Tender For Repairing Works Of Overhead Tank - 2025 - DOUBLE SCAFFOLDING SYSTEM 2 Providing and fixing double scaffolding system (cup lock type) on the interior and exterior side, upto the top height of overhead water tank with handrails at top, 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 location with essential safety features for the workmen etc. complete as per directions and approval of Engineer- in Charge. The whole scaffoldings erected for the entire repair work of water tank (interior and exterior side) shall be measured in Lumpsum for payment purpose. The payment will be made once irrespective of duration of scaffolding. Note:- This item to be used for maintenance work. 3 CHIPPING OF CONCRETE 4 Chipping of concrete material from slabs, beams, columns side walls etc. with manualChisel and/ or by standard power driven percussion type or of approved makeincluding tapering of all edges, making square shoulders of cavities includingcleaning the exposed concrete surface and reinforcement with wire brushes etc. anddisposal of debris for all lead and lifts, all complete as per direction of Engineer-InCharge. 50mm average thickness 5 DEMOLISHING OF RCC 6 Demolishing R.C.C. work manually / by mechanical means including stacking ofsteel bars and disposal of unserviceable material with in 50 metres lead as perdirection of Engineer -in-Charge. 7 CHIPPING OLD WEAK PLASTERING 8 Dismantling old/weak plaster over masonry or skirting, raking out joints and cleaningthe surface for plaster including scaffolding upto 8mtr height,tools and takles anddisposal of rubbish to the dumping ground within 1kms lead,at all heights 9 FIXING NIPPLES 10 Providing and fixing nipples with approved fixing compound suchasRenderoc<br>Plug/Master seal 505/Cera Plug of make M/sFosroc/BASF/Cera Chem respectively after drillingholes for<br>grouting as perTechnical Specifications including subsequent cutting/removal and sealing ofthe holeas<br>necessary of nipples after completion of grouting with Cement includingall scaffolding 11 INJECTING CEMENT SLURRY MIXED WITH APPROVED CHEMICALS 12 Providing and injecting approved grout in proportion recommended by themanufacturer into cracks/honey-comb area of concrete/masonry by suitable gun/pumpat required pressure including cutting of nipples after curing etc. complete as perdirections of Engineer-in-Charge. (The payment shall be made on the basis of actualweight of approved grout injected.) Stirrer mixed approved chemical such as cebex100/Flowcable 50/Cera Expan 250 of make M/s Fosroc/BASF/Cera Chemrespectively @ recommended proportion of weight of cement used) modified Cementslurry made with non-shrink compound inconcrete/RCC work including scaffoldings upto a height 5 mtr. (Excluding cost ofCement) 13 FIXING NIPPLES FOR INJECTING EPOXY GROUT 14 Providing and fixing 12mm dia galvanised steel injection nipple in honey comb areaand along crack line including drilling of holes of required diametre (20mm to 30mm)up to depth from 30mm to 80mm at required spacing and making the hole & crackdust free by blowing compressed air, sealing the distance between injection nipplewith adhesive chemical of approved make and allow it to cure complete as perdirection of Engineer-In-Charge including scaffolding upto height of 4 mtr. 15 INJECTING EPOXY GROUT 16 Providing and injecting approved grout such as Conbextra EP 10 of M/sFosroc/Concresive 1315 of M/s BASF or equivalent product of M/s CeraChem/BOSTIK approved by the company in proportion recommended by themanufacturer into cracks/honey-comb area of concrete/masonry by suitable gun/pumpat required pressure including cutting of nipples after curing etc. complete as perdirections of Engineer-in-Charge including scaffolding upto 4m height.(The paymentshall be made on the basis of actual weight of approved grout injected.) Epoxyinjection grout in concrete/RCC work of approved make 17 DRILLING HOLES 18 Drilling suitable holes in reinforced or plain cement concrete with power driven drillmachine to a minimum depth of 100mm upto 200mm in RCC beams, lintels, columnsand slabs to introduce steel bars for sunshades/balconies including fixing the steelbars in position using epoxy resin anchor grout of approved make includingscaffolding upto 4 m height but excluding the cost of reinforcement, all complete asper direction of Engineer-In-Charge.Upto and including 12mm dia 19 STEEL REINFORCEMENT 20 Steel reinforcement for R.C.C work including straightening, cutting, bending, placingin position and binding all complete upto plinth levelThermo - Mechanically Treatedbars of grade Fe-500D or more 21 APPLYING NITOZINC PRIMER 22 Providing and applying anti corrosive Nitozinc primer/Cera cte SP CI/ protectosilCIT, two or more coats, over the steel reinforcement as per the manufacturesspecification including scaffolding upto height 4 mtr and as directed by Engineer-incharge. The product shall be applied on the reinforcement surface after throughlycleaning. painted area of steel shall be considered for payment 23 FIXING MESH 24 Supplying and Fixing 16 gauge SS welded mesh having size 20x20 mm or nearest size firmly to columns and beams with concrete nails and plate washers atadequate spacing tocover the concrete surface prior to micro concreting at all levels as per the instructionof engineer in charge,including all cost of materials, scaffolding upto height 5 mtr, conveyance, labour etc.complete.Details of cost for 10.00 sqm 25 EPOXY BONDING AGENT 26 Providing, mixing and applying bonding coat of approved adhesive onchipped<br>portion of RCC as per specifications and direction of Engineer-Incharge<br>complete in allrespect.<br>Epoxy bonding adhesive having coverage 2.20 sqm/kg of approvedmakeDetails of Cost for 2.20 Sqm 27 CENTERING AND SHUTTERING FOR WATER TANK REPAIR 28 Centering and shuttering including strutting, etc. and removal of form for:Suspendedfloors, roofs, landings, balconies and access platform 29 MICROCONCRETE UP TO 5cm THICK 30 Providing and applying micro concrete over the chipped and cleaned exposedareahaving sufficient thickness (average 50mm) to receive the same with fluid microconcrete product, suchas Renderoc RG/MasterEmaco S 346/Cera microconcrete of M/s Fosroc/BASF/CeraChem or Similarrespectively, with potable water, mixing by heavy duty slow speed electricallyoperated stirrer after pouringthe water in a mixing vessel, mixed material shall be poured through the feed hopperinto well positionedform work for the required thickness and all works as per manufactures specificationsand as directed by theEngineer in charge, including curing, cost of materials, labour, scaffolding upto aheight of 4 mtr,conveyance etc, but excluding cost of form work, bonding agent, reinforcement andSS welded mesh. Thework shall be carried by an agency having sufficient experience and should ensure aguarantee of 5years.Only skilled and experienced persons shall be employed for this purpose. For 30 m2 with an avg thickness 30mm 31 MICROCONCRETE ABOVE 5cm THICK 32 Microconcerte measured in m3 for thickness more than 5cm, providing and applyingmicroconcrete for thickness above 50mm with fluid micro concrete product, such asRenderocRG/MasterEmaco S 346/Cera microconcrete of M/s<br>Fosroc/BASF/CeraChem or Similar respectively, withpotable water, mixing by heavy duty slow speed electrically operated stirrer afterpouring the water in amixing vessel, mixed material shall be poured through the feed hopper into wellpositioned form work for therequired thickness and all works as per manufactures specifications and as directed bythe Engineer incharge, including curing, cost of materials, labour, conveyance etc, but excluding costof form work,bonding agent, reinforcement and SS welded mesh. The work shall be carried by anagency having sufficientexperience and should ensure a guarantee of 5years. Only skilled and experiencedpersons shall beemployed for this purpose 33 THIXOTROPIC MORTAR 34 Providing and applying single component fibre reinforced thixotropic non shrinkrepair mortar such as BASF EMACO S48CT or FOSROC/BOSTIK product forcolumns, beams, slabs and otherstructural members with 4 ltrs of potable water per 25kg of product, mixing by heavyduty, slow speed drill with spiral mixing paddle or a Pan type mixers etc. afterpouring the water in a mixing vessel, mixed materialshall be applied both by trowel or spray application and finished to get a uniformthickness and finish and all works as per manufactures specifications and as directedby the Engineer in charge, including curing, cost of materials, labour, scaffoldingupto a height of 4 mtr, conveyance etcThe work shall be carried by an agency havingsufficient experience and should ensure a guarantee of 5years. Only skilled andexperienced persons shall be employed for this purpose 35 SBR PLASTERING 36 Providing, mixing and applying SBR polymer (of approved make) modifiedCement mortar in proportion of 1:4 (1 cement: 4 graded coarse sand withpolymer minimum 2% by wt. of cement used) as per specifications anddirections of Engineer-in-charge.Note: Measurement and payment: The pre-measurement of thickness shall be done just after the surface preparation is completed and Payment under thisitem shall be made only after proper wet curing has been done and surfacehas been satisfactorily evaluated by sounding / tapping with a blunt metalinstrument and/or the 75mm size cube crushing strength at the end of 28 daysto be not less than 30 N/Sqmm2).12 mm average thickness. 37 APPLYING EPOXY PAINT OVER CEMENT SURFACES 38 Finishing with Epoxy paint (two or more coats) at all locations prepared and appliedas per manufacturers specifications including appropriate priming coat, preparationof surface, etc. complete.On concrete work 39 Miscellaneous Labour 40 Miscellaneous Labour Please Enable Macros to View BoQ information
