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| 1 | Preliminary Works & Safety ArrangementsScaffolding net made of high density polyethylene UV stabilized having density 100 gm/sqm Providing and erecting Dust Net/Green Net along the periphery during Repair/construction to control debris from spreading beyond repair/construction work as directed by Engineer In charge. (Just for cautionary no need of load bearing). |
| 2 | Sump Boring and Dewatering SystemExcavation: Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and for all lift, as directed by Engineer-in-charge. |
| 3 | Sump Boring: Boring of 150 mm diameter sump holes up to a depth of 4.0 metres at 50 m c/c spacing in all types of soil, including drilling by mechanical auger/manual means, maintaining true verticality and alignment, complete removal of excavated earth, dressing of bore sides, disposal of surplus material within specified lead and lift, and including all labour, tools, plants, and incidental charges required to complete the work as per site conditions and directions of Engineer-in-charge. |
| 4 | Manhole Cover: Rectangular manhole 120x90 cm with circular cover 560 mm dia of grade HD - 20 as per site requirements and direction of Engineer-in-charge. |
| 5 | Dewatering Pump: Providing, installing, testing and commissioning of self-operating/self-sensing submersible dewatering pump of suitable capacity (1.5–2.0 HP, discharge 150–250 LPM at 12–18 m head), capable of automatic start and stop based on water level for continuous dewatering to relieve hydrostatic pressure of groundwater, including float switch/level sensor, control panel with auto/manual operation and overload protection, power cable, HDPE/GI delivery pipe, non-return valve, gate valve, all fittings and accessories, complete in all respects including sump and cover as per site requirements and direction of Engineer-in-charge. |
| 6 | Soil StabilizationDrying of water through 1HP/2HP Submersible or with required cables, labour charges fittings & accessories etc, Drilling/Boring, PVC/Casing Pipe. Operation & Maintenance with 30 meters delivery Pipe. (Electricity shall be supplied by client) |
| 7 | Dismentling of RCC: 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. |
| 8 | Excavation: Earth work/Sand in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and for all lift, as directed by Engineer-in-charge. |
| 9 | Single Under Reamed Pile: Boring by shell and auger manual method for providing single under reamed pile of specified diameter and length below pile cap to carry a safe working load not less than specified, including cost of boring with bentonite solution and the length of pile to be embedded in pile cap etc. all complete. (Length of pile for payment shall be measured upto bottom of pile cap.) 300 mm dia piles upto 3.5 m to 5.0 m depth. |
| 10 | Steel Reinforcement: Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. |
| 11 | Concreting M-25: Providing and laying in position ready mixed or site batched design mix cement concrete of M25 grade for plain cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana/ Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering and finishing as per direction of the engineer-in-charge; for the following grades of concrete. |
| 12 | Strengthening of RCC MembersSteel Scaffolding: Providing and fixing double scaffolding system (cup lock type), 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 Engineerin-charge. The elevational area on single face of scaffolding shall be measured for payment purpose .The payment will be made once irrespective of duration of scaffolding. |
| 13 | Providing and erecting MS Props , H Frames including cross bracings jacks etc. to support to the distress structure during repair and maintaining them in position till required as directed by the consultant / Engineer In-charge. |
| 14 | Removal of Plaster: Carefully chipping , removing existing plaster upto required thickness as per site condition by low impact high frequency hammer/chipper without damaging the original sound brickwork or concrete including removal of POP/ Gypsum plaster if any on RCC members any thickness, racking of joints, etc. complete as directed by Engineer-in-charge & as per site condition. (Note: extra thickness if any will not be paid additionally) |
| 15 | Removal of Unsound Concrete: Carefully removing and cleaning of existing loose & unsound concrete of beams, slabs & columns ,including removal of concrete at least 20 mm beyond steel reinforcement to expose reinforcing bar by low impact high frequency hammer OR by manual chipping without damaging the existing concrete or control sandblasting including cleaning the surfaces by air jet etc.; |
| 16 | Reinforcement Cleaning: Clean existing reinforcement with wire/ rotary wire brush, making the surfaces free from loose material dirt etc. complete, Applying one coat of rust remover and two coats of Zinc Rich Primer on the rebars, including cleaning the reinforcement, wire brushing to remove loose rust spalls, with time interval of 1 hour between the coats. - (Mode of measurement- per sqmt of breaking area of concrete ) |
| 17 | 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 dus\\" 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. |
| 18 | Epoxy Grouting: Grouting / flooding low viscosity Resin thermosett Epoxy Grout material by pressure and using injector with accessories till nozzles refused to accept the grout, Including, Mixing of materials: Mixing material components part 'a' and part 'b' in required quantities as per mfg instruction by weigh batching Grouting: Fill the grouting gun with grouting material .Maintain desired pressure in the gun by air compressor maintain the pressure at exit (3 to 4 kg/Cm2) by monitoring pressure gauge at exit. Grout the material through prefixed nozzles in the structural elements till its refusal. Seal the nozzle with epoxy putty after the refusal. Monitor leakages through other nozzles while grouting and seal them as per the requirement. |
| 19 | Cementitious Grout: Providing and injecting Cement grout of Make FOsroc/ MYK Arment /SPT / SIKA or equivalent with cement In the ratio as per specifications with grouting pump at a pressure @ 1.5 to 3.5 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/ MYK Arment Fis 10/SPT / SIKA or & equivalent as per specifications given above. Approximate No. of Nozzles Considering 600 x 600 mm grid on RCC members and 150 mm C/C along the crack. |
| 20 | Crack Injection & Carbon Rebar Stapling/StitchingCrack Sealing: Removal of plaster or any finishes to expose concrete surface at crack locations, identifying and marking cracklines on the beam faces and soffit, cleaning the crack line surface of dust, loose particles, grooving along the crackline to a depth of 8-10mm using diamond blade, providing and filling thixotropic epoxy into the grooved cracks to be flush with surrounding concrete surface. |
| 21 | Epoxy Injection for Cracks 0.5 mm and above: Surface preparation for cracks , followed by providing and installing surface mounted ports of the low pressure multi port auto injector system at spacing of 150mm-300mm c/c (depending on crack width and beam depth), and injecting low viscosity two component epoxy resin by low pressure, multi port auto injector system into the injection ports until refusal or overflow. |
| 22 | All Cracks: Upon sealing and injection as applicable, removal of injector ports. Stapling/Stitching of crackline at slab soffit by providing and installing CFRP rebar precured 'C' shaped staples 4-5mm dia. and upto 200 mm length, with 75mm staple leg depth, at an average spacing of 200-300 mm c/c including drilling holes on either side of crackline, cutting groove of 5-6mm depth and width to join the drilled holes, priming the groove with epoxy resin and allowing to cure. Injecting the drilled hole with thixotropic epoxy resin. Inerting the CFRP staple legs into the holes and filling the groove with thixotropic epoxy, to be flush with surrounding concrete surfaces. |
| 23 | Providing and inserting grouting GI nipples and 30mm to 40mm depth or half the thickness of the member which ever is less into honeycombed concrete / normal concrete i/c drilling ol holes, inserting nipples and sealing the gap around nipples with epoxy putty etc. complete, as per directions of Engineer-in-charge. |
| 24 | PU (Polyurethane) pressure grouting : Inject flexible plain polyurethane resin, which is solvent-free and a two-part system, into the predrilled holes and nozzles after primary injection with pu foam for sealing cracks, complete. The scheme for the location of the inject grout must be approved by the eic before installation. |
| 25 | SBR Bond Coat: Providing and application of bond coat on the concrete surface by mixing high dispersion SBR latex like MasterEmco with cement. The mixing shoul be done to a lump free consistency for the bond coat and the screed/ mortar should be applied once the bond coat is tacky. Master Emco SBR MYK, STP, MAPEI or Nitobond SBR (Latex) of Fosroc or equivalent. |
| 26 | Epoxy Bond Coat: Providing and applying structural grade epoxy bond coat prior to building up of section with any type of mortar/ concrete to ensure bond between old concrete and new concrete or micro concrete by brush application as per the manufacturer’s specifications and satisfaction of the Engineer In charge. Approved makes of Epoxy Bond Coat are Sika orFosroc or Basf or approved equivalent. |
| 27 | Polymer Modified Mortar (PMM): Readymix Polymer modified mortar system Providing and applying Upto 25 mm Thickness, Dual shrinkage compensated, trowelable fibre reinforced thixotropic repair mortar with Density of material not less than 2250 kg/Cum & 28 day strength of material not less than 40 MPa after chipping of unsound concrete to make up the lost concrete section to have an even final surface for fibre wrapping system complete as per specifications of manufacturer and instruction of Engineering In Charge. (Cost of chipping of concrete will be paid seperately) |
| 28 | Centering & shuttering: Centering & shuttering with plywood or steel sheets including strutting, propping bracing both ways with steel props and removal of formwork for upto required level for :Columns, pillars, posts and struts etc. |
| 29 | Steel Reinforcement: Makeup lost steel area due to corrosion by providing additional steel reinforcement. The steel shall confirm to IS 1786 grade Fe 500. Fixing of rebars is to be with pre left binding wires with existing steel at regular grid.(Make - JSW, Tata, SAIL, Vizag) |
| 30 | Rebaring Providing laying and fixing in position steel Rebars of following sizes in reinforced concrete work, including removal of loose concrete by wire brush, drilling hole of required size, laying position using epoxy at all levels and heights but excluding the cost of reinforcement as per drawing and design, manufacturer's specifications all complete as per site requirement and as directed by Engineer-in-charge. (MAKE:-HILTI,FISCHER or Equivalent)12 mm Dia |
| 31 | 08 mm Dia |
| 32 | Shear Key: Providing and fixing of L/U shaped 150mm long, 10mm dia 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 upto 200mm in RCC beams, slab and columns 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 & site condition (Make : SIKA, FISCHER, HILTI) |
| 33 | Microconcrete: Rebuilding the section of damaged RCC elements to its original size or as per consultants recommandations in thicknesses of 40-100 mm by providing and casting with microconcrete of grade M50 and above including providing and fixing of watertight foam faced finish shuttering of minimun 18 mm th. with supporting framework,all lead lift, mixing, placing, deshuttering, levelling the surface by grinding off cementitious slurry or construction joint differences if any to satisfaction of engg. incharge, curing etc. complete. |
| 34 | CFRP: Providing and applying the marked application area with surface primer compatible with proposed CFRP Wrap system and allowing it to cure as per manufacturers specification. The Fiber sheet is to be trimmed to the required length giving due consideration to end laps or projections if any as per working drawings and placing the same over a even layer of epoxy adhesive (Saturant) applied over concrete surface and saturating the same, removing of air voids with tamping roller, cutting of any loose threads, fiber, if any and applying second coat of saturant over the fabric sheet as per manufacturers specification, etc complete. (Note : 150 mm end lap along the sheet length and 20 mm wide sheet to sheet lap to be paid extra, measurement per actual fiber sheet area applied and not surface area of concret surface) (make Enwrap / Nex Carbon Composite LLP /FYFE)300 GSM Carbon Unidirectional Wrap |
| 35 | CFRP Anchors: Demarking the locations of CFRP anchors on the newly wrapped RCC surfaces with proper spacing, drilling 12 mm dia and 75 to 100 mm deep holes, saturating the fixed end of FRP anchor with epoxy resin and inserting anchors inthe holes, spreading and pasting the 8 CFRP petals of anchor over the CFRP with saturant, finishing, levelling with roller, etc complete. |
| 36 | Sand Sprinkling: Providing and applying Quartz Sand over the FRP Wrapped Surfacewith epoxy saturant to ensure bond for second layer of finishes such as Plaster, POP etc |
| 37 | Fire Protection Mortar: Supply and applying 20mm thick single component, cement based, phyllosilicate aggregates, prebagged dry mix, wet spray/hand application fire protection mortar, inclusive ofproviding & execution of steel props/scafffolding system, shuttering, centering and chipping of unsound concrete / cover of reinforcement over R.C.C members at all heights & floors. The Product shalll be CE certified, declaration of performance according to EN 998-1:206. The material to be used shall be of approved manufacturer only and provide valid certificates as a proof. Collection & removal of malba shall be outside of site. |
| 38 | Curing Compound: Supplying and applying pre tested and approved water based concrete curing compound to concrete/ masonry surface, all as per manufacturer’s specification and direction of Engineer-in-charge. (Non pigmented wet curing compound) |
| 39 | Anti Carbonation Coating: Providing & applying anti-carbonation coating (aliphatic acrylate solvented coating system or epoxy based coating) in 2 coats of approved bond and quality using airless spray technique on concrete/ gunite /polymer modified mortar surface. Please Enable Macros to View BoQ information |
