Repair of 2800 mm dia RCC pipeline externally using chemical agents /compounds, preventive maintenance and other miscellaneous works on select chainages between chainage 06.00 Km to 14.60 Km under 200 Cusec Delhi Water Supply Maintenance Scheme.

TREATMENT OF JOINT

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

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.

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.

REPAIR AND PROTECTION OF MANHOLE SHAFT BETWEEN CHAINAGE 06.00 KM TO 14.60 KM

Excavation of earth from the pits and cartage by truck beyond 4.00 km. distance and filling of clayey type of earth over and in the sides of pipeline wherever it is required to maintain the minimum one metre cover over the exposed pipe to project it, including loading and unloading, all labour and T&P etc. and also including leveling, watering and ramming etc. required for proper completion of the work including cost of earth, its royalty and all taxes. Protection of Man hole shaft

Dismantling of existing old / crack plaster of manholes including disposal of malba (refused material) within 50m lead including all labour & T&P etc. complete.

12mm thick plaster on the walls of manholes in (1:4) proportion of cement & fine sand including all material, labour, T&P etc. complete.

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.

Numbering on the manhole shafts with blue enamel paint with two coats in 20 cm dia circle of white paint including supply of all material, labour, T&P and scaffolding etc. complete.

Painting and writing caution/warning with synthetic enamel paint on R.C.C. caution boards of size 2.00m x 1.00m (approximate 2 sqm area) including all materail, labour T & P etc.

Supply and fixing of two ply new G.I. barbed wire of wt. 0.938 kg. / m and its stretching on top of the existing manholes shaft including supply of all materials, labour, T&P, scaffolding etc. complete (10 lines in each side).

CLEANING OF BIG JHUND AND SNATCHING OUT OF PLANTS BETWEEN CHAINAGE 12.60 KM TO 14.60 KM

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 of branches of trees along the pipe line including all labour, T&P and scaffolding etc. rerquired for proper completion of work.

Labour cess@1%