Repair of 3200 mm dia RCC pipeline externally using chemical agents / compounds on select locations from Gokulpuri campus to Tail Reach

Excavation in Foundation in all type of soil including lift upto 1.50 m or above as required and lead upto 50 m filling watering and ramming of excavated eartch into the trenches and disposal of surplus earth upto a distance of 50 m from the centre of foundation.

Dewatering from ditches, pits and trenches around 3200 mm Dia RC pipeline 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 intervals as per the recommendation of the engineer in charge. Cleaning of holes: Clean the holes with air blower before 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 wheel after grouting completion without damaging structural elements. Patching Hole:- After cutting off the packer we patch the hole on epoxy putty.

Supply and application of single component, Polyurethane Injection foam based system for wet conditions 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

Supply and application of 2 components, 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: The viscosity of the mixture < 100 mPa*s (at +20°C) Capable of penetrating cracks>0.2mm wide with a CE Marking (European Conformity) -> Conformance label that the 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.

'Providing and applying the base coat of epoxy adhesive on both sides of the joint as per the width of the Sikadur Combiflex SG Tape. Product: Sikadur-Combiflex & Adhesive or its equivalent. Consumption: 1.4 kg at strip width 200 mm. Yielding requirement: mixed density: 1.60 kg/ltr, bond strength ≥ 2 N/mm².

Providing and applying flexible FPO based tape 200 mm x 2 mm as per manufacturers' method statement (for 50 to 100 mm or lower joint size). Similar Product Make: Sikadur-Combiflex SG System or its equivalent. Product Requirements: – Chemical Base Modified flexible Polyolefin (FPO) with advanced adhesion. – Fire Rating Euroclass E (EN ISO 11925-2, classification to EN 13501-1). – Service Temperature: -30°C min. to +40°C max. in wet conditions; -30°C min. to +60°C max. in dry conditions. Mechanical/Physical Properties: Tensile Strength ≥ 12 N/mm² (EN 12311-2) Tear Strength ≥ 40 N/mm (ISO 34-1B) Elongation at Break ≥ 600% (EN 12311-2) Seam Strength ≥ 340 N/5 cm (2 mm) (EN 12316-2) 400 N/5 cm (2 mm) (EN 12317-2). Behaviour under hydrostatic pressure: 6 bar / 72h No leakage (EN 1928-B). Chemical / Thermal Resistance:Passed (SIA V280, 1996), Bonding test: No cracks at -40°C (EN 495-5). Artificial weathering 750 h passed (SIA V280, 1996).

Providing and applying epoxy adhesive coat over the water proofing tape on either side of the joint, covering the sides of the top and bottom 5 mm beyond the edges over the lower tape, and covering and finishing the upper adhesive layer by tapering the edges completely covering the joint length. Product: Sikadur-Combiflex A Adhesive or equivalent. Consumption: 1.4 kg at strip width 200 mm. Product requirements: mixed density: 1.60 kg/ltr, bond strength ≥ 2 N/mm².

REPAIR OF SURFACE OF VIADUCT FROM KHAJURI KHAS TO SONIA VIHAR TREATMENT PLANT

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.

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 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.

Labour cess@1%