CERTAIN REPAIRS TO DAMAGED RCC MEMBERS CHAJJA FINS FACIA AND OTHER CONNECTED ITEMS UNDER AGE B R EAST

Amount

M&L for repair to damaged existing surfaces upto 15 m height from plinth level by structural strengthening using epoxy injection grouting as per manufacturer instructions of make approved by the GE Complete all as specified and directed by Engr-in Charge and as under :- (a).High strength epoxy resin based Injection Grouting, Automatic NRV packers in all column and beams from all access side distance of injections will be 500 m c/c in matrix pattern until column is submerged in dampness of chemical. (b) injection grouting using two component grouting polymer having low viscosity, high molecular weight, thermosetting to reach very deep pores, voids, cracks and honeycomb in the concrete, specific gravity of which shall be 0.95, pH of 2-4,viscosity of 20-25 sec by B/4 ford cup and having curing time of 30-90 minutes area by suitable gun/pump at required pressure (100 bar to 150 Bar, including cutting of nipples after curing etc and sealing the nozzles with epoxy putty and preparing the surface to match with the existing surfaces, complete all as directed.

M&L for dismantling/taking down unserviceable cement plaster loose/unsound weaken cement concrete of any description and in any position from existing internal/External surfaces with power driven pneumetic chisel and removal to outsides MOD land,complete all as specified and directed by engineer-in-charge.

M&L for Sprinkling sand particles on the final layer of saturant making mechanical key, over which applying Single component, fiber reinforced cementitious repair mortar which is reinforced with specially designed bean shaped, alkali resistant synthetic fibers for exceptional resistance to cracking for a thickness of 10 mm.cement and sand can be used for finishing the surface smooth and even ,water ratio of which shall be 0.16, 28 days compressive strength shall be 30 MPa,mixed density shall be 2.18 kg/ltr, flexural strength shall be 6 MPa for 7 days and tensile strength for 7 days shall be more than 2MPa.Its adhesion bond strength shall be greater than 2 MPa with creep strain reduction of 8%. The modulus of elasticity of this product shall be 23-26 KN/mm² as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for MS TMT bars 12 mm dia and over as in reinforcement cut to length, bent to shape required including cranking, bending spirally for hooping for columns, hooking ends & binding with and including MS annealed wire not less than 0.9 mm dia complete all as specified and directed by Engineer in Charge.

M&L for drilling hole chemical anchoring of reinforcement on existing columns/chajja/beams with Hilti HIT-HY 70 , minimum hole depth 100mm, steel bar 12mm dia and drill bit dia 14mm, as per manufacturer instructions complete all as specified and directed by Engineer-in-Charge. Make: HT-V-R- M12x150 of Hilti Chemical or equivalent

M & L for applying 3 coats of cement based powder, modified with special additives and ready to use for positive and high negative hydrostatic pressure. Mixed with water ,it cures forming a coating , with limited thickness which resists the penetration of water to achieve compressive strength of 36 N/mm2 in 3 days, adhesion bond strength of 8.2 N/mm2. Coating to be applied after proper surface preparation to remove loose dust , dirt etc. Cleaning, mixing using slow speed electric drill and application of 2 coats as per ,manufacturer instructions complete all as specified and directed by Engineer in Charge.

M&L for applying 2 coats of two component amine cured epoxy mastic coating using Light brush blasting using nonmetallic abrasive leaving a clean, rough and even pattern.it should be based on a 100% epoxy formulation and contains no solvents or water diluents. Apply two coats with brush or squeeze to the existing surface, working well into the substrate.it should achieve Compressive Strength of >70 MPa after 14days, having pot life Pot life, minutes at 27⁰C, 100 g >40 mass as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for providing and applying a blend of Portland cement, graded fillers and chemical additives which impart controlled expansion, should be ready to use and can fill convoluted voids, compensates shrinkage at both plastic and Hardened states. Minimum thickness to be used is 50mm with addition of 10mm down aggregates of 25% of the weight of ready to use powder with W/P ratio of 0.18. Strength of 1 day to be 20N/mm2. Time of expansion to start after 20min of mixing and finish in 120 min of mixing. Epoxy bonding agent having mix density of 1.45 to 1.5 kg/ltr, compressive strength (BS-6319 PT 3)-25 Mpa at 7 days bond strength (ASTM C 881)-11 N/mm2 at 7 days, having an over lay time of 3 hrs at 30°C pouring of ready mixture into the formwork using suitable arrangement or if required using pumping device for and the bottom shuttering after 7 days ensuring proper bond between the poured mixture and existing concrete substrate etc including all tools and tackles as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for cleaning and removing all corrosion scales , rust etc. using emery / wire brush and finally cleaning using rust remover & cleaning agent that is one part alkaline based material, with corrosion inhibitors and dispersing agents and supplied as a clear brown solution. The specific gravity shall be 1.2 – 1.22 @ 25°C. The pH value shall be between 9.5 to 10. The coverage shall be 5 – 6 m2/ L complete all as specified and directed

M&L for providing 20 mm thick one component chloride free thixotropic fibre reinforced polymer modified repair mortar with alkali resistant synthetic fibres for exceptional resistance cracking complies ASTM C 109 with flexural strength ASTM C 348 @ 7 days meeting 7N/mm2, tensile strength @ 7days (ASTM C 307)> 3 N/mm2, compressive strength of 35Mpa at 7 day and 45Mpa at 28 days, Adhesion bond strength > 2 N/mm2 ,Creep Strain Reduction - 10% at the outer or inner RCC surface .cement and sand can be used for finishing purpose. It should be specially adhered to BS 6319 having specific gravity of 1.025 to 1.04, minimum 43% solid contents & M&L for providing and fixing welded MS wire mesh weighing not less than 1Kg/Sqm of size 50mmX50mm of 2.6mm dia on the prepared surface & surface should be cleaned and removed from dirt, fungus and all foreign material as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for providing and crack sealing cementitious material in powder form. It is easy to apply and can be finished or smoothened off with a blade or a damp sponge. It sets quickly on application and can be over coated with common paints / coatings, white coloured with setting time of 15min and Compressive strength as per ASTM C 109 of 22N in 7 days. Mixing Ratio to 1: 2.5 (Water: Powder) as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for applying 2 coats of Polymer modified primer for steel reinforcements which is a blend of Portland cement, graded fillers, corrosion inhibiting additive, and re-dispersible polymers in powder form that when mixed with water forms slurry for application by brush to cover exposed reinforcement. The product shall achieve an adhesion bond strength of 1 MPa to steel. It has got a pot life of 30 minutes @ 30°C. The touch-dry time shall be 10-15 minutes @ 30°C. The mixed density shall be 2.01-2.05. The water/powder ratio by weight shall be 0.3 It shall achieve coverage of 2 kg /Sq.Mtr @ 1.0mm thickness, applying on visible reinforcement surfaces to form a continuous film not less than 1mm thick as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for form work to sides and soffits of lintels, beams, columns, shelves, chajjas including overhangs etc for fair finished flat surface complete all as specified and directed by Engr-in-charge

M & L for curing of the surface using low viscosity emulsion which incorporate a special alkali reactive emulsion breaking system. It shoud be non-penetrating continuous filmcomplies with the internationally recognized ASTM C309-90 standards including all tools and tackels complete all as specified and directed by Engineer-in-Charge @ 250gms/Sqm. Product should have daylight Reflectance of 70% as per ASTM E-1347 as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for applying 2 coats of mixture of two monomer unsaturated liquid hydrocarbon , gaseous hydrocarbon and polymesrized them to get the high polymer dispersion emulsion successfully bonded to mortar, to improve adhesion to concrete, better durability, reduced shrinkage and increased flexibility and resistant to emulsification in damp condition modified Ensuring no porosity in new/old surface, temperatures between +5°C and +35°C, Resist to penetration of CO2 4.600 micron , compressive strength (11.5 N/mm2) at 3days strength - 11.5 (N/Sqmm ) and at 28 days - 25.30N/Sqmm as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for applying Polyster Resin based Anchoring material in concrete before fixing nozzle it should typically attains a compressive strength in excess of 20N/mm @ 3 hours and ultimate compressive strength of 70N/mm in 7 days (50mm x 50mm x50mm)when tested as per BS 6319 Part 2 : 1983 as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

Note: for item No. 1 to 18:- The work for items Srl No 1 to 18 shall be executed directly by manufacturer or through their authorized and qualified applicators,of any following manufacturer only. M/s Sika India Pvt Ltd, M/s Fosroc chemicals, M/s Thermax Limited, M/s Choksey Chemicals Pvt, M/s BOSTIK India Pvt limited.

The contractor must submit MOU with manufacturer/authorized applicator at the time of sample approval.

The contractor shall submit performance guarantee certificate for structural repair/leakage/seepage for a period of 10 years from the certified date of completion.

The unit quoted rate shall be inclusive of material, all labours, tools and plants including scaffolding required for working upto 15 mtr height from natural ground level.

The defect liability period for the structural repair work shall be 05 (five) years from the certified date of completion of work.

A security deposit of value equal to 2.5% of the rate quoted against each item shall be retained from Final bill payment due to the contractor for the defect liability period.

The unit quoted rate is deemed to include taking down of water pipe, tanks, wires etc found on roof or other working areas and re-fix same at the original position after completion of work.

Adoption of necessary safety arrangement like safety belts, ropes, helmet, netting etc are required for safety of working labour at height exceeding 3 to 15 mtr shall be mandatory & deemed to be included in the unit quoted rate

Removing plant/Uprooting of vegetation growth including roots on wall/roof/parapet near pipes etc and applying acid treatment after removing roots for preventing regrowth and making good disturbed surfaces/area in superficial area exc 150Sq.cm but n.exc 400 sq.cm and averaging depth not exceeding 10 cm by using PCC 1:2:4 type B-0 (using 12.5 mm graded stone aggregate) or 10mm thick plastering in cement mortar 1:3 as required and finishing the surfaces to match with the existing surface complete all as specified and directed.

S&F in repairs Stainless steel wire cloth 0.36mm nominal dia of wire and average width of aperture 1.4mm to fixing wooden/steel/Alumnium windows and doors complete all as specified and directed.

Material and labour for Preparation of old decorated plastered or unplastered surface of wall, brooming down or steel wire brushing down smoke soot, moulds mass, efflorescent , trading, oil, greasy spots and applying one coat of cement based paint, complete all as specified and as directed.

Petty repairs to MS windows n. exe 3 Sqm taking down and refixing the same of window glass, hacking out old putty or removing beads etc, and reputtying all glass and painting/oiling puttied surface to match existing work and including taking down and refixing the same position complete all as specified & directed. Note:-(i) The unit quoted rate shall be inclusive of material,any helght of any size and all labours, tools and plants including scaffolding, safety helmet, rope required for working upto approx 15 mtr height from natural ground level and nothing extra shall be admissible on this account.

M&L Hacking out old broken glass (any thickness, size, quality or description) from wooden frames/steel frames glazed with putty or fixed with beads and material and labour for 4mm thick plain sheet glass ordinary quality and glazed with oil putty or fixed with fillets 2nd class hard wood of sectional area not exc 3 Sqcm and glass not exc 0.5 Sqm each pane complete all as specified and directed.

Taking down MS window shutters n. exc 1.5 Sqm through cutting of existing any type of hinges, handle and tower bolt and fixing new box type hinges, MS handle and MS tower bolt in the same window by welding. The quoted rates shall be included the following aspect:- (a) Cutting of existing piano hinges, handle and tower bolt from window frame and shutter. (b) Fixing of removed shutter in the same frame on MS box type hinges 100mm, MS handle 100mm and MS tower bolt 100mm by welding. (c) Easing and adjusting the shutter before re-fixing if required. (d) Finishing the window frame and shutter with two coat of synthetic enamel paint. (e) Necessary scaffolding material to be included as the building height is more than 10mtr. Note : Box type hinges, handle and tower bolt will be measured separately as supply only and labour element is deemed to be included in this item.

Supply only MS Box type hinges 50mm size complete all as specified and directed

Supply only MS Handle 100mm size complete all as specified and directed

Supply only MS tower bolt 75mm size complete all as specified and directed

S&F in repairs Stainless steel peg set of having 5 pegs powder coated fixed to wall surface with PVC plug and screw including taking down complete all as specified and directed.

Supply and fixing in repair steel window handles with nuts and bolts or with screws including welding/fixing with nuts complete all as specified and directed by Engr-in-charge.

Supply and fixing in repair steel window peg stay including welding/fixing with nuts, complete all as specified and directed by Engr-in-charge.

Supply and fixing in repair steel window hinges as per sample by welding all as specified and directed by Engr-in-charge.

Taking down chowkat or frame(wooden/steel) exceeding 1.50 Sqm not exceeding 4.0 Sqm each with shutter (with out taking off shutters from the frame) all as specified and as directed.

Taking down shutters of any description exc 1.0 Sq.m and n.exc 2.0 Sq.m each complete all as specified and directed.

M&L Second class hard wood plain, solid, straight Chowkats and frames, wrought, framed, rebated on the solid, rounded or chamfered, put together with glue pinned at joints complete all as specified and directed.

Supply and Fixing 30 mm thick factory made flush shutter solid core construction with block board core and plywood face panels, comercial type on both faces complete all as specified and directed.

S&F Factory made 35mm thick Glazed and skeleton shutters for windows/doors, open rebated and prepared to receive glass, gauze, etc. divided into squares, with plain, chamfered or rounded, mitred and rebated sash bars, any numbers, edges of framing plain, chamfered or rounded. fitted with cut and mitred beads for securing glass, etc.; sizes of members of shutters as specified in SSR Part I, Section 8, clause 8.24 (a); all as specified and directed.

Preparation of new wood or wooden surface of any description not otherwise described over 10cm width or girth and applying two coats of synthetic enamel paint over a coat of pink primer complete all as specified and directed

Supply and fixing 100mm long Butt hinges medium weight cold rolled stainless steel, and fixed complete all as specified and as directed.

Supply and fixing 200 mm long aluminIum anodized barrel tower bolt extruded section, complete all as specified and as directed.

S&F Aluminum handles cast type anodised 200 mm long complete all as specified and as directed.

S&F 250mm Aluminium alloy, anodised, sliding door bolts with hasp, staple (bolt type) and fixing clips of sheet, cast or extruded sections and fixing bolts and sliding bolts of extrudud sections or cast- aluminIum alloy and fixed complete all as specified and as directed.

S&F Stainless steel wire cloth 0.36mm nominal dia of wire and average width of aperture 1.4mm complete all as specified and directed.

S&F Floor door stopper of aluminium alloy body and tongue anodized with hard drawn steel spring fixed in floor overall 140mm complete including taking down existing one all as specified and as directed.

S&F Plain fillets, square, rectangular or triangular in section, clean sawn, secured with nails or brads in sectional area 6 sq.cm but not exc 13 sq cm including taking down exisiting one complete all as specified and as directed.

Taking down chowkhat or frame(wooden/steel/Alumnium) not exceeding 1.5 Sqm each with shutter (with out taking off shutters from the frame) complete all as specified and as directed.

S&F Steel windows with side hung shutters including projecting type hinges, frame with steel handle, and steel peg stay, complete with glazing bars, dovetailed or welded complete all as specified and directed.

S&F 4 mm thick sheet glass ordinary quality and glazing complete in square n exc 0.50Sqm each pane complete all as specified and directed.

S&F frosted glass 4.0mm thick, pin head type n exc 0.5 Sq.m in each pane and fixed, complete all as specified and directed. Note :- An amount of Rs 3390.00 on account of credit schedule for schedule 'A' part II shall be deducted from the total amount of BOQ to arrive at the contract sum.

M/s R.D. Company

M/s Raghav Traders