of Test Certificate issued by the Manufacturer] :New work ( two or more coats) over and including water thinnable priming coat with cement primer.

Finishing walls with premium acrylic smooth exterior paint with Silicon additives of required shade of approved brand and manufacture [Payment shall be made after submission of Test Certificate issued by the Manufacturer] :New work ( two or more coats applied @ 1.43 litre/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm)

Finishing with Epoxy paint ( two or more coats) of approved brand and manufacture at all locations prepared and applied as per manufacturer's specification including appropriate priming coat, preparation of surface etc. complete [Payment shall be made after submission of Test Certificate issued by the Manufacturer]. - On steel work

Providing and fixing on wall face unplasticised Rigid PVC rain water pipes (working pressure 4 kg/cm2) conforming to IS : 13592 Type A including jointing with seal ring onforming to IS : 5382 leaving 10 mm gap for thermal expansion:Single socketed pipe - 75 mm OD

Providing and fixing hand rail using structural steel etc. of approved size by welding etc. to steel ladder railing, balcony railing and staircase railing etc. including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer complete as required:-G.I.pipes.

Lettering with black Japan paint of approved brand and manufacture [Payment shall be made after submission of Test Certificate issued by the Manufacturer].