Dr.Radhakrishnan School - Tiruttani

Amount

Dismantling and clearing away carefully and stacking materials useful for reuse the cracked/ dislodged brick wall of the building and to dispose debris etc complete complying with standard specification and as directed by the departmental officers.

Removing and clearing away carefully and stacking materials useful for reuse of the decayed wooden beam/joist/girder in Madras terrace roofing in all floors by carefully dislodging at ends and top including making necessary notches or openings in the wall on either side of joist, beam to enable it removed etc., complete complying with standard specification and as directed by the departmental officers.

Removal of damaged wooden doors and windows and clearing away carefully and stacking materials useful for reuse without causing any damage to the existing ancient brick masonry wall including carefully removing brick corners of doors and windows etc complete complying with standard specification and as directed by the departmental officers.

Dismantling of pressed tiles and disposing the debris excluding erection of scaffolding and proper centering for the safety of labours etc., complete as per std. specification and as per the direction of dept. officials.

Dismantling and clearing away carefully and stacking materials useful for reuse of Cracked Madras terrace roof of approximately 31cm thick and conveying the debris from inside to outside etc., complete complying with standard specification and as directed by the departmental officers.

Dismantling and clearing away carefully and stacking materials useful for reuse of damaged Mangalore tile roofing including removal of pan tiles , wooden reeper with T.W. planks and stacking of the useful materials etc. complete complying with standard specification and as directed by the departmental officers.

Dismantling of damaged undulated Floor finish and dadooing walls in cement mortar with mosaic tiles / glazed tiles / cuddapah slabs and conveying debries to ground level outside the building , etc., complete complying with standard specification and as directed by the departmental officers.

Removal of the existing detoriated lime plastering over the wall, arches, domes and special type of ceiling of Madras terraced type roof carefully without disturbing or damaging the rafters, etc., complete complying with standard specification and as directed by the departmental officers.

Racking out the brick joints of walls, arches, etc.,to a depth of approximately 5cm for a wall thickness of 45cm and above to remove the dead mortar in between the brick joints and cleaning the surface with coir brush and washed with pure water etc complete complying with standard specification and as directed by the departmental officers.

Clean removal of saline action over the stone pillars, brick wall etc., will paper pulp treatment by using floating paper, deionizer water, plastic bucket,coir, brush etc., complete complying with standard specification and as directed by the departmental officers.

Pointing , grouting and filleting the brick joint of wall and arches with lime mortar 1:2 (one of lime and two of sand) using Pollachi lime in all floors etc., complete complying with standard specification and as directed by the departmental officers.

Removing the existing vegetation growth in the Building by way of uprooting the plants manually and then drilling with power driller up to the root depth of plants obtain a clean and neat drill so as to continuously inspect and remove left over roots of vegetation growths and to inject pesticides into the holes so as to prevent further growth of vegetation in the future to safeguard the country old heritage building etc. The cost including the cost of pesticides used, hire charges of injecting machine for injecting chemicals, cost of tools and all labour charges, etc., complete and complying with standard specification and as directed by the departmental officers.

Small plant

Medium plant

Big plant

Carefully removing and scooping out the eroded and worn out bricks over the wall, arches and pillar etc and refixing and mending with similar bricks in lime mortar 1:2 (one of lime and two of sand) etc., complete complying with standard specification and as directed by the departmental officers.

50 Nos Bricks in 1sq.m area

5 Nos Bricks in 1sq.m area

Strengthening the existing walls by providing grouting by formation of two holes of size 1" with required intervals - depth of 350mm for an area of 1 sq.m and depending upon the site conditions injecting lime slurry consisting of lime mortar 1:2 (one lime and two of sand) using Pollachi lime in all floors added with grouting admixture by 2% weight of lime, by using required equipment and the rate includes the cost of all mate

Reconstruction of brick masonry wall with similar type of bricks in lime mortar 1:2 (one lime two sand) using wire cut brick of size 9"x4"x3" (Specially manufacturing) and using Pollachi lime in all floors as per traditional preparation and documented type construction such as arches and lintels, walls, etc., complete complying with standard specification and as directed by the departmental officers.

Replastering ( base plastering) the brick wall, pillars and arches, etc., with lime mortar 1:2 ( one of lime and two of sand) to a thickness of 30 mm laid in two layers of 15mm thick using Pollachi lime in all floors etc., complete complying with standard specification and as directed by the departmental officers.

Replastering the ceiling, etc., with Lime mortar 1:1.5 (one Lime and one and half sand), 20mm thick using Pollachi lime in all floors including labour charges, etc., complete complying with standard specifications as directed by the departmental officers.

Painting two coats of newly plastered wall surface with ready mixed plastic emulsion paint of first class quality and of approved colour over a priming coat including thorough scrapping, clean removal of dirt, and including necessary plaster of paris putty, wherever required etc., complete complying with standard specification.

Supplying and fixing of best quality and approved variety of ISMB girder of required size and section of make TATA or equivalent of size of various spans fixing below the madras terrace roof to support the roof in the places wherever necessary as directed by the departmental officers and fixed ISMB-girder ‘I’ Section over the bed blocks in the wall including cost of dismantling the brick work wherever necessary for fixing the ‘I’ Section and redoing the same and also the cost of ‘I’ Section labour charges hire charges for welding machineries, hoist for lifting and hire charges for hydraulic manuals Jacky and other allied tools etc., complete including the cost of porting of ISMB-girder ‘I’ section etc and one coat of red oxide primer etc., complete. The I beam has to be supported on brick wall using appropriate blocks so as to support the madras terrace roofing in all the floors etc., complete complying with standard specifications.(The make and brand of the ISMB girder I section should be got approved by the Executive Engineer before use on works).

Providing and fixing in position of cut stone bed blocks of size 1.20m x 0.50m x 0.20m using Cut stone for placing I-beams including cost of stone blocks,conveyance,lifting and placing in position as directed by the departmental officers.

Teakwood wrought & putup for joist, beam, rafters and purlins,etc., which are in full length new member placed for supporting the Madras Terrace roof/ Mangalore tiles roof or any other area in all floor as directed by the departmental officers by using well seasoned superior quality and approved variety of teakwood for heritage building work including fixing of iron holdfasts incase of doors, windows and ventilators etc.,and excluding cost of holdfasts and making necessary size holes in the masonry to receive the ends of wooden joists, beams, etc., all fixtures and fastenings etc., complete. Item to include all moulding and chamber to be made as per original design indicated by the Engineer In Charge. (The rate includes the cost of teakwood, labour charges for wrought and putup to the existing clue/design, fixing in position to true alignment and gradient wherever necessary. Complying with standard specifications and as directed by the departmental officers (sample of teakwood to be shown to the Executive Engineer concerned for approval before use on work). Application of Solignum on the wooden surface should also be done. In all floors

Labour charges for repairing the TW beam, joist including servicing and refixing

Redoing of Madras Terrace roof in all floors with one layer of brick on edge course laid as first layer over the existing Teakwood joists, Beams, I Sections, etc., which are placed at roof level in all floors using specially manufactured Terrace bricks for heritage works of size 150mm x 75mm x 25mm in lime mortar 1:1.5 (one lime and one and half sand). The second layer is laid with specially manufactured Terrace bricks for Heritage works of size 150mm x 75mm x 25mm in flat manner in lime mortar 1:2 ( one lime and t\wo sand) 20mm thick as base layer laid over the top of brick on edge course. Brick jelly lime concrete using broken brick jelly of size 20mm uniform gauge in pure slaked lime (no sand to be added) to the proportion of brick jelly to lime being 32:12.50 by volume laid over the second layer of terrace bricks for an average consolidated thickness of 100mm in a single layer of required slope/level as directed and finished by beating the concrete with wooden beaters of approved pattern, keeping the surface constantly wet by sprinkling lime jaggery (PALM JAGGERY) water. (Galnut of 10kg and jaggery of 10kg per one sq.m). The beating of the concrete is done continuously until the brick jelly lime concrete is well hardened. After ensuring the harden surface of brick jelly lime concrete, flat tiles of 150mm x 150mm x 25mm of specially manufactured superior quality to suit the heritage works is laid in two consecutive layers in lime mortar 1:2 (one lime and two sand) 15mm thick for each layer of flat tiles. The base mortar provided for the top course of flat tiles is mixed with SBR (Synthetic Butadiene Rubber) Polymer at the rate of 0.5 litres for one sq.m is applied for water proofing chemical treatment including neat finishing.

The Materials like Terrace bricks for the heritage work as from Thirukkattupalli and Pollachi lime should only be used. The period of interval between laying of I layer, II layer of terrace bricks, brick jelly lime concrete and flat tiles in two consecutive layers as directed by the departmental officers. The Madras Terrace roof laid over the roof joist, beam, etc., is well embedded in the wall to the required distance as directed by the Engineer In Charge. (The rate includes the cost of all materials like terrace brick for heritage works, brick jelly 20mm, Pollachi lime, flat tiles and SBR chemicals and labour charges for laying all items of works). Pollachi lime should only be used for preparation of mortar, brick jelly lime concrete etc.. The Terrace bricks, flat tiles should got approved by the Executive Engineer before use on works. The overall thickness of madras terrace roof laid is to be of 300mm as detailed below. Brick on edge course (I layer) = 75mm Base mortar for laying terrace bricks = 20mm Laying of terrace bricks (II layer) = 25mm Brick jelly lime concrete = 100mm Base mortar for flat tiles = 15mm Laying flat tiles(I course) = 25mm Base mortar for flat tiles (II layer) = 15mm Flat tiles (II course) = 25mm Total thickness = 300mm

Laying of roofing with Mangalore tiles over flat tiles set in Lime mortar 1:2 ( one of lime and two of sand) using Pollachi lime in all floors with flat tiles of size 150mm x 150mm x 12mm including Teak wood reepers of size (50mm x 12mm) complete complying with standard specification and as directed by the departmental officers. (The rate includes the cost of all materials like Mangalore tiles, flat tiles, and labour charges for laying of Mangalore tiles with flat tiles roof in position)

Grouting and stitching the cracked wall and arches by toothing method including required special bricks of size 8"x4"x2" wherever necessary cutting of groove and fixing of key stone of size 900mmx230mmx200mm in horizontal and finishing the surface with lime mortor as per orginal etc. excluding errection of scaffolding all labour charges, etc., complete and complying with standard specification and as directed by the departmental officers.

Finishing the top of roof with one course of machine pressed tiles of size 230mm x 230mm x 20mm of approved quality set in Cement Mortar 1:3 (One Cement and Three Sand) 12mm thick mixed with water proofing compound conforming to ISS at 2% by weight of cement used and the joints pointed neatly to full depth of tiles with the same cement mortar mixed with red oxide and water proofing compound including curing etc., complete complying with standard specification and as directed by the departmental officers

Providing water membrane treatment to terrace using with lime mortar 1:2 for the 20mm thickness using the fine river sand and synthetic butadine rubber (SBR)polymer 2.50 lt per 50kg of lime used complete complying with standard specifications and as directed by Departmental officers.

Making, supplying and fixing teak wood panelled Door shutters openable type by using well seasoned teak wood of superior quality and approved variety as per the original design and pattern instructed by the Engineer in charge. The door shutter is made with two number of 120mmx40mm size vertical styles, top rail, lock rails and bottom rails of size 125mmx40mm,250mm x 40mm, 170mmx40mm respectively. The door shutter panels is covered with teak wood planks of 25mm thick including all necessary fittings brass/steel hardwares like screws, nails, hinges, hooks, tower bolts, handle, aldrops of same design, size etc complete. item to also include making all the mouldings and design of the panels as in the existing evidence. item to include complete finishing of the shutters as directed by the departmental officer. (The rate inclusive of cost of all teak wood materials, Labour wrought and putup of door frames and shutters, cost of all furniture fittings, labour charges for fixing inposition etc., complete complying with standard specifications. (Two leaves)

Making, supplying and fixing of panelled window with Teak wood window shutter is made with two number of vertical styles, top rail, lock rails and bottom rail. The window shutter panels is covered with teak wood planks of 35mm thick including all necessary fittings brass/steel hardwaraes like screws, nails, hinges, hooks, tower bolts, handle, aldrops of same design, size etc complete. item to also include making all the mouldings and design of the panels as in the existing evidence. item to include complete finishing of the shutters as directed by the departmental officer. (The rate inclusive of cost of all teak wood materials, Labour wrought and putup of door frames and shutters, cost of all furniture fittings, labour charges for fixing inposition etc., complete complying with standard specifications).

Painting new iron works such as steel doors, windows, ventilators, window bars, balustrades etc., with two coats of best approved first quality and colour of synthetic enamel paint over the existing red oxide priming coat in all floors excluding cost of priming coat etc., complete complying with standard specification. (The make, quality and colour of paint should be got approved by the Executive Engineer before use on work

Painting wood work with two finishing coats of synthetic enamel ready mixed paint of good quality and approved variety and colour over one coat priming coat in all floors including the cost of priming coat etc., complete complying with standard specification and as directed by the departmental officers. (The make, quality and colour of paint should be got approved by the Executive Engineer before use on works.)

Revarnishing with old/ new wood work with two coats of best melamine varnish of approved quality and brand including preparation of surface etc.. The rate is inclusive the cost of all material, labour charges and finishing neatly etc., complete compluing with standard specification and as directed by the departmental officers

Paving the floor with best quality Heritage patterned Tiles of size 200 x 200 x 20mm of approved colour, shade and quality laid in cement mortar 1:3 (one cement and three sand) 20mm thick in all floors and the top pointed with the white cement mixed same colour pigments etc., complete complying with standard specification. (The make and brand of the tiles should be got approved by Executive Engineer before use on works)

Renewing the damaged sunshade with new superior quality of teak wood, Manglore tile roofing at the top. The sunshade if fixed on wall with teak wood of size 80mmx 100 mm fixed on the wall directly, additional inclined brcing provides on the sides of window using teak wood sized 80mm x 80mm , the top teak wood 50mm x 80mm in cross section from the wall is rested at end running member 80mm x 100mm . The top manglore tiles are rested on best teak wood reepers of size 50mm x 25mm . the rate inclusive of cost of dismantling damged tile, teak wood members without damaging to the wall, refixing, labour charges, but excluding of scaffolding charges, etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and fixing MS grills for doors, windows and ventilators of approved design and as directed by the departmental officers including cost of MS grills labour charges and cost of one of red oxide primer coat etc., complete complying with std. specification.

Renewing the damaged ornamental cornice around the outer wall cornice portion as per existing style and clues to a height of 0.25m with top and bottom width of 0.28m and 0.08m respectively including removing the brick work and redoing the brick work in lime mortar 1:2 (one of lime and two of sand) and plastering with lime mortar 1:2 (one of lime and two of sand) 30mm thick laid in two layers and., complete complying with standard specification and as directed by the departmental officers.

Providing two legged scaffolding using 48.30mm dia heavy duty MS pipe over all height of 3.00m the distance between 2 legs being 1.25m and the spacing of the post being 2m in each rows and providing platform with C.W. planks using 40mm thick silver oak and 1.00m wide in complete form with horizontal bracings @ 1.50m c/c vertical direction and with cross bracings using same 48.30mm dia including cutting, threading assembly with red oxide primer, labour charges cost of specials such on large plate, shoe, carcher, coupling, bolt and nut transportation charges. The bottom of vertical post shall rest on 300x300x70mm 1:2:4 concrete base etc complete complying with standard specification and as directed by the departmental officers.

For Initial height of 3m

For every additional 2.5m height

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)

Plane surface such as Rcc floor slab, roof,slab,rectangular,square Tee or Ell beam, lintel, bed block staircase waist slab, landing slab, landing beam, portico beam, portico slab, etc.

Providing additional strutting to centering of RCC slabs of plain surface for every additional 1.0 metre height or part thereof but not less than 30 cm, over the initial 3.00 metre height from floor level using casurina props of 10cm to 13cm dia including cross bracing etc., complete complying with standard specification and as directed by the department officers.

White washing three coats of inner walls/ceiling with freshly burnt white shell lime (Pollachi lime) in all floors including cost of lime, blue powder fevicol type gum, brushes, The rate inclusive of cost of all materials and labour charges etc., complete complying with standard specification and as directed by the departmental officers

Renewing and fixing of glazed ventilator with new Teak wood glazed ventilator of size 1.20m x 0.60m by using Teak wood scanting thickness of size 0.04m frames fixed with 4mm thick pin headed glass including labour for wrought put up and fixing the ventilator in position with necessary furniture fittings including with neat finishing etc., complete complying with standard specifications and as directed by the departmental officers.

Finishing the new/old plastered surface with Class C Lime as per IS 712-1973 in Three layers two base coat and one top coat of fine quality Metakaolin lime (M-Lime) which is a dehydroxylated form of the clay mineral Kaolinite. The top finished coat should be done as per approved colour and texture, or as directed by conversation architect/engineer in charge etc complete complying with standard specification and as directed by the departmental officers.

Providing pest control with antitermite treatement drilling holes at junction of walls with floors at 300mm intervals and injucting chemical emulsion on those with cement etc. making holes along the vertical surface out side the walls at 150mm intervals to the depth of 450mm pointing chemical emulsion into the holes and closing holes with chemical etc. spraying all surface of treatment is to be done as per IS code no:5313/ Part III 1981 with approved chemical.(The chemical is to be used on the work should be got approved by the Executive Engineer before use on work) etc complete complying with standard specification and as directed by the departmental officers.

Laying Brick jelly lime concrete in lime mortar 1:2 ( One lime and two brick jelly ) (no sand to be added) using 20 mm gauge brick jelly for foundation, flooring including dewatering wherever necessary and laid in layers well rammed, consolidated etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and fixing in position best approved of Cast iron rain water down fall pipes including cost of necessary shoe, bend, cast iron gratings of required size and special clamps, brass screws, nails, etc., and fixing of cast iron gratings at junction of parapet and the roof slab including finishing neatly etc., complete. The rate shall be inclusive of cast of removable cast iron grating. The pipe shall be fixed in wall with special type of "U" clamp at the centre of the pipe line in addition to those for more than 3.0 meter pipe length, etc., complete complying with standard specification.

Construction of mortar pit of inner size 0.90m x 0.45m with brick partition wall 11.50cm thick in cement mortar 1:3 (one cement and three sand) for 60cm height with necessary earth work open excavation for a size of 1.43m x 0.98m to a depth of 0.91m and sand filling for 15cm thick, Plain Cement Concrete 1:5:10 (one cement, five sand and ten 40mm HBG stone jelly), 8cm thick with plastering 1:5 (one cement and sand), 12mm thick on both sides and top etc., complying with standard specification and as directed by the departmental officers.

Collecting the fallen damaged Madras terrace roof which includes brick on edge, flat tiles 3 layers, weathering course and intermediate lime layers, segregating them and conveyance for the inside of the building to the out side stack yard point by specialized labour by head load with necessary preventive and precautionary measures with helmet, safety belts and ropes, and from the stack yard these debries are conveyed by tipper lorries with help of JCB as on when required and as directed by the departmental officers.

Collecting the scattered debris from the campus and conveying away the same to outside by lorry to a lead of 9km including loading and unloading charges and dumping in low places and leveling etc., Complete complying with standard specification and as directed by the departmental officers.

Providing and laying protection covering over stone and tiled flooring surfaces by using POP over plastic sheets to protect the surface underneath from scratches, damage and abrasion etc. until the completion of all restoration works in the areas as directed by the departmental officers.

K.C.JAYAKUMAR (BID ID -1481742)

A T Santhanam (BID ID -1482233)