Construction of 3 class room in Government High School at Chellappanpettai in Thanjavur District

Amount

Earthwork excavation for foundation in all soils and sub soils and to full depth as may be directed except in rock requiring blasting but inclusive of shoring strutting and balling out water wherever necessary and refilling the sides of foundation with excaved earth in layersof not more than 15cm thick well rammed consolidated depositing the surplus earth within the compound as shown by the departmental officers with in initial lead of 10 meters and initial lift of 2 meters and clearing leveling the site etc.complete complying with standard specification.

Supplying and filling in foundation and basement, etc with sand gravel mix 1:1 (One sand One gravel) including premixing and filling in layers of not more than 15cm thick well rammed watered and consolidated etc. complete complying with standard specification

Supplying and FILLING GRAVEL Supplying and filling in 'foundation and basement with filling sand in layers of not more than 15cm.thick well rammed watered and compacted -1m3 etc., complete complying with standard specification.

Supplying and filling in foundation and basement, etc, with filling Crushed stone sand in layers of not more than 15cm thick well rammed watered and consolidated etc. complete complying with standard specification.

Cement concrete 1:5:10 (one cement five Crushed stone sand and ten aggregate ) using 40mm size hard broken granite stone jelly for foundation including dewatering if necessary and laid in layers of not more than 15cm thick well rammed and fully compacted etc. complete

Brick work in cement mortar 1:6(One cement six Crushed stone sand) using the following mortars and using best quality of country bricks of size 8¾" X4¼"X2¼" for foundation and basement including curing etc. complete complying with standard specification.

Foundation & Basement

In Ground Floor

Supplying and erecting steel centering including necessary supports for plane surfaces for Reinforced Cement Concrete works such as column footings, column pedestals, plinth beams, grade beams, staircase steps, etc. which require only nominal strutting using mild steel sheets of size 90cm x 60cm and 10 BG stiffened with welded mild steel angles of size 25mm x 25mm x 3 mm for boarding, laid over silver oak joists of size 10cm x 6.5cm spaced at about 75cm centre to centre or at suitable intervals etc. complete in all floors complying with standard specifcation. (Payment for centering shall be given after the concrete is laid)

Supplying and erecting centering for sides and soffits including necessary supports and strutting upto 3.29 M height for plane surfaces as detailed below in all floors with all cross bracings using Mild Steel sheets of size 90 x 60 cm and 10 BG stiffened with welded Mild Steel angle of size 25mm x 25mm x 3 mm for boarding laid over silver oak joists of size 10cm x 6.50 cm spaced at abote 90 cm centre to centre and supported by casurina props of 10cm to 13 cm dia spaced at not more than 75 cm centre to centre etc. complete complying with the standard specificaiton. (Payment for centering shall be given after the concrete is laid)

For plan surfaces such as RCC floor slabs, roof slabs, rectangular, square, Tee (or) ELL beams, lintels bed Black, stair case waist and landing slabs, landing beam, portico slab, portico beam etc

For plan surfaces such as RCC rectangular, square, columns and sunshade etc

Providing and laying in position, standardised concrete Mix M-25 Grade in accordance with IS 456 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement content of 350 kg/m3 and maximum water cement ratio of 0.50, including admixture (plasticiser / super plasticiser) in recommended proportions as per IS:9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability with about (5 cu.m.) 7730 kg. of 20mm machine crushed stone jelly and with about (3.3 cu.m.) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m) 7670 kg. of sand, but excluding cost of reinforcement grill and fabricating charges, centering and shuttering and also including laying, vibrating with mechanical vibrators, finishing, curing, etc. and providing fixtures like fan clamps in the RCC floor/ roof slabs wherever necessary without claiming extra, etc., complete complying with standard specification and as directed by the departmental officers. The coarse and fine aggregates to be used should comply with the requirements of IS standards. (No separate payment will be made by the Department for the excess usage of materials).

Foundation and basement

In ground floor

Supplying fabricating and in position of mild steel or ribbed tor steel grills for all RCC works as per the design given including cost of steel and binding wire in all floors etc. complete complying with standard specifications (The contractor has to m

Cement concrete 1:5:10(One cement five Crushed stone sand and ten aggregate ) using 40mm size hand broken granite stone jelly for flooring including well rammed and rendering the top surface rough to receive the floor finish, curing etc. complete complying with stan

Brick partition walls of 10.80cm thickness using best quality country bricks of size 8-3/4" x 4-1/4" x 2-1/4" in Cement Mortar 1:3 (One Cement and Three crushed stone Sand) using hoop iron reinforcement if found necessary including curing etc. complete and as directed by the departmental officers. (Hoop iron reinforcement will be measured and paid for separately)

Ground floor

Plain Cement Concrete 1:2:4 (one cement, two Crushed stone sand and four hard broken stone jelly) using12mm jelly for wearing coat including laying, compacting, finishing and curing, etc., complete as per standard specificatins and as directed by the departmental officers.

Ground floor

Paving the Top of roof with Solar refelective ceramic tiles of size 305 x 305 x 7mm thick of approved quality and colour laid in Cement mortar 1:3 (One cement and three sand) 12mm thick and pointed with tile grout (Nitotile Grout or equivalent) and cement in the ratio of 1:3 for joint, curing etc., complete complying with standard specification and as directed by the departmental officers. (The make and brand of the tiles should be got approved by the Executive Engineer before use on works)

Paving the floor with best approved quality fine polished Kota stone slabs of size 600 x 600 of 18 / 20mm with machine cut edges and matching marble slab not less than 100mm width other than Adanga Marbles as border laid over a cement mortar bed of 20mm thick using cement mortar 1:3 (One cement and three sand) fixing the slabs in true right angles with minimum possible width of joints and pointing the joints with white cement mixed with mathcing colouring pigments and polishing with floor polisher to a high degree of finish etc., The kota stone slabs and other materials to be used shall be got approved by the Executive Engineer concerned before use on work, etc., complete as per standard speicification.

Fine polished Kota Stone Slab below 600 x 600 of 18 / 20mm size

Flooring with following non slippery ceramic Industrial tiles of size 305 x 305 x 6 mm laid over 20 mm thick cement mortar 1:3 (One Cement and Three Sand) base mortar over the existing slab / floor including cutting the tiles to the required size with special cutter wherever necessary, laying in position and pointing with white cement mixed with colouring pigment at the rate of 0.3 Kg. / sq.m. etc., complete complying with standard specification. (The make and brand of the tiles should be got approved by Executive Engineer before use on works)

Plastering the surface of walls with cement mortar 1:5(One cement five P- sand) 12mm thick in all floors etc, complete complying with standard specification

Special ceiling plastering and finishing the exposed surface of all RCC items of work such as slabs, beams, sunshades, facia, canopy slab, staircase waist slab, landing slab etc., with Cement Mortar 1:3 (One Cement and Three Plastering Sand) 10mm thick including hacking the surfaces, providing cement mortar nosing, beading for sunshades, staircases, steps, landing slabs and curing, etc., in all floors complying with standard specification and as directed by the departmental officers

Supplying and painting the walls with two coats of wall putty as instructed by the departmental officers including preparation of surface curing, etc., complete in all floors complying with standard specifications (The wall putty shall be got approved by the Executive Engineer before use of work).

Painting the wall two coats with approved weather proof Exterior Emulsion paint over one primer coat of over cement plastered wall surface ect., complete complying with standard specification.

Supplying and painting the walls with two coats of oil bound distemper over one coat of water based cement primer including cost for distemper, primer, cleaning and scrapping the walls, rendering the walls smooth with necessary putty, brushes, scaffolding arrangements, labour charges, etc., as per standard specification. (The colour and shade of the distemper shall be got approved by the Executive Engineer before use of work).

Supplying, fabricating and fixing in position of mild steel door in position using M.S. angle of size 40 x40 x 6mm for outer frame and 35 x35 x5mm for shutter frame fully covered with M.S. sheet of 18 gauge with M.S. flat of 32 x 6mm size for internal stiffeners horizontal 2 Nos diagonal 3 Nos. bottom tie 1 No. Two numbers of aldrops and two Nos. of tower bolts including providing one coat of red oxide primer. The rates shall inclusive of cost of all materials labour charges for fixing the door in position including dismantling the masonry, concrete and redoing the same duly packed with concrete etc., complete as directed by the departmental officers.

Double leaf door D

Fabricating, supplying and fixing of steel Emergency exitdoor cum, emergency window with the following specification. M.S. angle in size 40x40x6mm are used for the outer frames and M.S. angle of sie 35x35x5mm for the shutter frame, stiffners with 32x6mm M.S. flats provided at required intervals in the shutter frames 18 guage CR sheet is laid as panel and welded instant for 1/3 bottom portion of the shutter, M.S. flat 18x5mm is welded over the 32x6mm M.S flat sandwitching the CR sheet in between additional stiffner with 18x5mm M.S. flat is provided diagonally at the rear-side of the shutter. The balance 2/3 portion at top is provided with grill at an average weight of 15kg/m2 and the top portion of operation emergency window is to be made of 25x25x3mm M.S. angle welded intact with CR sheet and 25x3mm M.S. flat at diagonally at the near side of the window at required interwals 6 Nos. of hinges to be provided,6 Nos of holdfast 100mm in length made of angle section spliced at the ends are welded to the outer frame of the door. Tower bolts 2 Nos. one at top and the other at the bottom are to be provided one aldrop is provided at an appropriate place in the door 2 Nos. of 'D' type handle for emergency window and 2 Nos of handle for door is to be provided at appropriate places. A tie bar is provided at the bottom of the outer frame to prevent twisting of frame during transportation of fixing. All members are given one coat of red oxide primer as directed by the departmental officers. The rate includes cost of materials, labour transportation to side of works, loading, unloading and all other incidental charges etc., complete.

Fabricating, Supplying and fixng in position of steel sheeted windows ( Three Leaves) with the following specifications. Outer frames of windows made of 'Z' section F7D of size 33 x 25 x 3mm at 1.419 kg/ m and mullion 'J' section (F4B) of size 46x25x3mm at 2.28kg/m and shutter section of made of F7D of 33x25x3mm at 1.419 kg/m as specified in IS 7452/1990. Each openable shutter should not exceed a width of 600mm to enable separate operations and easy maintenance. The panel of the shutters to be covered with 18 gauge cold rolled sheet of superior quality and welded intact with shutter frames. Horizontal stiffeners using 18x5mm MS Flat at 0.70kg/m at 3 Nos. for each shutter and additional diagonal stiffners of the same MS flats at all the four corners of each shutters to the suitable length welded to the shutters, for holding the CR Sheets in position firmly.

Painting new iron works such as steel doors, windows, ventilators, window bars, balustrades etc, with two coats ofapproved quality and colour of synthetic enamel paint over the existing red oxide primer in all floors etc, complete complying with standard specifications.

Supplying and fixing fine polished cuddapah slab of following thickness for cup-board arrangements including laying to correct alignment with necessary cement mortar and black powder etc, complete complying with standard specification and as direct.

Cement Concrete 1:2:4 (One cement two Crushed stone sand and four aggregate) using 20mm HBG stone jelly (Machine Crused) for RCC jally works etc.,

Providing Blockboard in two layers with first layer in cement mortar 1:5 (one cement and five crushed stone sand)20mm thick and the second layer in Combination mortar 1:1:6(one cement one lime and six crushed stone sand) 20mm thick and providing band all round the block board in c.m 1:5 (one cement and five crushed stone sand) for 20mm thick and 50mm width including cost of one coat of block oxide paint of approved quality complying with standard specification.

Supplying and fixing in position of approved quality PVC rain waterdown fall pipes of 160mm diameters with working pressure of pipe 4kg/cm including cost of pipes with necessary shoes, bends, clamps, teakwood plugs, brass screws and fixing of grating at junction of parapet and the R.C.C roof slab including finishing neatly etc, (the size of teakwood plugs to be used shall be 150mm X 25mm in front and 200mm X 75mm in all others stde with a depth 100mm.) The PVC pipes shall be fixed with teakwood plugs by means of ' U ' clamps and at the center of the pipe line also in addition to these formore than three meters pipe length complying with standard specification.

For one floors

Supplying and fixing of M.S.grill of approved design for open courtyard, grill, grill work to doors and windows and ventilators using M.S flat of size 20x6mm for outer member 12x6mm for inner member which should be fixed to s which should be fixed on edges including priming coat of best approved quality red oxide primer etc., complete complying with standard specification.

Manufacturing, Supplying and Fixing of Stainless Steel Hand rails for staircase using 50mm dia 304L Grade Stainless Steel pipe of 1.60mm thick at required locations to a height of 900mm from finished floor level welded to 38mm dia Stainless Steel pipe post of 1.00mm thick as vertical at 900mm centre with 2 Nos. of 25mm dia intermediate horizontal stainless steel pipe of 1.60mm thick in between. The vertical pipe has to be welded to the 100 X 100 X 6mm MS base plate encased in the base concrete. The rate is inclusive of the charges for cutting, bending, welding, grinding, polishing, conveyance, electrical charges, etc. complete

ADD GST @18%

CHINNADURAI