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| 1 | (A) Dismantling work:Removing of existing lights and fittings from false ceiling including support from slab & cabling and safely keeping for refitting, light details are given below: |
| 2 | 4 feet tube with fittings. |
| 3 | 2 feet tube with fittings. |
| 4 | Single tube 9 W with round fitting. |
| 5 | Removing of existing ground floor fire alarm detectors and its cabling from above false ceiling and below false ceiling and keep safely for refitting. |
| 6 | Removing of existing steel panel based false ceiling including G.I. framing and its support from slab |
| 7 | Removing of Gypsum based false ceiling and modular false ceiling including all G.I. framing and its support from slab. |
| 8 | (B) Preparatory & Enabling Items: |
| 9 | Supporting the structural element temporarily using heavy duty flat headed steel props of minimum capacity 3 Ton and having height of up to 16’ erected vertically in plumb, braced horizontally and diagonally at center with each other’s using 40 NB steel pipes and supporting a continuous 4” x 3” wooden runner just below the structural element, resting on wooden block to support the structure provisionally during repair andjacketing etc. and maintaining them in position till required as directed by the Consultant (mode of measurement as per prop per repetition). |
| 10 | Providing and erecting at site self-supported two legged B class tubular steel scaffolding to reach any place of work on internal areas so as to reach elements of building, including proper levelling using base jacks, minimum One meter wide working platform at every 2 meter level, approaches, extension, stepped MS ladders, so as to reach all levels up to height of 4.5 meter for internal or as per site requirement, lifting tackle for men and materials, supporting stubs for scaffolding including anchoring on walls and restoring the same after removal, anchoring, etc. all complete, dismantling and taking away all materials and debris after completion of proposed work etc. all complete. (Measurement: Elevational area of scaffold erected for every two legs). |
| 11 | Providing and laying in position protective layer of 6 mm thick. HDPE cellular foam sheet on existing flooring including a separation layer of plastic/Paper in between, mixing, pouring & maintaining the same till completion of respective work, removing and cleaning the same after completion of work, disposal of debris outside the premises etc. complete. |
| 12 | Providing and fixing working platform at height of 10 feet or as directed by Engineer-in-Charge so as to protect the below working space area. The platform to be created with structural steel, MS pipes and 19mm wooden planks or 19 mm ply board to create false floor and covering up complete platform cover with nylon dust net as required. Removing it after completion of the work, cleaning the area etc. complete. The platform shall be capable for bearing of load of manpower movement, material, loos concreat during the breaking and repairing of slab. |
| 13 | (C) Structural Repairs : Chipping and Dismantling |
| 14 | Examining concrete by tapping with light hammer and marking of the loose concrete areas of structural elements in straight line geometrical forms, grooving the edges same with grinder up to 5 - 10 mm depth without damaging existing rebar’s, carefully removing carbonated concrete around the rebar’s up to 10 mm depth by low impact high frequency hammer/chipper and also removing of loose/damaged concrete as an where required, daily cleaning and stacking of debris at prescribed location in polypropylene/paper bags, disposing off the debris so generated on weekly basis outside the premises, etc. complete as directed by Engineer-in-Charge (Note: working platform, scaffolding and enabling, debris disposal items paid separately). |
| 15 | Carefully chipping, removing existing internal plaster up to 12 to 15 mm thick by low impact high frequency hammer/chipper without damaging the original sound brickwork or concrete including removal of POP/Gypsum plaster if any on walls/structural element any thickness, racking of joints, daily cleaning and stacking of debris at prescribed location in polypropylene/paper bags, disposing off the debris so generated on weekly basis outside the premises, etc. complete as directed by Engineer-in-Charge. (Note: working platform,Scaffolding, debris disposal and enabling items shall be paid separately, extra thickness, if any, will not be paid additionally.) |
| 16 | Carting away debris per Truck/Tractor: Carting Away the debris generated at site on weekly basis or as required and disposal of the same. Measurement shall be based on one truck load of 4 Cub.m volume each at distance upto 50 km including loading/unloading. |
| 17 | (C) Structural Repairs : Chipping and Dismantling |
| 18 | Drilling Holes of 12 mm dia, up to 100 mm deep holes in structural members at the intervals of 300 to 500 mm in staggered manner or along the crack as directed by the consultants in RC structural element including Cleaning of the holes by air blower and Inserting 12 mm dia. Teflon nozzles compatible with epoxy injector and having machined external end to receive outlet of grouting gun. Fix it inside the holesby applying thixotropic epoxy putty to ensure complete sealing and allow to cure the system for min. 8 hours before grouting including removing nozzle projections, excess sealant, if any, over concrete element grinding, levelling and finishing the external surface, after completion of the work, etc. complete. |
| 19 | Grouting, Injecting low viscosity high molecular weight thermoset polymer Monopole 250 H or equivalentby pressure andusing pressure epoxy injector with accessories till nozzles refused to accept the grout, Including Mixing material components Part A and Part B in requiredquantities as per manufacturer’s instructions by weigh batching, Filling the grouting gun with monopole 250 H equivalent and maintaining desired pressure in the gun, air compressor andat exit (minimum 3 to 4 kg/sq.cm) by a mechanism tomonitor both pressure gauges and controlling the same by release valves and release the grout as per requirement simultaneously to grout the structural element through prefixed nozzles till its refusal. Seal the nozzle with thixotropic epoxy putty after the refusal. Note: leakages through other nozzles or cracks are required to be monitored while grouting and such points to be sealed as and when required without any extra cost. |
| 20 | Grouting Injecting super low viscosity epoxy grout KP HP SLV 250 SR or equivalentby pressure and using pressure epoxy injector with accessories till nozzles refused to accept the grout, Including mixing material components Part A and Part B in required quantities as per manufacturer’s instruction byweigh batching, filling the grouting gun with KP HP SLV 250 SR and maintaining desired pressure in the gun, air compressor and at exit (minimum 3 to 4 kg/sq.cm) by a mechanism to monitor both pressure gauges and controlling the same by release valves and release the grout as per requirement simultaneously to grout the structural element through prefixed nozzles till its refusal. Seal the nozzle with thixotropic epoxy putty after the refusal.Note: leakages through other nozzles or cracks are required to be monitored while grouting and such points to be sealed as and when required without any extra cost. |
| 21 | (E) Steel Protection: Anti corrosive Treatment and Corrosion Inhibition |
| 22 | Clean existing reinforcement with wire brush/ rotary wire brush to make surface free from rust scales, loose material, dirt etc. complete and providing, applying two coats of alkaline rust converting primer confirming to ASTM-B- 117, on the existing rebar’s and allowing it to react with rust for 6 hours and form a corrosion resistant, insoluble andadherent protective layer, including cleaning the reinforcement, wire brushing to remove loose rust spalls, with time interval of 1hour between the coats. |
| 23 | Providing and application full and unbroken coating of anticorrosive protective zinc rich epoxy coating on expose reinforcement in two coats with time interval ofminimum One hour between each coat including mixing of both components of epoxy (A & B) by weight as per manufacturer’s specifications, brush application, curing to form a anticorrosive protective coating with high mechanical strength to cementations repair works etc. complete. |
| 24 | SHEAR CONNECTORS : Drilling 10-16mm dia holes up to a depth of 75mm maximum and fixing 8-12mm dia L shaped anchor rods as shear connectors at every 300mm c/c on the surfaces of the columns/beams or any other structural member as the case may be. Clean the same using water and make sure that there are no fine particles present in the hole. Mix the base and hardener of the polyester resin with the spatula thoroughly. Fill the drilled and cleaned holes to a minimum depth of 1/3rd of the hole with the prepared polyester resin. Make sure that the resin has reached till the end of the hole. At this stage push the shear connector gently in to the hole and finish the excess resin which comes out of the hole and allow the shear connectors not to be disturbed for minimum 20 minutes - complete. Make: KrishnaConchem or equivalent |
| 25 | Providing & fixing of Rebar in existing concrete surface by inserting reinforcemnet bar with Epoxy based suitable bonding compound of Hilti or equivalent make (HIT-RE-500 of Hilti or equivalent make) for interconnection of new R.C. structure with existing R.C. structure. Depth of drilled hole should be suitable to develop maximum recommended strength as per approved manufacturer\"s recommendation. This item includes supply of all materials including bonding chemicals, T&P required to execute the work, cost of all labour, transportation of chemical, staging to reach work place etc. all complete as directed by Engineer - in - Charge. Reinforcement bar shall be paid separately as applicable. The dia of rebar shall be 08-12 mm as per the site requirement. |
| 26 | Insertion of POWRTHROW sustained release Corrosion inhibiting caplets which shall protect both anodic & cathodic sites and reduce Corrosion potential Ecorr by minimum 80 mV in conductive medium, by drilling 25 mm holes into the concrete at a depth of 30mm and inserts to be filled by EPCO-PCPutty. Material Make: Krishna Conchem Or equivalent |
| 27 | Providing and fixing additional corrosion resistant steel Rebar Fe 415 or higher grade, with Anti corrosive treatment thereon in the form of Zinc rich Epoxy application (KrishnaConchem; Brand Name:- IPNet RB), as per requireddiameter in various structural elements like column, beams and Slab etc. to replace the lost rebar’s section due to corrosion, including cutting, bending and fixing the bar, tieing with preleft bars by G.I. binding wire, retouching local damages in coating, if any,of with Zinc spray, etc. complete. Steel Make: Tata/Jindal |
| 28 | (F) Concrete Section Build-up: |
| 29 | Rebuilding the section of damaged RCC elements beam/slab/column to its original size or as per Consultant’s recommendations in thicknesses from 25 to 40 mm in layers of 20 mm each by providing and applying with hand, single component shrinkage compensated prepacked thixotropic (PMM) mortar of grade M40 and above, including all lead lift, mixing by addition of water only as per manufacturer\"s recommendation, levelling the surface, curing etc. complete. (Rate shall be including- cube test to be conducted for every5 M.T. work done. 2 Nos. of sample required per test). Ensure the quality of water as per IS 456. Ensure temperature at time of mixing should be between 25 to 40 degree Celsius by electronic temperature gauge. |
| 30 | Rebuilding the section of damaged RCC elements beam/slab/column to its original size or as per Consultants’ recommendations in thicknesses of 40-70 mm by providing and casting with micro concrete of grade M50 and above including providing and fixing of watertight foam faced finish shuttering of minimum 18 mm thick. With supporting framework, all lead lift, mixing, placing, de-shuttering, levelling the surface by grinding off cementitious slurry or construction joint differences if any to satisfaction of Engineer-in-Charge, curing etc. complete. (Rate including- Cube test to be conducted for every 2 M.T. work done. 1 Nos. of sample required per test). Ensure the quality of water by testing water as per IS 456 and document the same. Ensure temperature at time of mixing should be between 25 to 40 degree Celsius by electronic temperature gauge. |
| 31 | (G) Plastering |
| 32 | Providing and applying average 12-15 mm thick plaster in one coat in cement mortar 1:4 for with ready mix prepacked proportioned dry mix mortar, blended with PP fibres, waterproofing additives, on Internal/external surfaces including transporting of material, mixing, curing, etc. complete. |
| 33 | (H) Painting |
| 34 | Providing and applying luxury emulsion paint with Teflon surface protector on internal wall surface including surface preparation by applying two coats of suitable wall primer, wall putty and two coats of paint by brush application etc. complete (Preferred makes: Asian paint and Berger.) |
| 35 | (I) Miscellaneous Work |
| 36 | Providing and fixing of new Gypsum False Ceiling suspended false ceiling consisting of 12.5 mm thick Gypsum plaster board suspended on G.I. framework with staggered joints. G.I. framework to consist of G.I. perimeter channels 0.55mm thick 20mm x 30mm along perimeter of false ceiling of ceiling, screw fixed to wall/partition with nylon sleeves and screws @ 600mm c/c. Suspending G.I. intermediate channels of size 0.9 mm thick 45 mm x 15 mm from the soffit at maximum distance 1220 mm c/c with ceiling angle 0.55 mm thick 25 mm x 10 mm fixed to soffit using proprietary supplied G.I. cleats and steel expansion fasteners. Ratequoted shall be inclusive of cost of providing support G.I. framework, T.W. Framework for receiving decorative light fixtures formed of perimeter channels for fixing light fixtures, AC grills/diffusers etc. Also, to provide concealed perimeter channel support as required to support modular grid ceiling sections at junction between Gyp board false ceiling and modular grid tile ceiling, complete as per directions & drawings of Architect. (3-4 feet height from ceiling bottom RCC slab). The rate shall be quoted according to the restoration of existing false ceiling design and moulding. |
| 37 | Re-fixing and termination of existing lights and fittings at false ceiling including all support from slab, fastener, screw, new cable supply laying and termination if required and other associated accessories etc., light details are given below: |
| 38 | 4 feet tube with fitting |
| 39 | 2 feet tube with fitting |
| 40 | Single tube 9 W with round fitting |
| 41 | Re-fixing of existing fire alarm detectors and its cabling at false ceiling both below false ceiling and above false ceiling including all clamp screw etc. |
| 42 | Providing and fixing of Concrete Penetrating Corrosion Inhibitor (CPCI) - EPCO KP100 at exposed surface of the Slab/Beam and Pillars of the building (Make: Krishna Conchem or equivalent). |
| 43 | Providing and fixing of Bonding new to old concrete EPIBOND21-LP at exposed surface of the Slab/Beam and Pillars of the building (Make: Krishna Conchem or equivalent). |
| 44 | (J) Buyback item |
| 45 | Taking out of all steel panels false ceiling G.I. framing, corroded steel rod including all the transportation charges. |
