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| 1 | KODUMBU CAUSEWAY REHABILITATION |
| 2 | OD122538/2024-2025:Removing damaged concrete:Loose and delaminated concrete shall be identified and marked before proceeding with theremoval. The loose cover concrete including the loose damaged concrete shall be removed uptobeyond the corroded bars to a minimum depth of 10 mm behind the reinforcement. Onlyaffected concrete shall be removed and conducting proper investigation, (Good & soundconcrete should not be chipped / damaged) by chipping / hacking with chisel and hammer or bymechanical means like light weight chisel hammer, pneumatic chippers, making saw cut atperiphery to avoid feather edge for all height and removal and disposal of debris at designatedlocation including all material, labour, tools, temporary supports for structures, electricity, plantand machineries etc. complete as directed by Engineer-in-charge and/or Consultant. Depth ofchipping may vary from 20 to 100 mm. |
| 3 | OD122537/2024-2025:Rust remover/Rust Convertor:Cleaning of rust / scales / corrosion from reinforcement bars should be carried out using acid based rust remover, Reebakleens RR of Fosroc or equivalent, or using alkali based rustconverters such as Feovert of Krishna Conchem. The material is to be applied to the rustedmetal bar, using brush and leaving it to dry for 30 Min. & washing surface with fresh water asrequired to exposed reinforcement bar at all heights, including all material, labour, tools,temporary supports for structures, electricity, plant and machineries complete as per detailspecification and as directed by Engineer-in-charge and/or Consultant. The concrete surfacearea containing the cleaned rebars shall be measured for payment. |
| 4 | OD122536/2024-2025:Anti Corrosive treatment to Steel:Providing & applying inhibition coats/system to exposed reinforcement bars & also new bars,after cleaning & removing scales and rust completely as specified in 1.4, Two componentinhibitor Nitozinc Primer std. of Fosroc or MasterEmaco P130 of BASF or equivalent havingspecific gravity of 1.75 and solid content 57(+/-3) Adhesive bond strength > 1.5 N/mm2, 40microns DFT per coat as approved by Engineer-in-charge and/or Consultant shall be used asper manufacturer?s specification in two coats at all heights, including all material, labour, tools,temporary supports for structures, electricity, plant and machineries, necessary surfacepreparation and necessary protection after and during work. The concrete surface areacontianing the rebars where the treatment is carried out shall be considered for measurement |
| 5 | OD122535/2024-2025:New/Additional steel Reinforcement: Supplying, cutting, fabricating new reinforcement Fe500 for Jacketing, and providing additionalsteel reinforcement to compensate corroded reinforcement in existing member etc. and fixingwith old existing reinforcement which was reduced to 15 % or more of its original diameter asrequired as provided in original structure and additional steels as directed by EIC and/ orconsultant as required tying with 16 gauge annealed binding wire complete as per drawing andspecifications for all heights including all material, labour, tools, temporary supports forstructures, electricity, plant and machineries, curing etc. complete as directed by Engineer-incharge and/or consultant (TMT BARS of various size as required) |
| 6 | OD122534/2024-2025:Anchoring mainsteel and stirrups: Drilling holes of min 4mm larger than new rebar diameter into existing concrete substrate for anchoring of new rebar and depth of Min. 10 times the diameter of rebar and fixing with anchor resin grout Lokfix E (35/55/75) series or Lokfix P or Emfix or chemical anchor material or Masterflow 935 of BASF or equivalent as per NF P 18-831 and NF P 18-836 includingcleaning, cutting, fabricating, chemicals, material, labour, tools, temporary supports forstructures, electricity, plant and machineries etc. complete as directed by Engineer-in-chargeand/or consultant for all heights |
| 7 | OD122533/2024-2025:Anchoring Steel & Shear Connectors:Drilling holes into existing concrete structure for anchoring of new rebar with 10 mm dia. shearconnectors at 0.5 Mt. c/c (or as per design recommendation) and fixing with anchor resin groutLokfix P / Lokfix E 75/55/35 series or Emfix or pure epoxy resin based cartridge form chemicalanchor material or Masterflow 935 of BASF or equivalent as per NF P 18-831 and NF P 18-836. Drilling hole for diameter: 14 mm, Drilling hole for depth: 100 mm including cleaning,cutting, fabricating, chemicals, material, labour, tools, temporary supports for structures,electricity, plant and machineries etc. complete as directed by Engineer-in-charge and/orconsultant for all heights |
| 8 | OD122532/2024-2025:Epoxy Injection Grouting:Providing and executing injection/pressure grouting in cracks in the parent concrete by fixingPVC perforated nozzles at 150 mm to 200 mm distance or specified distances as per design anddetailed specifications. Pressure grouting using low viscous epoxy grout Conbextra EP10M ofFosroc or Masterinject 1315 of BASF or Shaligroput EI or equivalent having mix density 1050kg/m3, Compressive Strength (ASTM D695)->50 N/mm2,Tensile Strength (ASTM C 304-97)-18 N/mm2, Flexural strength(BS 6319 Part 4)-45 N/mm2 Pressure grouting shall be done atrequired pressure at all heights, including all material, labour, tools, temporary supports forstructures, plant and machineries, curing etc. complete as directed by Engineer-in-chargeand/or consultant. |
| 9 | OD122531/2024-2025:Galvanic Sacrificial Prevention of steel by Point anodes:Providing and fixing sacrificial zinc anode to prevent initialization of corrosion ofreinforcement in adjoining sound concrete due to chloride ingress by installing anodes fromVECTOR Galvashield XPI or equivalent for patches at Min. 2 to 4 anodes / Sq.mt. area ofconcrete (spacing of 300 to 700mm), as per manufacturer specification, covered with mortarwith of resistivity less than of parent concrete on the cleaned reinforcement steel includingdesign from manufacturer, installation of Monitoring Box to measure current thrown by Anodeas per IS 12696 in range of 0.2 to 2mA/ sq.mt as per manufacturers specification beforeapplying passivation coating at all heights and including of all material, labour, tools, temporarysupports for structures, plant and machineries, etc. complete as directed by Engineer-in-chargeand/or consultant.( for slabs) |
| 10 | OD122530/2024-2025:Polymer Modified Mortar (Pre-Packed):Providing and Applying single component, high strength, fibre reinforced, thixotropiccementitious patch repair mortar that achieves compressive strength minimum of 15 MPa at 1day and 45 MPa at 28 days and capable of applying upto 50mm thick in single layer such asRenderoc SP40 of Fosroc or Master Emaco S 348 of BASF or equivalent, to the preparedconcrete area for thickness up to 50mm, after applying epoxy resin based bonding coat as permanufacturer?s specification, before the bonding agent becomes tack free, initially by handand finally finishing the same with trowel carefully compacting the same around the rebar andfinishing to bring it in line with existing concrete surface on the columns, slabs, beam etc. at allheights, where the thickness of application is less than 50 mm in patches as per specification .Item rate is inclusive of all material including the bond coat, labour, tools, temporary supportsfor structures, electricity, plant and machineries, curing etc. complete and as directed byEngineer-in-charge and/or consultant.(Payment to be made in Sq.M for thickness upto 50mm of PMM for patch area repaired) |
| 11 | OD122529/2024-2025:Microconcrete Reinstatement for thickness more than 50mm for RCC members:-Providing and laying of special repair material micro-concrete for reinstatement of membershaving thickness of repair more than 50mm and jacketing, using Single component, highstrength, high flow cementitious micro-concrete having compressive strength minimum of M40at 28 days such as MasterEmaco 346 or Renderoc RGL / RGS of Fosroc or equivalent, blendedwith washed saturated surface-dry (SSD), graded, low absorption, high density, aggregates ofsize 3mm to 10mm at 50% by weight of micro concrete (if thickness is 100mm or more) andwater as per data sheet and pouring into the shuttering if required than use birds beak type formwork using suitable arrangement or if required using pumping device for uniform flow ofMicroconcrete. The side shuttering can be removed after Minimum of 24 hours, preferably 3days and the bottom shuttering after 7 days ensuring proper bond between the micro concreteand existing concrete substrate at all heights, including all material, labour, tools, temporarysupports for structures, electricity, plant and machineries, curing etc. complete as directed byEngineer-in-charge and/or consultant. (Payment shall be made in Sq.M for thickness upto100mm of Microconcrete of area repaired, ) including |
| 12 | 12.8.2.C:Plain/Reinforced Cement Concrete in Open Foundation complete as per Drawing and Technical Specifications <br> RCC Grade M20 - With Batching Plant, Transit Mixer and Concrete Pump - ( Without formwork) <br> |
| 13 | OD122528/2024-2025:Providing and fixing double scaffoldingsystem(cup lock type)on the exterior side,upto sevenstory height made with 40mm dia M.S tube |
| 14 | 13.3:Plastering with cement mortar (1:3 ) on brick work in sub-structure as per Technical Specifications |
| 15 | APPENDIX -B |
| 16 | 8.4.12:Providing and fixing of retro- reflectorised cautionary, mandatory and informatory sign with 7years warranty manufactured as per IRC :67 made of Type IV micro prismatic grade sheeting fixed over aluminum sheeting, 2 mm thick/aluminum composite material sheeting 4 mm thick with suitable back supporting frame of MS angle 25x25x3 and supported on GI pipe pole 50mm NB confirming to IS 1239 firmly fixed to the ground by means of properly designed foundation with M 15 grade cement concrete min size 45 cm x 45 cm x 60 cm, 60 cm below ground level including painting all exposed surface with 2 coats of epoxy painting over epoxy primer and as per approved drawing and clause 801 including lettering symbols etc. 50cmx 60 cm rectangular (Single chevron etc.) |
| 17 | 3.1:Excavation for roadway in soil using manual means including loading in truck for carrying of cut earth to embankment site with all lifts and lead upto1000 metres. |
| 18 | 12.4:Plain cement concrete 1:3:6 nominal mix in foundation with crushed stone aggregate 40 mm nominal size mechanically mixed, placed in foundation and compacted by vibration including curing for 14 days. |
| 19 | 12.8.1.C:Plain/Reinforced Cement Concrete in Open Foundation complete as per Drawing and Technical Specifications <br> RCC Grade M20 - Using Concrete Mixer - (Without formwork) <br> |
| 20 | OD337824/2025-2026:Engaging man Mazdoor (Coolie) for clearing and removing all the debris from the periphery ofsite |
| 21 | 55.26a:Providing and applying elastic, elastomeric membrane forming system with anticarbonation and breathing properties. The system should be based on solvent free acrylic polymers with selected mineral fillers and should be ultra-violet resistant, crack bridging type, carbonation resistant, breathable, enviornment friendly, water proofing coating. For anticarbonation, equivalent air layer thickness denoted as R or SD CO2 grater than 50 m and for breathability equivalent air layer thickness denoted as SD H2O shall be less than 4 m for vapour transmitting barrier. The system consists of one coat primer @ 75- 100 g/m2. The consumption of main polymer coating to give film thickness of 200-225 microns (Solid contents- 70%+ -3%) should be approximately. 400-450 g/m2 per two coats depending upon the method of application (either by roller or brush) and surface smoothness of the concrete. The total dry film thickness of the coating system should be minimum 200 microns for the above system. Polymer coating should be in suitable approved shades, including cost of materials, cleaning, chipping and removing the dirt particles of the concrete slab with wire brush and water,labour charges for filling the bug holes, cracks, joints etc with one component polymer modified fine repair and cosmetic mortar, labour for applying the above coating, scaffolding charges,etc. complete as per IRC SP:80 Clause 6.5.1 and Clause 2808 in the Specifications Book for Roads & Bridges published by the Ministry during April 2013. |
| 22 | 8.8:Painting two coats after filling the surface with synthetic enamel paint in all shades on new plastered concrete surfaces |
| 23 | 16.18:Replacement of Damaged Concrete Railing. |
| 24 | 16.22:Repair of RCC Railing : Carrying out repair of RCC m30 railing to bring it to the original shape. |
| 25 | 14.6:Construction of precast RCC railing of M30 Grade, aggregate size not exceeding 12 mm, true to line and grade, tolerance of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequate space between vertical post for expansion, complete as per approved drawings and technical specifications. Please Enable Macros to View BoQ information |
