NIT No.26/XEN/CMD1/2020-2021/F486 dated-10.10.2020

Amount

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 cooling tower/ 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.

Chipping and removal of spalled concrete, cracked, porous and weak concrete loose, delaminated or unsound concrete by high pressure water blast/ chipping/ mechanical chisel/hammer or by other means as per site requirement and wire brushing, emery sheets etc. Cleaning and removal of rust of reinforcement and micro fractured particles and foreign material from the repair area by pressure washing or other suitable means necessary to clean surface in all types of structures at all levels. The item includes all cost of labour, material, T&P, other safety measures, provision and usage of the relevant personal protective equipment etc. The work shall be carried out as per direction of Engineer-In-Charge. Depth up to 20 mm

Chipping and removal of spalled concrete, cracked, porous and weak concrete loose, delaminated or unsound concrete by high pressure water blast/ chipping/ mechanical chisel/hammer or by other means as per site requirement and wire brushing, emery sheets etc. Cleaning and removal of rust of reinforcement and micro fractured particles and foreign material from the repair area by pressure washing or other suitable means necessary to clean surface in all types of structures at all levels. The item includes all cost of labour, material, T&P, other safety measures, provision and usage of the relevant personal protective equipment etc. The work shall be carried out as per direction of Engineer-In-Charge. Depth 20 mm to 30 mm

Chipping and removal of spalled concrete, cracked, porous and weak concrete loose, delaminated or unsound concrete by high pressure water blast/ chipping/ mechanical chisel/hammer or by other means as per site requirement and wire brushing, emery sheets etc. Cleaning and removal of rust of reinforcement and micro fractured particles and foreign material from the repair area by pressure washing or other suitable means necessary to clean surface in all types of structures at all levels. The item includes all cost of labour, material, T&P, other safety measures, provision and usage of the relevant personal protective equipment etc. The work shall be carried out as per direction of Engineer-In-Charge. Depth 30 mm to 40 mm

Supply and application of approved Cement based epoxy modified bonding compound approved by the engineer-in-charge as per the list mentioned in the Specifications for bonding High Bond Strength Cementitious Crystalline Mortar to old concrete in all types of structures at all levels. including the provision of necessary working platforms, scaffolding and other safety measures, provision and usage of the relevant personal protective equipment. The item includes all cost of labour, material, T&P, other safety measures, provision and usage of the relevant personal protective equipment etc. The work shall be carried out as per direction of Engineer-In-Charge and as per manufacturer’s guidelines.

Providing and applying High Bond Strength Cementitious Crystalline Mortar at various levels and locations in natural draft cooling tower as per the specifications and direction of Engineer-In-Charge as per the thickness given below as per the requirement of site conditions. The item includes all cost of labour, material, T&P, other safety measures, provision and usage of the relevant personal protective equipment etc. The work shall be carried out as per direction of Engineer-In-Charge. Depth up to 20 mm

Providing and applying High Bond Strength Cementitious Crystalline Mortar at various levels and locations in natural draft cooling tower as per the specifications and direction of Engineer-In-Charge as per the thickness given below as per the requirement of site conditions. The item includes all cost of labour, material, T&P, other safety measures, provision and usage of the relevant personal protective equipment etc. The work shall be carried out as per direction of Engineer-In-Charge. Depth 20 mm to 30 mm

Providing and applying High Bond Strength Cementitious Crystalline Mortar at various levels and locations in natural draft cooling tower as per the specifications and direction of Engineer-In-Charge as per the thickness given below as per the requirement of site conditions. The item includes all cost of labour, material, T&P, other safety measures, provision and usage of the relevant personal protective equipment etc. The work shall be carried out as per direction of Engineer-In-Charge. Depth 30 mm to 40 mm

Providing elevated working platform upto 200 ft. for carrying out the repair work effectively using boom lifts or any other suitable arrangement including fuel & driver as per the requirement of site.

Supply and apply of rust remover cum passivator to remove rust from existing reinforcement. Consumption: 0.2kg/m2/coat, Density: 1.01 kg/l at 30 deg celcius. Product: SikaRustoff 100 or Equivalent

Supply and apply a cement based polymer modified rebar corrosion protection system to existing reinforcement. Product requirements: Carbonation resistance: 2mm of coating must corresponds to 20mm of normal mortar; bond strength> 1N/mm2 according to ASTM C 882-78. Product: SikaTop Armatec 108 or equivalent

Providing extra reinforcement with TMT bars as per site design requirement including straightening, cutting, bending, placing in position, binding with G.I. wire of 18 gauge etc. complete in all respects. Additional reinforcement with adequate lap length & rings at required spacing shall be tied with existing reinforcement using binding wire or welded complete as per site requirements and direction of EIC.

P & F of Extra rebar 12mm dia*120mm depth vertically: Providing extra rebar with Fischer FIS V 360 S chemical (or equivalent) including power drilling ,cleaning of holes, then rebars should be inserted in holes that should be filled with epoxy to ensure the bond and straightening, cutting , bending, placing in position, binding with GI wire of 18 gauge. Complete in all respects.

Providing, mixing & applying two component epoxy resin concrete bonding coat on prepared RCC surfaces as per manufacture specification including preparation of surface by chipping and thoroughly cleaning of surface complete wherever required. Consumption:0.4kg/m2.Product requirements: Complies with ASTM C 881 Type II. Product: Sikadur 32 LP or equivalent

Providing and fixing water tight centring and shuttering.

Supply and apply a ready to use non shrink, cementitious free flow microconcrete. With addition of 50% aggregate. Product requirements: Compressive strength>50 N/mm2(28 days) according to ASTM C 1107-99, Yield: Approx 17ltr/bag(30kg), Thickness= 150mm. Product: SikaRep Microcrete-4 or equivalent.

Making 'V' groove of 5mm wide and 5mm deep over crack line by electrically operated angle grinder with diamond concrete saw blade and cleaning it by air blower as directed by Engineer-in-charge. Supply and apply solvent free, moisture insensitive epoxy resin based patch repair putty on vertical surfaces. Product requirements: suitable for submerged condition; compressive strength of 40 N/mm2 (1 day) according to IS 9162-1979. Product: Sikadur®-31 or equivalent.

Drilling and fixing injection EPOXY packers for epoxy injection grouting in RC members. Drilling Holes: Drilling holes in structural members at the intervals as per recommendation of engineer in charge. Cleaning of holes: Clean the holes by air blower prior to fixing nozzles. Fixing of Packers: Insert 12 mm dia., 50~75 mm long injection packers in cleaned holes with mositure insensitive epoxy resin based putty or equivalent. Cutting of Packers: Cut the packers by cut of wheel after completion of grouting without damaging structural elements.

Supply and apply a moisture intensive, epoxy resin based injection grout for wet or damp location. Mixed Density: 1.14 kg/l at 27 deg celcius Product requirements: bond strength >10 N/mm2 or concrete failure according to ASTM C 882 at 30 deg celcius; compressive strength >85 N/mm2 according to ASTM C 579. Product: Sikadur®-52 SLV or equivalent

Drilling and fixing injection PVC packers for cement grouting in RC members. Drilling Holes: Drilling holes in structural members at the intervals as per recommendation of engineer in charge. Cleaning of holes: Clean the holes by air blower prior to fixing nozzles. Fixing of Packers: Insert 12 mm dia., 50~75 mm long injection packers in cleaned holes with moisture insensitive epoxy resin based putty or equivalent. Cutting of Packers: Cut the packers by cut of wheel after completion of grouting without damaging structural elements.

Injection Grouting of cementitious micro fine crack injection grout for structural repairs. Product Requirements: d-Particle size should be < or = to 12 microns, form dry fine powder, single component, Blaine Fineness > 8000 cm2/gm, marsh cone viscosity is 30 ± 5 Seconds. Product Name: Alccofine 1108 KR or equivalent.

ACME TECHNOLOGIES

TANUJ AGARWAL CONTRACTOR

ABHAY SAHNI PROJECTS PVT LTD

STANDARD REHABILITATORS PRIVATE LIMITED