REPAIR MAINT TO SPALLING OUT COLUMN BEAM CEILING LINTEL RCC CHAJJAS AND OTHER CONNECTED WORK UNDER AGE BR WEST

Amount

M&L for applying 3 coats of corrosion inhibiting, polymer matrix with excellent mechanical properties such as adhesion and elongation as waterproofing barrier coating. It should be non toxic and non-re-emulsifying Should conform to JIS Z 1535 and IS-3085 and DIN-1048 having Hardness - Shore 'D' scale of 20,wet density of 1.66 g/cc, flexibility at low temperatures, tensile strength > 0.4 MPa, Elongation > 20%, adhesion to substrate greater than 1.5 N/mm², waterproofing to withstand 330 KPa positive pressure and 160 KPa negative pressure, Mixing should be done by electric rotary mixers. The substrate should be free of laitance, loose concrete, dust, oil etc. if applied on screed or any other cementitious surface the surface should be properly cured prior to application complete all as specified and directed by Engineer-in-charge.

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 ASTMC 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 complete all as specified and as directed by Engineer-in-charge.

M&L for providing 10 mm thick one component chloride free thixotropic fibre reinforced polymer modified repair mortar with alkali resistant synthetic fibres for exceptional resistance cracking complies ASTMC 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 complete all as specified and as directed by Engineer-in-charge.

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 be removed from dirt, fungus and all foreign material 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 cements, 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 removing old existing rubbish/battered/useless mixture of the binding materials such as cement / Lime and fine aggregate (<4.5mm retained on IS Sieve), loose/unsound weaken mixture of binding materials such as cement / Lime and coarse Aggregate (>4.5mm retained on IS Sieve), fine Aggregate of any description and in any position from existing external/internal surfaces of RCC components or any surface having average profundity of 15mm (Approx height 10m from natural ground level) by hand tool that has a long metal blade with a sharp edge at the end, chisel and hammer or using robust pneumatic chisel hand tools and removal beyond MoD land including cutting of all edges, making square shoulders of the aperture, coarsen the smooth surfaces, curettage /removing of all deteriorated/decayed loose surface complete all as specified and directed by Engineer-in-charge.

M&L for drilling hole in RCC/Bricks structures using drilling machine up to a depth of 15 cm and 18 mm dia, removing dust, etc by vacuum cleaner and blowers, providing and fixing of heavy grade GI pipe nipple 15 mm dia, 75 mm long, @ 1.0 mtr c/c in both direction and injection cement slurry mixed with liquid integral waterproofing compound confirms to IS 2645-2003. having specific gravity 1.1-1.2 gms/cc, chloride content: Nil as per IS 2645-2003 & cement modifier having specific gravity of 1.02 and -Cementations based plasticized grout admixture, @ 225 gm/50kg of cement bag through nipple and closing ends nipple epoxy putty/silica jelly after injecting the chemicals mixed with cement slurry complete all as specified and directed by Engineer-in-charge.

M&L for providing filling epoxy putty into crack after opening up cracks in V-groove manner approximate 5 x 5mm size using mechanical cutter,properly cleaning the same to remove loose dust dirt etc and filling the same using three component,solvent free,Thyxotropic,Epoxy resin based putty having 100% solid contents,density of 1.64-1.68 gm/cc,comprehensive strength @7days- 50N/mm², pot life 40 minutes at 25°C drying time 8 hrs at 25°C Recoatable time 24 hrs after finishing in line and level with existing concrete surface etc 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 and the pH value shall be between 9.5 to 10. The coverage shall be 5 – 6 m2/ L as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for providing and spraying polyamine cured epoxy coating incorporating a special alkali reactive emulsion breaking system compound over the plastered surface. This impervious film prevents excessive water evaporation which in turn permits more efficient cement hydration, thus reducing shrinkage and increasing durability. It shall have a specific gravity of 1.02 and the minimum application temperature shall be 10°C and the strength of concrete complies with the internationally recognised ASTM C309-90 standards typically within the range of 200 to 285 ml/sqm, SG - 1.02 as per manufacturer instructions including all tools and tackles 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 aditives which impart controlled expansion, should be ready to use and can fill convoluted voids, componsates shrikage 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 complete all as specified and directed by Engr-in-Charge.

M&L for resistance to aggressive agents like atmospheric gases, carbon dioxide, chloride ions, sulphates, oxygen and water, cracks, UV rays and rain, efflorescence and lime blooming by using two coats of water based Alicyclic primer & protect surface to carbon dioxide and adorning coating contains special glass fibres to maintain anti cracking properties for concrete/ Masonary, apply Acrylic emulsion Sealer Coat chemical having High performance Water Based aliphatic protective coating to concrete & masonary surface new or old, after proper surface Preparation, cleaning of dust, dirt, etc. System should comprise of water based acrylic polymer primer coating on prepared surface at 260-280 microns DFT (Density Function Theory) and at 200 microns WFT ( Water Function Theory) using suitable brush or roller, overcoating time @ 30°C shall be 8 hours as per manufacturer instructions complete all as specified and directed by Engineer-in-charge

M&L for providing and laying 2 coats of acrylic elastomeric exterior waterproofing coating. The coating to be applied on wall shall be liquid applied highly durable waterproof coating system for wall, based on high quality acrylic emulsion, functional filler, sunlight stable pigment and quality fungicides. It shall have properties that provide features like crack bridging ability, breathability, flexibility & exterior durability and resists micro-organism growth.It shall cover hairline cracks up to 0.5 mm effectively. It shall have excellent crack bridging ability and shall bridge cracks up to 2 mm width. The elongation at break is approx. 220 %. The tensile strength is 0.7 Mpa. It has a hardness shore ‘A’ scale of 80, with an adhesion strength of 3.4 Mpa. The coating is UV resistant, algae and fungus resistant, and has a water vapor permeability of 40 gm/m²/day and a crack bridging ability of 1-2 mm. The coating must be applied with temperature above 5°C and below 45°C. The coating shall be applied in two coats of by roller or brush application at the interval of 4-6 hours.Allow applied coating to dry or cure for 7 days complete all as specified and directed by Engineer-in-charge

M&L for Perforation in RC using twist & rotating mechanical cutting tool for Fastening to concrete for chemical anchoring having a Rapid strength gain, Vibration resistant, Corrosion resistant of reinforcement on existing RC Component with Hilti HIT-HY70 BS 5080 or equivalent as approved by GE, typically attains a compressive strength in excess of 20N/sqmm @ 3 hours and an ultimate compressive strength of 70N/sqmm in 7 days as per BS 6319 Part 2 : 1983, maximum hole depth 75mm, steel bar 12mm dia and drill bit size14mm with polyster resin based anchoring material for H/V/Large annular applications or post installed bars or in accordance with bar thickness complete all as specified and directed by Engr-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 treating the existing pipe penetrations using non-shrink, free flowing, cementitious grout .The compressive strength of the grout must exceed 50 N/mm2 at 7 days and 60 N/mm2 at 28 days. The flexural strength of grout must exceed 9N/mm2 @ 28 days. Fresh wet density of the mixed grout must exceed 2150 kg/m3. Further flashing the area using solvent based UV resistant polyurethane based waterproofing material having minimum tensile strength on 4 N/mm2 and minimum elongation of 800% 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 and ultimate compressive strength of 70N/mm in 7 days (50mm x 50mm x 50mm)when tested as per BS 6319 Part 2 : 1983 as per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for applying two 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 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 minutes at 27⁰C, 100 g >40 massas per manufacturer instructions complete all as specified and directed by Engineer-in-charge.

M&L for MS TMT bars 8mm 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 0.9mm dia complete all as specified and directed by the Engineer-in-Charge

Note: for item No. 1 to 21:- The work for items Srl No 1 to 21 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

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.

Petty repairs to MS windows n. exc 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 included taking down and refixing the same position complete all as 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.

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

S&F in 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 in 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.

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.

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.

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 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 found required. (d) Finishing the window frame and shutter with two coat of 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.

Supply only MS Handle 100mm.

Supply only MS tower bolt 75mm

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

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

Material and labour for Preparation of old decorated plastered or unplastered surface of wall, chajja,ceiling, balcony, facia etc., brooming down or steel wire brushing down smoke soot, moulds mass, efflorescent, trading, oil, greasy spots and applying one coat of white wash complete all as specified and directed.

M&L 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 oil bound distemper complete all as specified and as directed.

Taking down chowkhat 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.

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 me-mbers 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 Aluminium handles cast type anodised 200 mm long 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. Note :- An amount of Rs 1200.00 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

M/S SRI BALAJI ENTERPRISES