NIT No GE/ND-41/2025-26

M&L for Providing and injecting chemical chlorpyrifos emulsifiable concentrate for Post Constructional Anti termite Treatment Along the external wall below concrete or masonry apron using chemical emulsion @ 2.25 litres per linear metre including drilling and plugging holes etc in apron complete all as specified and directed by Engg in charge.

Providing & injecting chemical emulsion at points of contact of wood work by chemical emulsion (in oil or kerosene based solution) @ 0.5 ltrs per hole by drilling holes at a down ward angles of 45 degree at 150mm center to center & sealing to same complete all as specified and directed.

M&L for providing PMM (Polymer modified cementitious mortar) :- (i) Dry sub strata surface and free of debris & dust (ii) Applying Epoxy bond coat on the sound substrate using approved spray machine & ensuring that no pin holes are visible.(In case pin holes are still visible after a coat, a second coat shall be applied to ensure absence of pin holes). (iii) Immediately after application of epoxy bond coat as above apply PMM (Polymer modified cementitious mortar) of 25 mm thickness. Note : Application of PMM shall be preferably be in coats of appx 10mm thickness. PMM work shall be executed in fairly rapid successions so as entire work is completed with in 30 mins). PMM shall be pre packed ready to use. (iv) PMM surface to be moist cured for three days followed by air curing in temperature as recommended by manufacturer complete all as specified and directed. with necessary scaffolding/form work required for completion of work upto sixth storey height including all safety factor complete all as specified and directed.

M&L for chipping out spilled and loose concrete cover and derusting steel reinforcement of concrete column, beam, slab, chajjas, parapets and the like as directed up to 25 to 35mm thick roughening and cleaning concrete surface with steel wire brushes, washed with water and allowed to dry including derusting steel wire reinforcement, providing fabric MS wire mesh 75 x 75 x 2mm as reinforcement to concrete surface applying adhesive/admixture over steel mesh and providing 25mm average thickness guniting mix using one part of OPC 43 grade and two part of sand mixed with adhesive/admixture @ pressure of 2.5 to 3.00kg/Sqcm by guniting machine and surface finished even and fair including necessary padding, shuttering/scaffolding, formwork (guniting work to be carried out up to 14 metre height) complete all as specified and directed. Note :- (a) After placing the additional reinforcement all concrete surfaces shall be thoroughly scrubbed with wire brushes, washed with water and allow to dry, apply chemistic polycretes admixture @ 2.25 kg by weight of cement all as per manufacturers instruction. (b) when polymix concreting in taking condition,guniting is done with polycretes admixture @ 2% by weight of cement all as per manufacturers instructions (polycretes admixture shall be procured from chemical adhesive Pvt Ltd Co or their authorised dealer). (c) Cost of the above aspect shall be deemed to be included in the quoted rate of the respective item and nothing extra shall be paid on any account.

M&L for fixing rebar of required length & diameter for structural connection in RCC slab, Beams and similar situations including power drilling holes of appropriate diameters in reinforced or plain concrete upto depth minimum 100 mm or as per manufacturers specification, fixing the reinforcement in position using epoxy Arcylate based anchoring adhesive at all heights and levels, 16 mm dia hole suitable for inserting 12 mm dia reinforcement bars with necessary scaffolding required for completion of work upto fourth storey height including all safety factor complete all as specified and directed.

M&L for fixing rebar of required length & diameter for structural connection in RCC slab, Beams and similar situations including power drilling holes of appropriate diameters in reinforced or plain concrete upto depth minimum 100 mm or as per manufacturers specification, fixing the reinforcement in position using epoxy Arcylate based anchoring adhesive at all heights and levels, 14 mm dia hole suitable for inserting 10 mm dia reinforcement bars with necessary scaffolding required for completion of work upto fourth storey height including all safety factor complete all as specified and directed.

M&L for additional reinforcement for strengthening the existing RCC structure, TMT bars 10 mm dia and over, cut to length, bent to shape required, including cranking, bending, spirally for hooping for columns, hooking ends and binding with mild steel wire (annealed) not less than 0.9mm dia or securing with clips with necessary scaffolding required for completion of work upto fourth storey height including all safety factor complete all as specified and directed.

M&L for TMT bars 5 mm dia up to and including 10 mm dia as 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 mild steel wire (annealed) not less than 0.9mm dia or securing with clips including U"shape stirrups with necessary welding required at site with necessary scaffolding required for completion of work upto fourth storey height including all safety factor complete all as specified and directed.

M&L for preparation of exposed surface of rusted steel reinforcement with metal wire brush cleaning the rusted surface free from loose rust and application of rust remover cum passivator applied with brush to the rusted reinforcement, application of rust remover with the help of wire brush, sand paaper and thoroughly washed with water with the help of pressure jet and allowing it to dry at all heights level complete including dismantling/ chipping off spalled/loose concrete cover of RCC surface of chajjas, parapets, railings, beams, columns and the like with out disturbing the core of RCC member with necessary scaffolding/form work required for completion of work upto fourth storey height including all safety factor complete all as specified and directed. Note: Surface area of steel reinforcement bars shall only be measured for the purpose of payment only.

M&L for Preparation of surfaces of steel reinforcement by cleaning thoroughly and providing, mixing and applying zinc-anti-rust agent as zink rich epoxy anticorrosive coating for corrosion protection system in two coats @ 0.20 kg/sqm/coat. The product should confirm carbonation resistance of 2 mm and bond strength > 1 N/ sq mm according to ASTM C 882-78. and as per manufacturers method of application to rebar corrosion protection system to reinforcement at all height levels with necessary scaffolding required for completion of work upto fourth storey height including all safety factor complete all as specified and directed by Engg in charge. Note: Surface Area of steel reinforcement bar shall only be measured for the purpose of payment.