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| 1 | Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer-in-charge. 1: 3: 6 or richer mix. |
| 2 | Centering & shuttering with plywood or steel sheets including strutting, propping bracing both ways with steel props and removal of formwork for upto floor five level for :Suspended floors, roofs, landings, staircases, balconies, girders, cantilevers, bands, coping bed plates, anchor blocks, sills, chhajjas, lintel, beam, plinth beam etc. |
| 3 | Providing and laying in position specified grade of cement concrete for RCC structural elements upto floor five level including curing, compaction, finishing with rendering in cement sand mortar 1:3 (1 cement: 3 coarse sand) and making good the joints and cost of plastizers (if required ) excluding the cost of centering, shuttering and reinforcement for Walls (any thickness) including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc.M20 grade Nominal Mix / Design Mix Providing M- 25 grade concrete by using cement as per codal provision instead of M-20 grade design mix. |
| 4 | Removing aluminium/Gypsum partitions, doors, windows, fixed glazing and false ceiling including disposal of unserviceable material and stacking of serviceable material with all lead as directed by Engineer-in-charge. (all lead) |
| 5 | Providing and fixing 12.5 mm thick tapered edge gypsum board conforming to IS 2095- Part I at all height false ceiling including providing and fixing of frame work made of special sections power pressed from M.S. sheet and galvanised in accordance with zinc coating of grade 350 as per IS : 277 and consisting of angle cleats of size 25mm wide x 1.6mm thick with flanges of 22mm and 37mm at 1200mm centre to centre one flange fixed to the ceiling with dash fastener 12.5mm diax40mm long with 6mm dia bolts to the angle hangers of 25x25x0.55mm of required length, and other end of angle hanger being fixed with nut and bolts to G.I. channels 45x15x0.9mm running at the rate of 1200mm centre to centre to which the ceiling section 0.5mm thick bottom wedge of 80mm with tapered flanges of 26mm each having clips of 10.5mm at 450mm centre to centre shall be fixed in a direction perpendicular to G.I. channel with connecting clips made out of 2.64mm diax230mm long |
| 6 | Providing and applying plaster of paris putty of 2 mm thickness over plastered surface to prepare the surface even and smooth complete |
| 7 | Wall painting with plastic emulsion paint of approved brand and manufacture to give an even shade including all scaffolding: Two or more coats on new work including prepartion of base with primer, putty, lippy etc complete in all respect. |
| 8 | Grading roof for water proofing treatment with water proffing compound Cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) |
| 9 | Providing gola 75x75 mm in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 stone aggregate 10mm and down gauge) including finishing with cement mortar 1:3 (1 cement : 3 fine sand) as per standard design. |
| 10 | Providing & laying broken glazed titles on roof ( broken glazed tiles not less than 9 Kg/Sqm) on top of hot bitumen @ 1.7 Kg/Sqm. (1.40 Kg of VG-40 (30/40 )grade and 0.30 Kg/Sqm. Of VG-10 (80/100) grade) and joints filled with cement mortar 1 :2 (1 cement:2 marble dust mixed with water proofing compund all complete as per direction of Engineer-in-charge. |
| 11 | Carriage of Building Rubbish with all lead and lift. The rates are inclusive of stacking, loading and unloading and transporatation etc. |
| 12 | Providing and fabricating reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding (including cost of binding wire) all complete up to floor five level. ('Original producers' who manufacture billet directly from iron ores and roll the bilets to produce steel conforming to IS:1786)Thermo-mechanically Treated bars (Conforming of relevent IS code) |
| 13 | Chipping of unsound/weak concrete material with plaster 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-Charge50 to 100 mm average thickness |
| 14 | Providing and applying Coat of Concrete Penetrating Corrosion Inhibitor of the approved makes Krishnaconchem/ Sika/ Fosroc or equivalent which works on Bipolar Inhibition Mechanisam on concrete surface to be applied by using brush or spray at dosage specified by the manufacturer. A second coat shall be applied if continuity is in doubt. |
| 15 | Rust Removal : Exposing and cleaning of existing Reinforcement in Columns, beams and slabs or any other RCC structural elements : - Cleaning of existing reinforcement carefully at all heights in columns , beams or slabs where cracks are observed.Applying of alkaline rust remover/converter primer of approved make Krishna conchem or equivalent on bars, including cleaning the reinforcement, wire brushing to remove loose rust spalls, with time interval of 6 hour between the coats etc. complete. The rates are inclusive of all materials, labor, machinery, equipment, tools, tackles, cuplock type Scaffolding etc. and disposal of debris into designated RHC dumping yards, all complete. (Surface area after deducting concrete cover will be measured for payment.) |
| 16 | RUST PASSIVATION:Providing and applying Two component, low solvent, zinc rich epoxy resin based Anticorrosive Treatment of reinforcements in two coats with time interval of minimum 4 hours between each coat of the approved makes ( Fosroc/ Sika / STP or equivalent). The application shall be done by brush or spray as per Manufactureres recommendation, complete. The rates are inclusive of all materials, labor, machinery, equipment, tools, tackles etc., all complete. Average consumption of Zinch rich primer shall be 200 g per Sqm minimum. Surface area after deducting cover will be measured for payment. then treat the steel with epoxy based zinc rich anti corrosive coating of approved Make over the steel rebarrs. The zinch rich primer shall be applied at 40 microns dry film thickness and shall have salt spray resistance of <5 mg for 96 hours as per ASTM B-117 and adhesive bond strength > 1.5 MPa as per ASTM D4541,etc,complete.(Surface area after deducting cover will be measured for payment.) |
| 17 | Providing and fixing chemical rebars shear connectors as per drawing and at all heights as per EIC. using epoxy grout made with Epoxy resin and Hardner. (Hilti or equivalent )For Jacketing of R.C.C. members as per specifications. The rate including scaffolding/ working platform/safety nets etc. which are required. Item includes Supplying, Drilling/Cleaning hole and injecting chemical. Application to be designed separately for Rebars as Simply Supported, Moment or Splice Connection as per EC2/TR 023 or relevant tested and accepted rebar guidelines. The chemical should have ETA approval for seismic rebar as a minimum qualifying criterion. Drilling hole with double flute type drill bits or hollow drill bits to the required depth by rotary hammer drill, cleaning with brush and jet of clean air, filling resin and hardener using serrated nozzle to eliminate mixing error with standard HDE A22 battery dispenser along with piston plug. The installation and the setting instructions should be strictly followed as per the manufacturer’s recommendations. The adequate diameter and embedment of rebars to be decided as per PROFIS / Designfix Rebar Software & the report to be submitted to the project manager/ design engineer for approval. Scanning before drilling to be done to avoid hitting existing rebars. Installation of chemical rebars shear connectors by using a static mixer provided which mixes in 3:1 ratio of resin to hardener and dispensing with the dispenser provided from Manufacturer and insertion of rebar into drilled hole by rotating in clockwise direction. |
| 18 | \\"Re 500 or equivalent -8mm dia 160mm depth |
| 19 | \\"Re 500 or equivalent -10 mm dia 200mm depth |
| 20 | \\"Re 500 or equivalent - -12 mm dia 240mm depth |
| 21 | \\"Re 500 or equivalent - -16 mm dia 320mm depth |
| 22 | Galvanic sacrificial Canodes for patch repairs by Point Canodes:Provide and install sacrificial zinc anodes of Make Fosroc / Krishna Conchem or equivalent to prevent initiation of corrosion of steel reinforcement in chloride-contaminated or carbonated concrete or new construction. Zinc mass should be Min. 60 g/unit or More and the zinc surface area and spacing of anodes should be selected/designed in a way to achieve the target service life of 25 or more Years. The quality of zinc should be in compliance with ASTM B418-95a, Type I, die-cast around steel tie-wires (in case of more than one tie wire they should be well seperated) and encased in a highly alkaline cementitious mortar (encapsulating mortar) with a pH of 14 or greater. The encapsulating mortar should not have sulphates, chlorides, bromides or any other elements corrosive to steel. The encapsulating mortar should have interconnected and fine pore structure to dissolve, transport and accommodate zinc corrosion products away from the zinc surface without causing additional stress to the cover concrete, and maintain a pH > 14 at the immediate vicinity of uncorroded zinc for the desired service life. Anode units shall be supplied with integral well-separated tie wires without splices (in case of more than one wire) and with loop ties for directly tying to the reinforcing steel. For patches in grid pattern or periphery of patches with 2 to 4 anodes/m2 (to be confirmed as per designed) area of concrete, the spacing can be 430 to 610 mm or as per manufacturer's specifications or designs. The anode size and shaping shall deliver a minimum current density to the steel adjacent to the repair of 0.4/0.8 mA/m2 (choose as per the chloride content) of steel surface area at the end of the design life based on the chloride level of <0.8% / 0.8-1.5% / >1.5% [choose as per the test results] by weight of cement taking into account an anode aging factor calculated from previous field installations and the in-service environment. Anodes should meet the target service life, which can be estimated using Galvanic Anode Performance (GAP) test developed at IIT Madras for severe exposure condition (high humid and high chloride conditions), GAP test results from IIT Madars/ Bombay shall be made availble by conntractor on his cost & no extra payment will paid for GAP test. |
| 23 | The Canodes shall be covered with Conductive bed-mortar of resistivity less than 50 kOhm-cm or similar to the parent concrete on the cleaned steel reinforcement as per manufacturers specification before applying passivation coating. All necessary design calculations for spacing of Canodes, installation training, installation confirmation, monitoring of set of anodes to confirm current from anodes as per ISO 12696 or as per the design, etc. shall be carried out by a NACE Certified CP Technician, CP2 or higher, complete at all heights and including of all materials, labour, tools, plants and machineries as directed by Engineer-in-charge and/or consultant.RATES INCLUDES Supply, installation, spacing calculation, designing, QAP, GAP test etc. Approved brand shall be from registered applicator. GAP Test should be performed on the cost of contractor. |
| 24 | Galvanic sacrificial Canodes for patch repairs by Point Canodes:Provide and install sacrificial zinc anodes of Make Fosroc / Krishna Conchem or equivalent to prevent initiation of corrosion of steel reinforcement in chloride-contaminated or carbonated concrete or new construction. Zinc mass should be Min. 115 g/unit or More and the zinc surface area and spacing of anodes should be selected/designed in a way to achieve the target service life of 25 or more Years. The quality of zinc should be in compliance with ASTM B418-95a, Type I, die-cast around steel tie-wires (in case of more than one tie wire they should be well seperated) and encased in a highly alkaline cementitious mortar (encapsulating mortar) with a pH of 14 or greater. The encapsulating mortar should not have sulphates, chlorides, bromides or any other elements corrosive to steel. The encapsulating mortar should have interconnected and fine pore structure to dissolve, transport and accommodate zinc corrosion products away from the zinc surface without causing additional stress to the cover concrete, and maintain a pH > 14 at the immediate vicinity of uncorroded zinc for the desired service life. Anode units shall be supplied with integral well-separated tie wires without splices (in case of more than one wire) and with loop ties for directly tying to the reinforcing steel. For patches in grid pattern or periphery of patches with 2 to 4 anodes/m2 (to be confirmed as per designed) area of concrete, the spacing can be 430 to 610 mm or as per manufacturer's specifications or designs. The anode size and shaping shall deliver a minimum current density to the steel adjacent to the repair of 0.4/0.8 mA/m2 (choose as per the chloride content) of steel surface area at the end of the design life based on the chloride level of <0.8% / 0.8-1.5% / >1.5% [choose as per the test results] by weight of cement taking into account an anode aging factor calculated from previous field installations and the in-service environment. Anodes should meet the target service life, which can be estimated using Galvanic Anode Performance (GAP) test developed at IIT Madras for severe exposure condition (high humid and high chloride conditions), GAP test results from IIT Madars/ Bombay shall be made availble by conntractor on his cost & no extra payment will paid for GAP test. |
| 25 | The Canodes shall be covered with Conductive bed-mortar of resistivity less than 50 kOhm-cm or similar to the parent concrete on the cleaned steel reinforcement as per manufacturers specification before applying passivation coating. All necessary design calculations for spacing of Canodes, installation training, installation confirmation, monitoring of set of anodes to confirm current from anodes as per ISO 12696 or as per the design, etc. shall be carried out by a NACE Certified CP Technician, CP2 or higher, complete at all heights and including of all materials, labour, tools, plants and machineries as directed by Engineer-in-charge and/or consultant.RATES INCLUDES Supply, installation, spacing calculation, designing, QAP, GAP test etc. Approved brand shall be from registered applicator. GAP Test should be performed on the cost of contractor. |
| 26 | Insertion of POWRTHROW of Make Krishna COnchem or equivalent, sustained release Corrosion inhibiting caplets which protect both anodic & cathodic sites and reduces Corrosion potential Ecorr by minimum 80 mV in conductive medium, by drilling 20 mm dia holes into the concrete at a depth of 30 mm at 500 mm c/c spacing using rotary hammer drill machine, cleaning the holes by air blowing and inserts to be filled by Putty of Make Krishna COnchem or equivalent. |
| 27 | Making of hole in R.C.C. slab/wall/beams and masonary wall (width up to 450 mm) by core cutting machine complete as per direction of EI, From diameter 50mm to 100mm all complete with T & P as per direction of EI. |
| 28 | A- Providing and applying 50/100/150 mm. micro concrete of Strength of Minimum M50 of Make FOSROC/SIKA/Pedilite or equivalent micro concrete or equivalent with bipolar concrete pentrating corrosion inhibiting admixture of Make FOSROC / SIKA or equivalent at the dosage of 100 Grams per 30 kg bag of microconcrete as per specification at all heights to R.C.C. walls, slabs, and column etc. including shuttering, centering, proping and cup lock type scaffolding required for micro concrete pin anchor bolt , anchor fastener, packing of Joints with putty including curing with curing compound etc. complete. Item includes providing, mixing and applying two Component Epoxy bonding adhesive of approved make Nitobond EP or SIKADUR 32 LP or equivalent having coverage as per manufacturer specification (The overlay time to be minimum 2 hrs, during summer) for bonding old concrete surface to new concrete/ mortar by mixing resin and hardener as per recommendation by manufacture and applying by brush on the surface. Providing and applying single component free flowing, non shrink cementitious microconrete used at water powder ratio of 0.16, having mixed density of 2100 - 2200 kg/m3 and unrestrained expansion of 1 to 4% as per ASTM C827. The microconcrete used shall achieve compressive strength of 50 Mpa at 28 days, Flexural Strength of 5 Mpa at 28, young's modulous of 25 kN/mm2 and shall be \\"Class A1\\" fire rating as per EN 1504 Cl 5.5, etc, complete.The microconcrete shall be free flow, Self compacting & should not require any vibratory compaction. The rates are inclusive of cup lock type scaffolding, shuttering with jack pipe prop system,all materials, labor, machinery, equipment, tools, tackles, etc., all complete. (Addition upto 20% of aggregate 10 mm down is permitted as per site condition.). (Payment under this item shall be made only after proper wet curing has been done and surface has been satisfactoriliy evaluated by sounding / tapping with a blund metal instrument.) |
| 29 | Repair and Strengthening of Slab and Beam by PMM i/c removing loose concrete.Cleaning the concrete with compressed air. Removal of loose concrete upto 20mm beyond reinfrocement and treating the exposed reinforcement with Alakaline rust converter (Make FOSROC/ SIKA or equivalent). and then treat the steel with two coats of epoxy based zinc rich anti corrosive coating (Make FOSROC/ SIKA or equivalent) over the steel rebarrs. The zinch rich primer shall be applied at 40 microns dry film thickness and shall have salt spray resistance of <5 mg for 96 hours as per ASTM B-117 and adhesive bond strength > 1.5 MPa as per ASTM D4541,etc,complete.Providing, mixing and applying two Component Epoxy bonding adhesive of approved make Nitobond EP or SIKADUR 32 LP or equivalent having coverage as per manufacturer specification (The overlay time to be minimum 2 hrs, during summer) for bonding old concrete surface to new concrete/ mortar by mixing resin and hardener as per recommendation by manufacture. The bonding agent shall be applied by brush & should remain in tacky state after application for a minimum period of 5-6 hrs at 20 deg C & 2-3 hrs at 30 deg C. The product shall achieve 50 N/mm2 compressive strength, 20 N/mm2 tensile strength, 35 N/mm2 flexural strength and 10 N/mm2 shear strength as per BS 6319 standards. The adhesive bond to the concrete substrate shall exceed the tensile strength of the host concrete,etc complete. Insertion of POWRTHROW of Make Krishna COnchem or equivalent, sustained release Corrosion inhibiting caplets which protect both anodic & cathodic sites and reduces Corrosion potential Ecorr by minimum 80 mV in conductive medium, by drilling 20 mm dia holes into the concrete at a depth of 30 mm at 500 mm c/c spacing using rotary hammer drill machine, cleaning the holes by air blowing and inserts to be filled by Putty of Make Krishna COnchem or equivalent. Providing and applying shrinkage-controlled, polymer modified, fibre reinforced cementitious repair mortar of Grade M55 Make FOSROC/ Sika or Equivalent on the prepared surface by wet spray application, or by hand/trowel where necessary, and curing with an approved curing compound. The material shall be a single component, pre-packed system, mixed with clean water at a water–powder ratio of approximately 0.18 (4.25–4.5 litres per 25 kg bag). The repair mortar shall exhibit drying shrinkage of less than 1000 microstrain as per ASTM C157-93, compressive strength greater than 55 MPa at 28 days as per BS 1881 Pt.116, flexural strength greater than 10 N/mm² at 28 days as per BS 6319 Pt.3, tensile strength greater than 3.5 N/mm² at 28 days as per BS 6319 Pt.7.The maximum thickness for each layer of PMM application shall be limited to 15 mm, bond coat should be applied before application of each layer and work to be done in multiple layers, with overhead applications up to 25-50 mm and vertical applications up to 50-60 mm, built in layers as required. The rate including cup lock type scaffolding/ working platform/safety nets / curing etc. which are required all complete. |
| 30 | Providing 230 GSM thick single layer Carbon fiber wrap of Make Fosroc/ Sika/ STP or equivalent for Slab, beams, columns with all height cup-lock saffolding after proper and adquate surface preparation by grinding on plane surface and rounding of edges in circular pattern in beams and columns, applcation of primer followed by epoxy putty layer upto 3 mm to level the surface, application of saturent with pesting of carbon fiber sheet. The FRP fabric used shall be of zero degree unidirectional fibers having fiber density of 1.8 g/cc and shall have tensile strength > 4900 MPa ; tensile modulous > 230 GPa and ultimate elongation of 2.1%. The substrate shall be primed with Nitowrap 30 or equivalent epoxy primer & Nitowrap 410 or equivalent impregnating resin saturant shall be used for saturating the fibers.Saturant used shall have tensile strength of >30 MPa; Elongation > 2% ; Flexural strength > 30 MPa ; Tensile Modulous > 2400 MPa & Flexural Modulous > 1700 MPa when tested as per ASTM D638 Type I and ASTM D 790 & Glass Transition Temperature > 50 deg Celcius as per ASTM E 1356.The adhesion of the entire system(FRP Sheet, Saturant and primer combined) with concrete shall be > 3.5 MPa with concrete failure as per ASTM D 4541. Wrapping the CFRP fabric to RCC member at desired orientation using tamping rollers to avoid any air voids etc. and after application of fibre wrapping, Quartz sand sprinkling to be done on the surface for bonding as per direction and satisfaction of Engineer-in-charge, etc, complete . Overlaping of two adjecent sheet shall be minimum 100 mm on either sides. Strip Grid design & wrapping method of fibre wrapping to be vetted from IIT with methodology. |
| 31 | Providing and fixing Carbon Fibre shear Anchors (Make Fosroc/Sika/STP or equivalent in CFRP works of 10 mm dia and 100 mm long (Including the covering of Anchors face by 100 x 100 mm piece of CFRP sheet pasting with saturant) of High strength hybrid woven fibre carbon fabric mesh with filling of hole with Epoxy Saturant or Equivalent, removing/ drawing out of the entrapped air etc. from the drilled hole all complete as per manufacturer's specifications and direction of Engineer in- charge. |
| 32 | Protection on repaired areas by aliphatic anti-carbonation coatings: Providing and applying Elastomeric, Anti carbonation, Anti corrosive, UV resistant, Solvent based Pure Aliphatic Acrylate System- MONOPOL 456 /Krishna chonchem, Dekguard S or equivalent on the concrete achieving dry film thickness of minimum 200 microns in a primer coat followed by two top coats using brush or spray after complete cleaning & removal of oil, grease or loose particles from the surface. The system shall provide long-term protection against carbon dioxide, chloride ions, sulphates, oxygen, water, and UV radiation, while allowing water vapour to escape from the structure.Material should have properties of Tensile strength (ASTM D638): > 2.5 N/mm² ,Elongation (ASTM D638): > 4% & Adhesive bond strength to concrete (ASTM D4541): > 2.5 N/mm². |
| 33 | Providing and injecting low viscosity Solvent free Epoxy grout of Make FOSROC / SIKA/ Mapei & equivalent in the ratio of resin and hardener by grouting pump at a pressure @ 3- 6 Kg/cm2 or as instructed by EIC etc complete. After grouting is completed after 24 hours, cut the nipples and seal it with polymer-modified mortor of Make FOSROC / SIKA / Mapei& equivalentas per specifications given above.Epoxy Grout should be a low viscous solvent-free two-component epoxy resin with a density of 1050 kg/m³. Ensure the epoxy resin has viscosity < 0.6 poise (ASTM D1200), compressive strength > 70 MPa (ASTM D 695), and bond strength > 10 MPa (ASTM C882). Mixing of epoxy resin components in required quantities should be as per manufacturer's instructions. Fill the grouting gun with epoxy resin and maintain desired pressure. Grout the material through prefixed nozzles in structural elements until refusal. Complete the operation within the pot life of the material.Approximate No. of NRV with MS packers Nozzles. Considering 600 x 600 mm grid at honeycomb area and 150 mm c/c along the crack.(depth of drilling should be 200 mm). The rate including scaffolding/ working platform/safety nets etc. which are required/Alcofine microfine cement, cost of drilling and NRV Nozzle Nipples. |
| 34 | Providing and injecting Cement grout of Make Fosroc/SIKA or equivalent with Microfine cement in the ratio as per specifications with grouting pump at a pressure @ 2 to 4 Kg/cm2 or as instructed by EIC etc complete. After grouting is completed after 24 hours, cut the nipples and seal it with Make Fosroc/ SIKA or & equivalent as per specifications given above. Cemnt grout should have plasticised expanding grout admixture Cebex 100 or equivalent having Chloride content: Nil as per BS:5075, typical unrestrained expansion of upto 4% in general. Grouting to be done till the nozzle refuses to accept the grout.Approximate No. of Nozzles Considering 600 x 600 mm grid on RCC members and 150 mm C/C along the crack. Insert 12 mm dia, 100-175 mm long PVC or equivalent injection packers in cleaned holes with fast setting mortar like Renderoc Plug or equivalent. Cut the packers by cut of wheel after completion of grouting without damaging structural elements. The rate including scaffolding/ working platform/safety nets etc. which are required/Alcofine microfine cement, cost of drilling and Nipples etc all complete. Payment shall be made on acutal quantity of microfine cement consumed. |
| 35 | Labour charge for refixing of Acoustic Ceiling Tiles including ceiling section members all complete as per direction of Engineer Incharge. |
| 36 | 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 there after .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. Please Enable Macros to View BoQ information |
