COMPREHENSIVE MAINTENANCE AND REPAIR IN THE AOR OF POCKET NO. 07 UNDER GE (A) JAISALMER AT MIL STN JAISALMER

M&L for Cleaning & applying rust remover (Sika rustoff100)) in two coats over rusted reinforcement surface and providing anti corrosive coating with two component epoxy based zinc rich primer/Rust passivation Inhibitor coat at the rate of 6-8 sq. mtr/ltr not less than 50 microns dft with Sika friazinc R or equivalent to reinforcement surface as per manufacturer’s instructions including all scaffolding, machinery, tools tackles and clearing of debris complete all as specified and directed by Engineer-in-charge.

M & L for Chipping of 25-30 mm average thickness unsound/weak concrete material from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or 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. further applying polymer based bond coat on the prepared old surface of concrete /masonry to receive new polymer mortar/polymer modified mortar with two coats of Thermax TM Bond AR as per manufacturer specifications. Laying of polymer modified mortar shall be completed within the overlay time of bonding coat. This bond coat act as bonding agent between old and new concrete. further applying to the damaged concrete portion of slab / columns / beams / chajjas / parapet / roof projection/balcony/staircase with single component, fiber reinforced, dual shrinkage- compensated thixotropic, cementitious patch repair polymer modified mortar Thermax BS 5F (having the technical parameters mentioned in material specifications ) capable of applying up to 25-30 mm thick in single layer initially by hand and finishing with troweled carefully compacting the same around the rebar and finishing to bring it in line with existing concrete surface with an average specified thickness. its material consumption is 50kg/sqm for 25-30 mm thickness, all as specified and directed as Engineer-in-Charge. Note : The quoted rate by the contractor shall include cleaning of surface, application as per instruction and scaffolding upto 20 mtr height.

M & L for Chipping of 12-15 mm average thickness unsound/weak plaster concrete material from slabs, beams, columns/break work, masonery wall etc. with manual Chisel or by standard power driven percussion type machine of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed surface with wire brushes etc. and disposal of debris for all lead. further applying 12-15 mm Ready to use plaster Ultratech Readiplast RP or equivalent. Its excellent replacement to conventional plaster and conforms to IS 1661-1972, IS 2250-1965, IS 2402-1963, It can be applied using trowels or spatula like in conventional system. can be applied for 15 mm thickness in a single layer for thickness above 15mm multiple layer is recommended. Water powder ratio is 16-19% by weight, compressive strength @ 28 days in 10-12Mpa, Material consumption 20-25kg/Sqm for 12-15mm thickness, all complete as per direction of Engineer-In-Charge. Note : The quoted rate by the contractor shall include cleaning of surface, application as per instruction and scaffolding upto 20 mtr height.

M&L for Shear Connectors by drilling 12mm dia holes up to a depth of 75mm maximum and fixing 8mm dia L shaped anchor rods as shear connectors at every 300mm c/c on the surfaces of the columns/beams or any other structural member as the case may be. Clean the same using air or blower and make sure that there are no fine particles present in the hole and filled the holes with one or two component styrene free vinylester resin anchor or two components, styrene & cement free epoxy- acrylate fixing and anchoring compound. At this stage push the shear connector gently in to the hole and finish the excess resin which comes out of the hole and allow the shear connectors not to be disturbed for Minimum 20 minutes complete all as specified and directed by Engineer-in-charge. Note : Reinforcement shall be paid separately.

M&L Mild steel TMT bars 5mm dia and over upto and including 10mm dia in stirrups, spacers and binders , cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips including dismantling of existing bar complete all as specified and directed by Engineer-in-charge. Note : Additional Reinforcement: In the case of the shear reinforcement also, if the diameter of the rebars are reduced, provide 8mm dia stirrups in the form of 2 "U" shaped bars. Tie them properly so that it has a tight contact with the main bars.

M&L for preparation of new plastered surface and applying two coat of white or tinned with cement base paint on exterior wall complete all as specified and directed by Engineer-in-charge.

M & L Finishing walls with Acrylic Smooth exterior paint of required shade : New work (Two or more coat applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm) complete all as specified and directed by Engineer-in-charge.

M&L for preparation of new plastered surfaces of wall and applying 1mm thick of Birla white wall care putty to achieve smooth surfaces and applying two coats of Oil Bound Distemper of approved shade/tint over a coat of compatiable priming paint complete all as specified and directed by Engineer-in-charge.

M&L for preparation of new plastered surfaces of ceiling and applying three coats of white wash complete all as specified and directed by Engineer-in-charge.

M&L for Preparing of new plaster surface and applying three coat of white wash on newly plaster surface of wall complete all as specified and directed by Engineer-in-charge.