Repair of 2800mm dia RCC pipe line externally using chemical agents/compounds between Hindon Aquaduct to Teela morh on select locations under 200 Cusec Delhi Water Supply Maintenance Scheme.

REPAIR OF PIPELINE

Dewatering from pipe line of 200 cusec pipe line for distreess assisement, testing work including hiring of pump set of . diesel operator etc. complete & suction pipe & delivery etc. complete.

Cleaning of Joints including removing of baker rod, filling and all other loose materials from the expansion joint and clean the surface around the joint to make it free from loose particles,dirt,oil,grease etc and disposal of malba/debris outside of pipeline including all labour,T&P etc complete.

Drilling and fixing injection packers in RC members including, 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.Patching Hole:- After cutting of packer we patch the hole on epoxy putty.

Supply and apply single component, Polyurethane Injection foam based system for wet condition and temporary sealing, which cures to a dense flexible foam with a fine cellular structure. Minimum Product Requirements: Viscosity cps 500-1300 at 23°C. Application of Polyurethane injection system either by grouting or by a hessian cloth soaked in it and then inserted into the joint.

Supply and apply 2 component, elastic, low viscous, solvent free, Polyurethane Injection resin based system for permanent sealing, that does not need the presence of water for hardening reaction Product Requirements: Viscosity of mixture < 100 mPa•s (at +20°C) Capable of penetrating cracks>0.2mm wide with a CE Marking (European Conformity) -> Conformance label that product is approved to the essential requirements and under market surveillance

Repairing the edges of the joint (in case of weak concrete at the joint edge) and also configuring the joint width (in case of expansion joints with irregular width more than the width of the chosen Sikadur Combiflex Tape width) with epoxy repair mortar Sikadur 31 and Sikadur 41/ Sika Latex or its equivalent.

Filling the joints with Polystyrene baker rod of the size next higher to the joint gap and apply Polyurethane based sealant in the expension joint up to a depth equal to not less than 1/2 the width of the joint including insert of bitumen impregnated board as filling material,T&P etc. complete.

Chipping of unsound/weak concrete material(like plaster, loose concrete, oil, rust, dust, and other impurities ) from RCC surface with manual Chisel and or by standard power-driven percussion type 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 the direction of Engineer-In-Charge

Removing all existing unsound/loose material like plaster,loose concrete,loose particle,oil,dust and other impurities etc manually by chisel and hammer from rcc conduit surface. Making Rcc surface thoroughly cleaned using wire brush and water including disposal of debris outside of pipeline.

Supply and apply two coats of sodium silicate-based quick setting cement mortar to prevent leakage in the place system Similar Product Make: Sikafloor® curehard-24 or its equivalent completion as per the direction of the engineer in charge Consumption: 0.25 kg/m2 per coat

Application of rust remover cum passivator (Restolene) on steel bars and also application polymer (Build Crete) in two coats on steel bars (sika rustoff -100) or its equivalent completion as per the direction of the engineer. Consumption: 0.150 kg/m2 per coat

Providing and applying the epoxy-based bonding agent on the dry and prepared surface. Product: Sikadur®-32 LP or its equivalent Consumption: 0.45kg/m2 Product requirements: mixed density: 1.70kg/ltr; shear strength > 10MPa.

Providing, mixing and applying polymer modified cement concrete/mortar at an average thickness of 10-12 mm in multilayers, including making smooth surface with wooden tools etc complete as per specification and directions of enginner in charge. Similar Product Make: SikaLatex®-SBR or its equivalent Consumption: 10% by weight of cement Product: specific gravity- 1.02, mixing ratio -1:5 (SikaLatex: water) other material as per grade, density - 2300 kg/m3

Providing, mixing, and applying Latex polymer-modified cement concrete in the ratio (1:1.5:3) (with polystyrene-based epoxy system, and furane system to be used as per the direction of the manufacturer), including making smooth surfaces with wooden tools, etc complete as per specification and directions of the engineer in charge. Similar Product Make: SikaLatex®-SBR or its equivalent Consumption: 10% by weight of cement Product: specific gravity- 1.02, mixing ratio -1:5 (SikaLatex: water) other material as per grade, density - 2300 kg/m3

Providing, mixing, and applying two coats of protective epoxy coating over finished and dry surfaces. Similar Product Make: Sikagard®-67 or its equivalent Consumption: 0.25 kg/m2 per coat Product requirements: mixed density: 1.22kg/ltr;

Finishing / Painting of the external surface of walls with premium acrylic smooth exterior paint (asian apex Ultima paint or its equivalent) of approved shade to give an even shade in two coats after applying priming coat of cement primer including all material, labour T & P etc.

Making scaffolding and dismantling the same after completion of work including cost of material, labour, T&P, transportation etc. required for proper completion of work.

CLEANING OF BIG JHUND AND SNATCHING OUT OF PLANTS FROM HINDON AQUADUCT TO TEELA MORH

Cleaning of big jhund, bush, wood plants upto 3.0m height including uprooting of rank vegetations etc. and including disposal of same within 250m distance.

Cutting and snatching out the plants from the joints of viaduct and above of pipe line from the earth.

Labour cess@1%