REPAIR REPLACEMENT TO VARIOUS BR NATURE WORKS IN ZONE A AT AGE BR I UNDER GE MIS MHOW

M&L for roughening/taking down existing roof treatment surfaces including plaster over old concrete roof by picking, hacking, scraping, sweeping clean and washing down with water to remove all dust, loose particles and other deleterious matter, preparing the surface for receiving new treatment complete all as specified and directed by the Engineer-in-Charge. Note: (i) All demolished materials/debris arising out of the above work shall be collected, loaded, transported and removed outside Defence land and disposed of as directed by the Engineer-in-Charge. (ii) Rate quoted shall be deemed to include scaffolding, staging, ladders, safety arrangements, protective measures and all other incidental charges necessary for safe and satisfactory execution of the work. No extra claim whatsoever shall be entertained on this account.

M&L for brushing neat cement slurry with 3 Kg of cement per Sqm for bonding of old concrete surface to new concrete/plaster surfaces complete all as specified and directed. Note: (i) Rate quoted shall be deemed to include scaffolding, staging, ladders, safety arrangements, protective measures and all other incidental charges necessary for safe and satisfactory execution of the work. No extra claim whatsoever shall be entertained on this account.

M&L for cutting out cracks to 6 mm wide 'V' section in existing roofs or terrace (if cracks > 2.5 mm wide), cleaning out, wetting, grouting with and including chemical compound, water and cement Sand slurry in the proportion of (1:3) by weight mix or as per manufacturers instructions all as specified and directed complete. Note: (i) All demolished materials/debris arising out of the above work shall be collected, loaded, transported and removed outside Defence land and disposed of as directed by the Engineer-in-Charge. (ii) Rate quoted shall be deemed to include scaffolding, staging, ladders, safety arrangements, protective measures and all other incidental charges necessary for safe and satisfactory execution of the work. No extra claim whatsoever shall be entertained on this account.

M&L for PCC 1:2:4 type B-0 (using 12.5 mm graded crushed stone aggregate) mixed with integral waterproofing chemical @ 200 millilitre per 50 Kg per cement, as in padding on roof surface for correcting / making proper slope on roof, and finishing the surfaces fair and even without using extra cement complete all as specified. Note:- (i) Liquid WPC shall be measured and paid separately. (ii) Rate quoted shall be deemed to include scaffolding, staging, ladders, safety arrangements, protective measures and all other incidental charges necessary for safe and satisfactory execution of the work. No extra claim whatsoever shall be entertained on this account.

M&L for 10 mm thick rendering in CM (1:3) mixed with integral water proofing chemical compound @ 200 mililitre per 50 Kg cement as per manufacturers instructions over concrete surface and finishing the surface fair and even without using extra cement complete all as specified and directed. Note:- (i) Liquid WPC shall be measured and paid separately. (ii) Rate quoted shall be deemed to include scaffolding, staging, ladders, safety arrangements, protective measures and all other incidental charges necessary for safe and satisfactory execution of the work. No extra claim whatsoever shall be entertained on this account.

M&L for providing complete waterproofing treatment to non-approachable/non-accessible roof surfaces, including horizontal and vertical surfaces, in the following sequence through the manufacturer or its authorized applicator, complete all as specified and directed by the Engineer-in-Charge:- (i) Cleaning of newly rendered/prepared surfaces thoroughly and allowing the surfaces to dry completely. (ii) Applying one coat of oxidized bitumen-based solvent primer @ 0.30 kg/sqm uniformly over the prepared surface. (iii) Laying 3 mm thick APP modified waterproofing membrane, reinforced and approved for waterproofing applications, with side and end overlaps of not less than 100 mm, properly sealed and bonded to the surface by torch-on method, including treatment to junctions, fillets, parapets and vertical surfaces as required. (iv) Applying two coats of bituminous aluminium paint over the APP membrane @ 200 grams/sqm (minimum) per coat, complete. Note:- Waterproofing treatment shall be executed either by the manufacturer or by an authorized applicator approved by the manufacturer.

M&L for repairing damaged RCC roof projections, chajjas, roofs, fascia, columns and similar members by carrying out necessary surface preparation including scraping, cutting, chiselling and removal of all loose and damaged concrete, derusting and cleaning of exposed reinforcement, and cleaning of all surfaces. Applying one coat of approved rust remover by brushing on exposed rusted reinforcement to remove loose rust particles and allowing the same to dry for 2 to 3 hours. Fixing additional reinforcement, where required, by drilling holes at suitable spacing, filling the holes with approved epoxy resin up to two-thirds depth and inserting reinforcement bars therein, including tying/binding with existing reinforcement. Applying cement slurry coat on the prepared surface and thereafter rendering/plastering with cement, sand and polymer liquid in the proportion of 1:3 with polymer dosage @ 15% by weight of cement, mixed with water as required, finished even and smooth, including forming drip grooves (water-dropping grooves) to edges of projections/chajjas, complete all as specified and directed by the Engineer-in-Charge. Note : (i) The work shall be carried out on buildings up to 8.0 m height. The quoted rate shall be deemed to include scaffolding, staging, ladders, safety arrangements, protective measures and all other incidental charges necessary for the safe and satisfactory execution of the work. No extra payment shall be admissible on this account. (ii) Reinforcement steel shall be measured and paid for separately.

M&L for repairing spalled concrete from RCC members such as ceilings, beams, columns, parapets, chajjas, fins, facias, lintels and similar structural elements, in the following stages, complete all as specified and directed by the Engineer-in-Charge:- (a) Preparation of existing surfaces by chipping out all unsound, weak and loose concrete manually or with an electric hammer, including tapping edges, forming square shoulders to cavities, removing all loose materials and debris, for a depth not exceeding 50 mm, complete. (b) M&L for applying one coat of approved rust remover-cum-passivator, Sika Rustoff-100 / make as per Particular Specification (list of Make), @ 0.20 kg/sqm per coat on exposed reinforcement as per manufacturer's instructions to remove rust and prepare reinforcement for further treatment. (c) M&L for applying epoxy-based zinc-rich rebar corrosion protection coating, Fiazin® / make as per Particular Specification (list of Make), @ 0.15 kg/sqm per coat on cleaned reinforcement as per manufacturer's instructions. (d) Mixing and applying two-component epoxy resin concrete bonding coat, Sikadur®-32 LP A&B / make as per Particular Specification (list of Make), @ 0.40 kg/sqm, mixed and applied strictly in accordance with the manufacturer's instructions, including thorough cleaning and preparation of concrete surfaces and application over existing and newly fixed reinforcement wherever required, complete. (e) M&L for applying pre-batched, single-component polymer-modified cementitious patch repair mortar, Sika MonoTop® / make as per Particular Specification (list of Make), in layers not exceeding 15 mm thickness each, for a total repair thickness not exceeding 50 mm, to match the existing profile and finish on sides and soffits of slabs, chajjas, fins, facias, parapets, lintels, columns, beams and similar RCC members, complete. Note:-(i) The quoted rate shall be deemed to include scaffolding, staging, shuttering, ladders, safety arrangements, protective measures, cutting chases into brickwork or RCC members, curing, finishing and all incidental charges necessary for the satisfactory execution of the work at any height up to G+1 storey buildings. No extra payment shall be admissible on these accounts. (ii) Reinforcement steel, if required to be provided and fixed, shall be measured and paid for separately under the relevant item of work. (iii) All materials shall be applied strictly in accordance with the respective manufacturer's specifications and recommendations.

M&L for anchoring steel reinforcement bars in RCC members of any type, size and location by drilling holes of depth not less than 10 times the diameter (10d) of reinforcement bars up to 16 mm diameter, cleaning the holes thoroughly by brushing and air blowing to remove dust and loose particles, and fixing the reinforcement bars in position with approved chemical anchoring compound such as Lokfix of FOSROC, Krishna Conchem, Dr. Fixit or equivalent approved make as specified in the Particular Specifications, complete all as specified and directed by the Engineer-in-Charge. Note:-(i) The quoted rate shall be deemed to include scaffolding, staging, safety arrangements and all incidental charges necessary for proper execution of the work. No extra payment shall be admissible on this account. (ii) Reinforcement bars shall be measured and paid for separately.

S&F hard drawn steel wire fabric weighing not exceeding 4.00 kg/sqm, cut to required lengths and bent to the required shape, fixed in position as reinforcement, including tying with annealed mild steel binding wire not less than 0.90 mm diameter, complete all as specified and directed by the Engineer-in-Charge.