REPAIR OF ROOF TREATMENT IN CERTAIN BLDG OF TECH AREA AT AF STN SIRSA UNDER GE (AF) SIRSA

Taking down of PVC water tanks, over roofs, of capacity 500 to 1000 litres, after disconnecting all water connections, float valves, dewatering, plugging the pipes and keeping aside the tanks in safe custody for removal or re-fixing after water treatment of surfaces complete all as specified and directed by Engr-in-Charge.

Material and Labour Cleaning and removing all Scales and dirts from inside of PVC water tanks, of capacity exc. 250 Litre and not exc. 500 Litre, by scrubbing the deposits with Wire Brush, bleaching powder, etc, including re-fixing the tanks in same position and re-connecting all water lines & float valve incl writing Letters "CLEANED ON DD.MM.YYYY" (i.e. Date of Cleaning of Tank) not exc. 50mm in height and testing complete complete all as specified and as directed by Engr-in-Charge.

Material and Labour Cleaning and removing all Scales and dirts from inside of PVC water tanks, of capacity exc. 500 Litre and not exc. 1000 Litre, by scrubbing the deposits with Wire Brush, bleaching powder, etc, including re-fixing the tanks in same position and re-connecting all water lines & float valve incl writing Letters "CLEANED ON DD.MM.YYYY" (i.e. Date of Cleaning of Tank) not exc. 50mm in height and testing complete complete all as specified and as directed by Engr-in-Charge.

Supply and fixing in Rotational Moulded Polyethene Water Storage Tank, 500 Litre Capacity, Cylindrical, Vertical type with Closed Top, 3 layered, conforming to IS, hoisted and fixed in Position alongwith GI tank nipple and tank lid incl testing complete all as specified and directed by Engr-in-Charge.

Supply and fixing in repair Rotational Moulded Polyethene Water Storage Tank, 1000 Litre Capacity, Cylindrical, Vertical type with Closed Top, 3 layered, conforming to IS, hoisted and fixed in Position alongwith GI tank nipple and tank lid incl testing complete all as specified and directed by Engr-in-Charge.

Supply and fixing in repair Ball Valve 20mm dia (minimum Weight 210 Gram), high pressure of PTMT with epoxy coated Aluminium Rod and high density Plastic Ball, screwed for Iron Pipe or ,fixed complete all as specified and directed by Engr-in-Charge.

Supply and fixing in repairs 20mm bore dia Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe or fixed to CPVC pipes with solvent, fixed in repair complete all as specified and as directed by Engr-in-Charge.

Taking up or down Steel Tubing 15/20 mm bore (dia) with Fittings/ Connections, segregating Serviceable Pipes and Fittings/ Connections and keep in Safe Custody for re-use, complete all as specified and directed by Engr-in-Charge.

Supply and fixing for Chlorinated Polyethylene Chloride (CPVC) pipes 20 mm outside dia, SDR-11, having thermal stability for hot and cold water supply including all SDR-11 CPVC plain and brass threaded fittings (such as Bends, Elbows, Tees, Short Pieces, Connectors, Back - Nuts Caps, Plugs, Unions, Flange (core) & flange (ring), reduction Tee, reducing socket, Male & female threaded socket, tank connector etc) fixed / laying on walls, ceilings or in floors etc. with suitable size MS clamp of spacing 1.00 mtr etc pipe line complete all as specified and directed by Engr-in-Charge.

Supply and fixing Chlorinated Polyethylene Chloride (CPVC) pipes 25 mm outside dia, SDR-11, having thermal stability for hot and cold water supply including all SDR-11 CPVC plain and brass threaded fittings (such as Bends, Elbows, Tees, Short Pieces, Connectors, Back - Nuts Caps, Plugs, Unions, Flange (core) & flange (ring), reduction Tee, reducing socket, Male & female threaded socket, tank connector etc) fixed / laying on walls, ceilings or in floors etc. with suitable size MS clamp of spacing 1.00 mtr etc pipe line complete all as specified and directed as directed by Engr-in-Charge.

Supply and fixing in repair PVC (SWR) 110mm bore (dia) Soil, Waste and Ventilating Pipe, single socketed, in any length with PVC Joints, with or without Ears, fixed to Walls and Fixed, complete all as specified and directed by Engr-in-Charge.

Supply and fixing in repairs PVC (SWR) Bend 110mm bore (dia), any radius with Access Door, etc. jointing with Solvent Cement and Fixed-in-repairs, complete all as specified and as directed.

Removing of old roof treatment/covering including brick tiles/concrete tile of any thickness, mud puska /PCC, mud plaster and water proofing treatment any number of layers or thickness including uprooting of grass/trees if any etc of any description upto RCC roof slab and cleaning the surface including flashings and junction of parapets, etc with wire brushes and water to the entire satisfaction of Engineer-in-charge and removal of debris and disposing outside MOD area complete all as specified and as directed by Engr-in-Charge. (NOTE: Debris shall be disposed off outside AF land by contractor under his own arrangement and rate quoted by contractor is deemed to be inclusive of the disposal outside AF land.

Demolition of unreinforced cement concrete on roofs, floors (other than ground floors), beams, staircases, landing, chajjas and similar suspended work complete all as specified and as directed.

Material and Labour for PCC 1:2:4 Type B-0 (using12.5 mm graded stone aggregate) as in padding over roof slab laid to slope finished even and smooth, roof kerbs, rounded or chamfered on edges complete all as specified and directed by Engr-in-Charge.

Material and Labour for 10 mm thick screed bed in cement mortar 1:4 over roof mixed with water proofing compound as per manufacturer's instruction complete all as specified and directed by Engr-in-Charge. NOTE: WPC will be Measured and Paid under appropriate Item.

Material and Labour for cleaning all the dust and loose material by brush/blower/grinder including cutting and removal of vegetation/ plantation/shrubs from the concrete/ plastered/ wall surfaces and work upto four storey including safety precaution, scaffolding and Material and Labour for preparation of roof top surfaces, providing and applying single component elastic cold applied polyurethane modified acrylic roofing system, co elastic technology (CET) based on modified polyurethane and fully fibre reinforced, having Sun Reflectivity index (SR) of 109 on top of concrete roof surfaces. All cracks up to 3 mm at corner joints, channel and parapets should be treated with crack seal. Applying three coats including one coat of primer of ShaliUrethane BTD/ Sikalastic 560/ smart care damp proof-ultra having coverage @ min 0.75kg/m2 and dilution up to 10% and laying reinforced fiber net and applying two coats (without dilution) of shaliUrethane BTD/Sikalastic 560/smart care damp proof ultra @ total consumption 2 kg/m2 in two coats for maintaining minimum dry film thickness 1.5mm and elongation at break of free film of approx 350%. Make: STP/Sika/Asian paint or equivalent as approved by GE. Note :- 1. The materials shall be applied with brush or roller, complete in all respect as per the direction of Engineer-in-charge/Consultant (Note : 6 Hrs interval between two coat will be maintained). All auxiliary and accessories involved during application should be supplied by single manufacturer as a part of system. 2. Application of water proofing treatment will be done by Authorised Applicator only

Material and Labour for Heat Reflective tiles of size 300x300x8-10mm with grey cement and no pigment set jointed and pointed in neat cement slurry laid over with and incl 20mm thick screed bed in cement mortar 1:4 mixed with water proofing compound complete all as specified and directed. NOTE : Cost of Cement Screed Bed & WPC shall deemed to be included in the Quoted Unit Rate by biddes.

Taking down Cement Plaster including raking out Joints, hacking for Key, scrubbing down with Water and removing Debris, etc. to Outside MD/AF Land, complete all as specified and as directed by Engr-in-Charge.

Material and Labour for Rendering 5.0mm thick in Cement Mortar 1:3 on Concrete Surfaces as in Ceiling, etc., Plastered Surfaces finished Even and Smooth, without using Extra Cement, complete all as specified and as directed by Engr-in-Charge.

Material and Labour for preparing Newly Plastered Surfaces of Ceiling and applying Three Coats of White Wash, complete all as specified and as directed by Engr-in-Charge.

Material and Labour for Rendering (External) 15mm thick in CM 1:4 on Brick Walls or on Concrete Surfaces, mixing WPC as per manufacturers instructions, Plastered Surfaces finished Fair and Even, , upto four storey height including necessary scaffloding complete all as specified and directed by Engr-in-Charge. NOTE: WPC will be Measured and Paid under appropriate Item.

Supply only Integral Water Proofing Compound, conforming to IS and/or as approved, complete all as specified and as directed by Engr-in-Charge.

Material and Labour for preparation of newly plastered/putty surfaces and finished with two coats of exterior acrylic emulsion paint (having anti-dust & anti-algae properties) duly mixed with stainer to achieve approved Tint/shade (in camouflage pattern) over a coat of suitable exterior primer, applied with rollers to new wall surfaces of any description, over 10cm width or girth not otherwise described, as per manufactuirer's instructions, upto 4 storey height complete all as specified and directed by Engr-in-Charge.

Demolition Brick work built in Cement Mortar and in any Position including all Quoins, Arches and Pillars, etc., complete all as specified and as directed by Engr-in-Charge.

Material and Labour Brick Work with Sub-Class ‘B’ Bricks (Old Size Bricks), Straight or Curved on Plan exc. 6.0 Metre mean Radius, built in Cement Mortar 1:6, complete all as specified and as directed by Engr-in-Charge.

Demolition of Cement Concrete (Reinforced) of Roof, Floor (other than Ground Floor) Beam, Staircase, Landings, Chajjas and similar work (reinforcement cut as required to facilitate demolition) and removing debris, etc. to Outside MOD Land, complete all as specified and directed by Engr-in-Charge. (NOTE: Old reinforcement shall be measured under Sch of Credit)

Material and Labour for Reinforced Cement Concrete 1:2:4 type B0 (12.5mm graded stone aggregate) as in Slabs supported on walls, beams and columns in floors, roofs, landings, balconies, canopies, dec slabs and in shelves and the like complete all as specified and directed by Engr-in-Charge. (NOTE: MS reinforcement & Formwork shall be measured and paid seperately)

Material and Labour for Formwork to fair finished surfaces soffits of suspended slabs such as roof slabs, floor slabs, landings and similar work complete all as specified and as directed by Engr-in-Charge.

Use & waste of Formwork to edges of concrete flats, treads, breaks in floors, window cills, concrete railings, openings in concrete walls, floor and roofs n exc 20 cm wide and sides of RCC/ PCC bands in walls, horizontal or sloping and similar work exc 10cm but n exc 20cm wide etc complete all as specified and directed by Engr-in-Charge.

Material and Labour TMT Bars 10mm dia and over, 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 0.90 mm dia, complete all as specified and as directed by Engr-in-Charge.

Dismantling wrought iron or mild steel work of any description not otherwise provided for complete all as specified and directed by Engr-in-Charge.

Supply and fixing for mild steel framed work such as grills, gratings, sunshade etc. with ends of bars shouldered and/or riveted, or forged into spikes; framed guard bars; barred iron doors; ladders; framed balusters; walk ways; railings; framework of water tanks and similar work conforming to Fe.290.Gde-E-165 etc complete all as specified and directed by Engr-in-Charge.

Supply and fixing for for Steel work in tubular/angular trusses including special shaped washer etc. complete using ERW or induction butt welded tubes conforming to I. S.1161-1979 grade St.-240, Complete all as specified and as directed by Engr-in-Charge.

Dismantling of Asbestos cement/Translucent (corrugated, semicorrugated, plain, etc.) sheets in roof/wall coverings, complete all as specified and as directed by Engr-in-Charge.

Supply and fixing for 0.50mm thick TCT (Total coated thickness) precoloured galvalume sheets with minimum base metal thickness of 0.45 mm single skin high rib/multi rib profile galvalume sheeting having 1000-1020 mm width and 28-30 mm high crest @ maximum 250-255 mm pitch(centre) with sheets manufactured out of 0.50 mm this TCT (Total Coated thickness) high tensile galvalume sheets having tensile strength 550 MPA with 18-20 micron top coat over 5 micron primer and 8-10 micron alkyld backer zinc aluminium alloy AZ-150, sheets having a dip metallic Zinc (43.5%), Aluminium (55%) & Silicon(1.5%) with total mass coating of 150gms/sqm on both sides, having wide pan with minimum 3 small stiffening ribs for effective water sheding and special male/female ends with full return legs for purlin support and fixed as per existing profile of roof complete all as specified and directed by Engr-in-Charge.

Supply and fixing for for Pre- painted galvalume aluminum zinc coating GI based plain steel sheet 0.50mm thick of an colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws complete all as specified and as directed by Engr-in-Charge.

Dismantling of Plain or corrugated steel sheeting, any gauge, thickness in roof coverings, complete all as specified and as directed by Engr-in-Charge.

Supply and fixing for Galvanised, corrugated mild steel sheeting with two corrugations side lap, fixed with L-type or J-type or cranked hook bolts, in roofs, (height more than 15Mtr Approx) with grade of zinc coating 275 complete all as specified and as directed by Engr-in-Charge.

Dismantling boarding, roofing sheets any description, fixed in any position, with screw complete all as specified and as directed by Engr-in-Charge.

Supply and fixing for 2mm thick corrugated UV coated diamond cut coloured polycarbonate roofing sheet as in cladding/rooffing including necessary side lap fixed with coach screw and washer complete all as specified and as directed by Engr-in-Charge.

Material and Labour Providing, cement concrete 1:2:4 type B1 (20mm graded aggregate) as in coping complete all as specified and as directed by Engr-in-Charge.

Material and labour for new or previously untreated Steel and Iron Surfaces of any description, not otherwise described, over 10 Cm width or girth with and including applying two Coat of Synthetic Enamel Paint (First quality), over a coat of zinc chrome primer complete, including cleaning the surface complete all as specified and as directed by Engr-in-Charge.

Dismantling of Wall and ceiling boards (fibre, pulp, insulation, etc.) or insulation boards/slabs/ blankets, any thickness, including cover fillets including grid framework complete all as specified and as as directed by Engr-in-Charge.

Supply and fixing for GI Powder Coated Snap Grid Frame Work of size 600x600mm for False Ceiling with Supported and Hanging of Mild Steel Rod of ‘J’ Bolt including Provision for ceiling Board in Ceiling, fixed on Snap Grid, including hanging fixtures to ceilings complete all as specified and as directed by Engr-in-Charge. Note : Ceiling board will be measured speratetely.

Supply and fixing for 12mm thick mineral fibre core ceiling board/tiles for insulation and accoustic purposes, 600x600 mm in size, fixed with GI Snap Grid Frame Work with Steel Screws, complete all as specified and as directed by Engr-in-Charge.

Material and Labour for repairing spalled / damaged concrete surfaces in RCC members (slabs, beams, columns, ceilings, etc.) with polymer-modified repair mortar and associated materials, complete as directed by the Engineer-in-Charge. The work shall be executed in the following steps: (a) Step 1 (Marking and Cutting) :- Mark the damaged / spalled area in a regular shape (square or rectangular) and cut the edges to a depth of at least 10–15 mm using a chisel or mechanical cutter to expose sound concrete and reinforcement, avoiding feather edges. (b) Step 2 (Removal and Cleaning):- Remove all loose, delaminated, and unsound concrete. Clean the surface thoroughly using wire brushes, compressed air, or water jet to remove dust, laitance, and loose particles. (c) Step 3 (Cleaning of Reinforcement):- Expose the corroded reinforcement fully. Clean the steel thoroughly by mechanical wire brushing, rust remover, or other approved means to remove all scales and corrosion. (d) Step 4 (Application of Rust Remover):- Apply rust remover chemical to the cleaned reinforcement bars using a brush and allow it to react as per manufacturer’s instructions. (e) Step 5 (Zinc Rich Primer on Reinforcement):- After cleaning with water and drying, apply one coat of zinc-rich primer to the reinforcement bars to prevent further corrosion. Allow adequate drying as per manufacturer’s recommendations. (f) Step 6 (Bonding Coat):- Apply a bonding coat of approved bonding agent (e.g., polymer latex / epoxy bonding agent) on the prepared concrete surface. The repair mortar shall be applied while the bonding coat is still tacky. (g) Step 7 (Application of Repair Mortar) : Rebuild the damaged area with polymer-modified repair mortar (pre-packed, non-shrink, approved brand) or micro-concrete for larger or deeper repairs, restoring the original profile and level. (h) Step 8 (Fixing of Chicken Mesh) : Provide and fix chicken wire mesh (12.5 mm × 22 SWG, hexagonal type) over the affected area, fixed with nails or screws at suitable spacing to ensure proper anchorage with the surface. contd....

Material and Labour in repair fixing HDPE / LLDPE Lid of suitable size for PVC Water Storage Tank of capacity 500 Ltr to 1000 Ltr, hinge or threaded type for easy opening and closing etc fixed in repairs complete all as specified and directed by Engr-in-Charge.

Supply and fixing for PVC Clamps for securing 110mm dia bore PVC (SWR) pipe including screws/nuts and securing with wall or roof complete all as specified and directed by Engr-in-Charge.