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| 1 | M&L for applying to the damaged concrete portion of slab/ columns/ beams/ chajjas/ parapet / roof projection/ balcony/ staircase with single component, fiber reinforced, dual shrinkage- compensated thixotropic, cementitious ptch repair mortar as approved makes (having the technical parameters mentioned in material specifications ) capable of applying up to 20-25mm thick in double layer initially by hand and finishing with troweled carefully compacting the same around the rebar and finishing to bring it in line with existing concrete surface with an average specified thickness complete all as specified and directed by Engineer-in-charge. |
| 2 | M & L for Chipping of 25-30 mm average thickness unsound/weak concrete material from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead. further applying polymer based bond coat on the prepared old surface of concrete /masonry to receive new polymer mortar/polymer modified mortar with two coats of approved make as per manufacturer specifications. Laying of polymer modified mortar shall be completed within the overlay time of bonding coat. This bond coat act as bonding agent between old and new concrete.further applying to the damaged concrete portion of slab / columns / beams / chajjas / parapet / roof projection/balcony/staircase with single component, fiber reinforced, dual shrinkage- compensated thixotropic, cementitious patch repair polymer modified mortar approved make (having the technical parameters mentioned in material specifications ) capable of applying up to 25-30 mm thick in singlelayer initially by hand and finishing with troweled carefully compacting the same around the rebar and finishing to bring it in line with existing concrete surface with an average specified thickness. its material consumption is 50kg/sqm for 25-30 mm thickness, complete all as specified and directed by Engineer-in-charge. Note : The quoted rate by the contractor shall include cleaning of surface, application as per instruction and scaffolding upto 20 mtr height. |
| 3 | M & L for Chipping of 5-10 mm average thickness unsound/weak concrete material from slab with manual Chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead. further applying polymer based bond coat on the prepared old surface of concrete /masonry to receive new polymer mortar/polymer modified mortar with two coats of approved make as per manufacturer specifications. Laying of polymer modified mortar shall be completed within the overlay time of bonding coat. This bond coat act as bonding agent between old and new concrete.further applying to the damaged concrete portion of slab/ chajjas / roof projection with single component, fiber reinforced, dual shrinkage- compensated thixotropic, cementitious patch repair polymer modified mortar as per approved make (having the technical parameters mentioned in material specifications ) capable of applying up to 25-30 mm thick in single layer initially by hand and finishing with troweled carefully compacting the same around the rebar and finishing to bring it in line with existing concrete surface with an average specified thickness. its material consumption is 50kg/sqm for 25-30 mm thickness, complete all as specified and directed by Engineer-in-charge. Note : The quoted rate by the contractor shall include cleaning of surface, application as per instruction and scaffolding upto 20 mtr height. |
| 4 | S&F of new steel or rebars by drilling holes with 10 mm to 20mm dia and 100 to 200mm deep as per IS code of 10D formula and filling the holes after inserting of reinforcement dia 8 to 16mm for anchoring at ends/shear connector and filled the holes with one or two component styrene free vinylester resin anchor or two components, styrene & cement free epoxy- acrylate fixing and anchoring compound (having the technical parameters mentioned in material specifications) using standard sealant applicator gun after drilling holes of required diameter at required locations, for holding / fixing / placing in position the steel mesh reinforcement at desired level/ stretching complete all as specified and directed by Engineer-in-charge. Note : Steel/reinforcement shall be paid and measured separately. |
| 5 | M & L for applying bond coat on the prepared old surface of concrete/masonry to receive new polymer mortar/polymer modified mortar or micro concrete with two coats of approved makes per manufacturer specifications. Laying of reinstatement polymer mortar or micro concrete shall be completed within the overlay time of bonding coat. This bond coat act as bonding agent between old and new concrete complete all as specified and directed by Engineer-in-charge. |
| 6 | M&L for providing micro concrete with approved makes at the rate of 25kg per 0.0125 m3 with 20% properly graded 5mm to 10mm silt free aggregate as per manufacturer instructions and mixing concrete with mechanically electrically operated mixer machine etc complete all as specified and directed by Engineer-in-charge. |
| 7 | M & L for applying injection grouting through the nozzles. Drilling the holes of 12mm dia up to 100mm deep and fixing of nozzle of 10mm with using approved makes hardener chemicals. Inject the polymer based cement grout approved makes grout with cement to RCC wall/ceiling in adequate pressure and seal the nozzle complete as per manufacturer instruction complete all as specified and directed by Engineer-in-charge. |
| 8 | Taking down cement plaster in cement or cement lime mortar on brick or stone walls etc. including raking out joints, hacking for key, scrubbing down with water etc, Including removal of debries out side MD land complete all as specified and directed by Engineer-in-charge. |
| 9 | M&L for rendering 15 mm thick readymade plaster on inner/outer walls with approved makes by adding 17-19 % of potable water by weight of material. For thickness above 15 mm is recomemded to be applied in multiple layers, Ready-mix plaster shall complies with IS 1661-1972, IS 2250-1965,IS 2402-1963 and confirms the compressive strength @ 28 Days-10-12 Mpa/ Bulk density 1500-1600 Kg/m3 complete all as specified and directed by Engineer-in-charge. Note :- The quoted rate by contractor shall include cleaning of surface, application as per instruction and scaffolding upto 20 mtr height. |
| 10 | M & L for reinforced cement concrete to chajja, Fins, fascias, louvres, parapets, and railings exc.60cm in height, newels, balustrade, and the similar work including demolition of cement concrete reinforced in ground floors and pavings n.exc 15 cm thick(below or above ground level) complete all as specified and directed by Engineer-in-charge. |
| 11 | M & L for Formwork to Formwork to soffits of suspended slabs/col/beam such as roof slabs, floor slabs, landings and similar work; not exceeding 200mm thick (Horizontal or sloping) complete all as specified and directed by Engineer-in-Charge. |
| 12 | M & L Mild steel TMT bars 10mm dia and over, cut to length, bent to shape required, including cranking, bendingspirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips complete all as specified and directed by Engineer-in-charge. Note : Additional Reinforcement: Check the diameter of the existing rebars and if the diameter is less than 30% of the original diameter, provide additional reinforcement. Cut 12mm dia bars as main reinforcement to the required length with proper development length. Tie them to the prefixed shear connectors so that the additional rebar acts monolithically with the existing ones and core concrete. |
| 13 | M & L Mild steel TMT bars5mm dia and over upto and including 10mm dia in stirrups, spacers and binders, cut to length, bent to shape required, including cranking, bendingspirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips complete all as specified and directed by Engineer-in-charge. Note : Additional Reinforcement:In the case of the shear reinforcement also, if the diameter of the rebars are reduced, provide 8mm dia stirrups in the form of 2 \"U\" shaped bars. Tie them properly so that it has a tight contact with the main bars. |
| 14 | M&L for applying Two (any pattern as approved by GE) 100 % Premium acrylic emulsion paint having VOC lesss than 50 gm/Liter and UV resistance as per IS15489:2004 Alkali and fungal resistance , dirt resistance exterior paint of required shade (Company DEpot Tinted) with silicon additives @ 1.43liter /10 sqm over and including priming coat of exterior primer applied @ .9 liter/10 sqm over new/old surfaces complete all as specified and directed by Engineer-in-charge. |
| 15 | M&L for prepration of newly plastered ceiling surface and applying three coats of white wash on plastered surface complete all as specified and directed by Engineer-in-charge. |
| 16 | M&L for prepration of newly plastered surface of and applying two coats of oil bound distemper over a coat of alkali resistent paint primer complete all as specified and directed by Engineer-in-charge. |
| 17 | Complete removal existing treatment and applying1mm thick ofBirla white wall care putty to achieve smooth surfaces and applying two coats of Oil Bound Distemper of approved shade/tint over a coat of compatiable priming paint complete all as specified and directed by Engineer-in-charge. |
| 18 | Note :- (i)The structural rehabilitation treatment shall be applied by the company’s authorized applicator only. (ii) Contractor have to get prior approval of applicator or authorized agency by submitting its authorization letter to this office for approval prior to commencement of work. (iii) Submission of 10 year warranty certificate for waterproofing treatment work over roof is mandatory after completion of work. (iv) The cost of Scaffolding work required at certain places is including in the respective items catered for repairs itself. No extra shall be paid for the same. |
