Cooling Tower Sump Retrofitting Works during the MTA-2024 at HWPM

Amount

Drilling of holes in concrete slab by core cutting machine for 75mm diameter upto a depth of 200 to 225mm depth at required spacings in slab in all grade of concrete as per specfications and as directed by the Engineer in Charge.

Providing and Placing Non Shrink, Cementitious micro-concrete of 120 mm thick by using Rendroc RG of FOSROC/equivalent for jacketing/strengthening of the soffit of the slab adding 30%(maximum) of 12mm/6mm downgraded aggregate by weight of micro-concrete to attain early compressive strength of 30 Mpa in 3 days. The material is based on Ordinary Portalnd Cement , graded aggregates and fillers and additives which impart controlled expansion characteristics in the plastic state, including machine, material, tools, labour etc complete.( 1800Kg/Cum with agg. & 1900 Kg/Cum without agg.) as per specification and as directed by the EIC. Concrete has to be poured through drilled holes( Item No. 01) spaced at regular intervals and tapping if required at various locations has to be made to the formwork to ensure free flow of the micro-Concrete and filling of the entire portion of the slab area. Note:- The works from Item Nos 1 to 7 has to be executed during Major Turn Around of the plant during Common Shut down and has to be executed within a period of 20 days

Providing and fixing plywood shuttering for slab to receive micro concrete, centering with adjustable steel jack props including deshuttering all complete as per the directions and specifications of the Engineer-In-Charge.

Making 20 mm or 18mm dia holes in concrete walls up to a depth of 100mm for receiving 16mm dia tor steel with concrete drilling machine, cleaing the holes with air jet, and fixing the rebars with lock fix of fosroc or any other approved make, removing the excess slurry, all complete .as per the directions and specifications of the Engineer-In-Charge ( Re bars will be paid in the relevant items seperately)

Providing, laying and fixing in position TMT reinforcement bars of TATA/VIZAG /JINDAL make for RCC works, including cost of supplying, cutting, bending, transporting, erecting, binding with 16 gauge MS annealed wire, placing cement mortar spacer blocks etc.including positioning the bars with anchoring the same at required intervals to soffit of slab by 8/10mm ms rods with locfix/anchor bolts all complete as per specifications and as directed by the Engineer.

Providing & applying two or more coats of solvent free epoxy paint of HUNTSMAN/CICO/FOSROC or equivalent consisting of bisphenol A epoxy with polyamine hardener in suaitable proportions as recommended by manufacturer's on concrete surface, over a coat of epoxy-cement primer (formulation of water-based epoxy resin + cement) to achive a total dry film thickness of 225 to 250 microns, to protect concrete surface from various acids, alkalies, sodium sulphate solid as well as liquid solution including preparing the surface by scrapping, scrubbing with wire brushes and cleaning with air blower, drying the surface, including cost of all materials, labour, power tools & tackles etc. complete as per manufacturers recommendations, as per specification & as directed by the Engineer-In-Charge

Excavation with mechanical equipment (JCB) to required depth /for levelling etc including disposing of surplus excavated soil within plant premises all complete as directed by the Engineer

M/s K SATYAM CONTRACTOR