Retrofitting of 760 LIG flats allotted under Housing Scheme 2010 at Pocket-III, Sector-14, Dwarka.

Providing and fixing double scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40 mm dia M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps and M.S. staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and approval of Engineer-in-charge. The elevational area of the scaffolding shall be measured for payment purpose. The payment will be made once irrespective of duration of scaffolding. Note: - This item to be used for maintenance work judicially, necessary deduction for scaffolding in the existing item to be done.

Erection (fixing) and dismantling of double scaffolding system (cup lock type) on the exterior side, up to seven storey height with essential safety features for the workmen etc. completed at the required location as per site condition and directions of Engineer-in-charge. The elevational area of the scaffolding shall be measured for payment purpose. Note:- (1) The elevational area of the scaffolding shall be measured for payment purpose. (2) The payment will be made once irrespective of duration of scaffolding.

Chipping of 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 and lifts all complete as per direction of Engineer-In-Charge. 25 mm average thickness

Chipping of 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 and lifts all complete as per direction of Engineer-In-Charge. 50 mm average thickness

Dismantling of old plaster or skirting, raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 m lead.

Cleaning of reinforcement from rust from the reinforcing bars to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24 hours of its application with wire brush and thoroughly washing with water and allowing it to dry, all complete as per direction of Engineer-In-Charge. Bars upto 12 mm diameter

Cleaning of reinforcement from rust from the reinforcing bars to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24 hours of its application with wire brush and thoroughly washing with water and allowing it to dry, all complete as per direction of Engineer-In-Charge. Bars above 12 mm diameter

Anticorrosive treatment to exposed reinforcing bars using Zn rich epoxy phenolic material with zinc content not less than 80%, of approved anticorrosive product at coverage rate as specified by approved manufacturer all complete as per direction of Engineer-In-Charge. Bars upto 12 mm diameter

Anticorrosive treatment to exposed reinforcing bars using Zn rich epoxy phenolic material with zinc content not less than 80%, of approved anticorrosive productat coverage rate as specified by approved manufacturer all complete as per direction of Engineer-In-Charge. Bars above 12 mm diameter

Providing and applying Concrete Penetrating Corrosion Inhibitor “CPCI” of brand approved by EIC, having pH not less than 9.5, over the entire surface at coverage rate as specified by the approved manufacturer, all complete as per direction of Engineer-In-Charge.

Steel reinforcement for R.C.C. repair work including straightening, cutting, bending, placing in position and binding all complete above plinth level. Thermo-Mechanically Treated bars of grade Fe-500 D or more.

Providing and fixing of L shaped 150mm long, 10mm diameter mild steel shear key after drilling suitable holes in reinforced or plain cement concrete with power driven drill machine to a minimum depth of 100mm up to 200mm in RCC beams, lintels, columns and slabs to introduce steel bars including fixing the steel bars in position using epoxy resin anchor grout of approved make but excluding the cost of reinforcement, all complete as per direction of Engineer-In-Charge.

V-Cutting of the crack shall be done of size 10 mm x 10 mm cutting. The sealing would be done with epoxy repair mortar approved by and as per direction of Engineer-In-Charge.

Providing and inserting 12 mm dia galvanized steel injection nipple in honey comb area and along crack line including drilling of holes of required diameter (20 mm to 30 mm) up to depth from 30 mm to 80 mm at required spacing and making the hole & crack dust free by blowing compressed air, sealing the distance between injection nipple with adhesive chemical of approved make and allow it to cure complete as per direction of Engineer In-Charge.

Providing and injecting approved grout in proportion recommended by the manufacturer into cracks/honey-comb area of concrete/ masonry by suitable gun/pump at required pressure including cutting of nipples after curing etc. complete as per directions of Engineer-in- Charge. (The payment shall be made on the basis of actual weight of approved grout injected). Epoxy injection grout in concrete/RCC work of approved make.

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge. In cement mortar.

Brick work with common burnt clay F.P.S. (non-modular) bricks of class designation 7.5 in superstructure above plinth level up to floor V level in all shapes and sizes in : Cement mortar 1:6 (1 cement : 6 coarse sand)

12 mm cement plaster of mix:1:6 (1 cement: 6 coarse sand).

Extra for plastering exterior walls of height more than 10 m from ground level for every additional height of 3 m or part thereof.

Repairs to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sqm and under, including cutting the patch in proper shape, raking out joints and preparing and plastering the surface of the walls complete, including disposal of rubbish to the dumping ground, all complete as per direction of Engineer-in-Charge. With cement mortar 1:4 (1 cement : 4 coarse sand).

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade : One or more coats on old work.

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and direction of Engineer-In-charge complete in allrespect. Epoxy bonding adhesive having coverage 2.20 sqm/kg of approved make.

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and direction of Engineer-In-charge complete in all respect. SBR Polymer (@10% of cement weight) modified cementitious bond coat @2.2 kg cement per sqm of surface area mixed with specified proportion of approved polymer.

Providing, mixing and applying SBR polymer (of approved make @ minimum 2% by wt. of cement used) modified plain/reinforced cement concrete for structural members having minimum characteristic compressive strength [with ordinary portland cement, coarse sand and Graded stone aggregate of 10 mm maximum size in proportion as per design criteria] with specified average thickness. Note: Rates shall be for finished surface area of concrete and shall include the cost of labour, concrete and appropriate approved Super-Plasticiser for rendering concrete as flowable and SBR polymer but shall exclude cost of reinforcement, bond coat, Shear Keys, centering and shuttering, strutting, propping etc (Payment under this item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by sounding/tapping with a blunt metal instrument) 50 mm thick in Grade M25 with cement content not less than 330 kg per cum.

Providing and laying Micro-concrete cement based pre-packed single component, chloride free, sulphate free, non-shrink, free flow, self-compacting, ready to use after mixing water in specified proportion of approved quality. Rate shall be included with new plywood shuttering board cost and supporting jack system/prop to support the shuttering plate. Shuttering plate will be used in patch repair job so shuttering item will be included in this application of High strength, dual-shrinkage compensated, micro-concrete for placing in nominal thickness of 25mm to 200mm for concrete repair with Compressive strength of micro concrete cubes equivalent to that of M25 grade at 28 days age.

Strengthening structural elements with Double layer of non-metallic composite fiber wrapping system comprise of two layers of uni-directional E -glass fiber wrap (900 GSM) and compatible epoxy saturant, by wet layup system including, Surface preparation: Grinding/ moulding concrete substrate, cleaning it with wire brush removing oil, laitance if present, rounding sharp edges to min 25 mm radius etc. complete. Profiling: Applying compatible primer on prepared substrate, Filling the holes and uneven surface with thixotropic putty etc. complete Wrapping: Wrapping the fiber sheet to structural element at desired orientation using tamping roller to avoid any air voids etc. repeat the same procedure for multiple layer with the interval of 8 hrs. Sand pasting: Applying second coat of saturant after min. 12 hrs, rectify air voids if any paste the river sand on it to make surface rough to take further finishes and plastering the surface after complete curing using 10 mm thick PMM (PMM to be paid extra), to give uniform finish. All complete as per direction of Engineer-In-Charge.

Regrading terracing of mud phaska covered with tiles or brick, in cement mortar by dismantling tiles or bricks, removing mud plaster, preparing the surface of mud phaska to proper slope, relaying mud plaster gobri leaping and tiles or bricks, grouted in cement mortar 1:3 (1 cement : 3 fine sand), including replacing unserviceable tiles or bricks with new ones and disposal of unserviceable material to the dumping ground (the cost of the new tiles or brick excluded), all complete as per direction of Engineer-in Charge.

Providing the New tiles for the execution of terracing of mud phaska or as per the direction of Engineer-in-charge.

Providing gola 75x75 mm in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 stone aggregate 10 mm and down gauge), including finishing with cement mortar 1:3 (1 cement : 3 fine sand) as per standard design : In 75x75 mm deep chase.

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge.

Deduct for taking away the unserviceable steel bars (scrap) received from dismantling of RCC work.

Providing and fixing factory made Fiberglass Reinforced plastics (F.R.P.) chajja 4 mm thick of required colour, size and design made by Resin Transfer Moulding (RTM) Machine Technology, resulting in void free compact laminate in single piece, having smooth gradual slope curvature for easy drainage of water and duly reinforced by 2nos vertically and 1nos horizontally 50x2 mm thick M.S. flat with 12 mm in built hole for grouting on the existing wall along with the 50 mm flanges duly inserted and sealed in the wall complete in one single piece casted monolithically, including all necessary fittings . The FRP Chajja should be manufactured using unsaturated Polyester resin as per IS: 6746, duly reinforced with fibre glass chopped strand mat (CSM) as per IS: 11551 complete with protective Gel coat U/V coating on Top for complete resistance from the extreme of temperature, weather & sunlight. (Only plan area of chajjas shall be measured for making payment).

Providing, erecting, maintaining and removing temporary protective screens made out of specified fabric with all necessary fixing arrangement to ensure that it remains in position for the work duration as required by the Engineer-in-charge. Wooven PVC cloth

Erecting, maintaining and removing temporary protective screens made out of specified fabric with all necessary fixing arrangement to ensure that it remains in position for the work duration as required by the Engineer-in-charge. Wooven PVC cloth

Finishing walls with water proofing cement paint of required shade : Old work (one or more coats @ 2.20 kg/10 sqm) complete.

Finishing walls with water proofing cement paint of required shade : New work (Two or more coats applied @ 3.84 kg/10 sqm).

White washing with lime to give an even shade : Old work (two or more coats)

White washing with lime to give an even shade : New work (three or more coats)

Providing & erecting steel props to support the structure provisionally during repair and jacketing etc. complete.

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor etc., up to floor five level, excluding the cost of centering, shuttering and finishing: (a)1:2:4 (1 Cement : 2 coarse sand (zone-Ill) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Agency/contractor is required to conduct all essential tests before the execution of work in orders to assess the current structural health of the existing structure and all essential tests after the execution of this retrofitting work in order to ascertain the strength and stability of the structure and will also prepare the detailed report on the test procedure, result and interpretation of results and recommending remedial measure based on the test results before the execution of work. All the remedial measures/detailed procedure reports are to be vetted from any premier govt. institute or any other govt. Engineering colleges as per the direction of Engineer-in-charge. List of Tests:- 1. Chemical tests 2. Corrosion tests 3. pH Test 4. Core Cutting tests 5. Rebound Hammer Test 6. Ultra Sonic Pulse Velocity Test 7. Carbonation Test 8. Half Cell Potential Test 9. Rebar Locator Test 10. Test for Surface resistivity of concrete to assess rate of corrosion 11. Any other Requisite Test as per direction of Engineer-in-charge.

Shifting of existing water tank to nearby roof slab/ mumty slab along with fixing of fittings & pipes and then refixing of the water tank at its original place after/ recasting of the roof slab/ platform complete.

Repainting sand cast iron/ centrifugally cast iron (spun) iron, soil, waste, vent pipes and fittings with one coat of synthetic enamel paint of any colour such as chocolate, grey or buff etc :100 mm diameter pipe

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Total after GST multiplying correction factor @0.973= 103,884,482.00

Add 3% cost index

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