REPAIR TO ROOF TREATMENT OF VARIOUS OTM ACCN AT AF STN CHANDIGARH

Amount

Demolition of (un-reinforced) cement concrete of any description or as roof padding and covering concrete with app membrane/ rendering on parapet wall /roof treatment and in any position not otherwise specifically provided for and remove all the debris out of MoD land, complete all as specified and as directed.

Dismantling cement concrete /brick tiles or terracing tiles, single layer on roof including segregating and stacking serviceable brick tiles and removal of unserviceable brick tiles / brick bats and rubbish outside defence land, complete all as specified and directed.

Taking down existing mud plaster / tarfelt including roof treatment bedding on brick or stone surfaces on roof /parapet wall, etc including raking out joints, hacking for key, scrubbing down with water, etc. complete all as specified and as directed.

Demolition of mud phuska on roofs any thickness including mud plastering (whether full thickness removed or only a part thereof) and removal to a distance exceeding 100 metre, complete all as specified and as directed.

M&L roughening of surfaces of old concrete floor/slab by wire brushing, sweeping, cleaning and washing down to remove all loose dust etc, and brushing neat cement slurry @ 3.00 kg/Sqm on floor/roof surface, complete all as specified and as directed.

M&L for plain cement concrete (1:2:4) type B-1 using 20mm graded crushed stone aggregate, as in padding on roof to maintain desired slope, roof kerb, benching and the like, finished even and fair complete all as specified and directed.

M&L for screed bed or bedding layer of mortar 15 mm thick in cement mortar (1:6) for laying floor finishes complete all as specified and directed.

M&L for rendering 15 mm thick on brick or concrete surfaces in cement mortar (1:4) mixed with and including water proofing compound @ 3% weight of cement or as per manufacturer's instructions and finishing the surface even and fair without using extra cement complete all as specified.

M&L for cleaning the new or old plastered or concrete surfaces and applying water proofing treatment to roof horizontal surfaces consisting as under:- (a) Applying evenly a coat of bituminous primer conforming to IS-3384:1986 @ 0.30 litre/sqm including preparation of roof surfaces (b) A layer of minimum 3mm thick APP polymeric membrane of weight not less than 3.60 kg/sqm, reinforced with polyester non-woven fabric (weight not less than 160gm/sqm), duly sealed at over laps & joints with flame (by torch application) all as per manufacturer’s instructions, complete all as specified and directed. (c) Finally finished with a coat of bitumastic aluminium paint over the membrane.

M&L for cleaning the new or old plastered or concrete surfaces and applying water proofing treatment to vertical surfaces on roof consisting as under including removal of old existing membrane:- (a) Applying evenly a coat of bituminous primer conforming to IS-3384:1986 @ 0.30 litre/sqm including preparation of roof surfaces. (b) A layer of minimum 3mm thick APP polymeric membrane of weight not less than 3.60 kg/sqm, reinforced with polyester non-woven fabric (weight not less than 160gm/sqm), duly sealed at over laps & joints with flame (by torch application) all as per manufacturer’s instructions, complete all as specified and directed. (c) Finally finished with a coat of bitumastic aluminium paint over the membrane.

M&L 40 mm thick brick tiles laid on roof and including 15 mm thick screed bed in CM (1:6) and jointed grouted flush in cement mortar (1:3) mixed with 5% of crude oil by weight of cement over and complete all as specified and directed.

All as per serial item No 11 above (but except brick tiles), complete all as specified and directed. Note : (i) Old serviceable ties as obtained from Serial item No 02 above shall be reused. (ii) The cost of cleaning and washing of brick tiles for re-use, shall be deemed to be included in the unit rate quoted by the tenderer.

S&F in repairs 110mm bore PVC (SWR) pipes single socketed in any length with rubber ring joints fixed to wall and making good the mouth of rain water pipe complete all as specified and directed.

S&F 110mm bore PVC (SWR) bends any radius, fixed with solvent cement in any position as per site requirement complete all as specified.

M&L disconnecting existing water tanks of capacity exceeding 250 litres but not exceeding 500 litres, draining out of water, setting aside (or lowering if required) for repair/ cleaning and removing accumulated sludge/ dirt scales from bottom & sides and from mouths of circulating pipes of service tanks located on roof of building and disinfecting the tank using bleaching powder to make the tank bacteria free, writing by stencil date of cleaning of tank with white synthetic enamel paint on black ground ‘Cleaned on (date)’; height of words 100mm and hoisting if required, refixing and reconnecting in position after cleaning complete all as specified and directed.

M&L disconnecting existing water tanks of capacity exceeding 500 litres but not exceeding 1000 litres, draining out of water, setting aside (or lowering if required) for repair/ cleaning and removing accumulated sludge/ dirt scales from bottom & sides and from mouths of circulating pipes of service tanks located on roof of building and disinfecting the tank using bleaching powder to make the tank bacteria free, writing by stencil date of cleaning of tank with white synthetic enamel paint on black ground ‘Cleaned on (date)’; height of words 100mm and hoisting if required, refixing and reconnecting in position after cleaning complete all as specified and directed.

S&F rotational moulded polyethylene double layered 500 liters water storage tanks cylindrical vertical with closed top hoisted and fixed in position including ball valve 15 mm bore, disconnecting, and taking down old tank complete all as specified and directed.

S&F rotational moulded polyethylene double layered 1000 liters water storage tanks cylindrical vertical with closed top hoisted and fixed in position including ball valve 20 mm bore, disconnecting, and taking down old tank complete all as specified and directed.

S&F in repairs Ball valve, high pressure of PTMT with epoxy coated aluminium rod and high density plastic ball, ISI marked (Minimum weight 210 gms), screwed & suitable for iron pipe 20 mm bore, complete all as specified and directed.

S&F in repairs Ball valve, high pressure of PTMT with epoxy coated aluminium rod and high density plastic ball, ISI marked (Minimum weight 142 gms), screwed & suitable for iron pipe 15 mm bore, complete all as specified and directed.

S&F in repairs 20mm Gun metal, globe or gate valve, with iron wheel head screwed both ends for iron pipe and fixed complete all as specified and directed.

Taking up or down steel tubing and connections, size 15mm bore including cleaning for refixing or removal to stores, complete all as specified and directed.

Taking up or down steel tubing and connections, size 20mm bore including cleaning for refixing or removal to stores, complete all as specified and directed.

M&L galvanised mild steel tubing 15mm bore 'medium grade' with all fittings and fixed complete to wall and ceiling or laid under floor including cutting existing steel tubing & screwing, if required for alterations and additions complete all as specified and directed.

M&L galvanised mild steel tubing 20mm bore 'medium grade' with all fittings and fixed complete to wall and ceiling or laid under floor including cutting existing steel tubing & screwing, if required for alterations and additions complete all as specified and directed.

M&L for Cleaning the junction/surface and made free from dirt, foreign particles, laitance followed by grinding all protrusions to make junction/surface modulated. Thereafter, inspection for cracks on the junction/surface caused by thermal expantson contraction. Making of Gollas at all the corners with Polymer modified mortar(1:4 Cement:sand with 3.5% Acylic of cement weight ) including finishing with mortar/ micro concrete/ general purpose grout as recommended proportionally as per recomendation of manufacturer. Make- Asian Paints SmartCare/ Thermax/Grace Note:The application should be done by company's authorised applicator.Company back warranty of 15 years is to be given by company.

M&L for Cleaning the Horizontal and vertical surface and made free of dirt, foreign particles, laitance followed by grinding all protrusions to make surface modulated. Thereafter, inspection for cracks on the surface caused by thermal expansion contraction. Cutting the grooves with suitable cutter machine in "v" groove filled with Repair mortar/Micro concrete/General purpose grout as recommended proportionally as per recommendation of manufacturer. Supplying and applying High performance Hybrid Polyurea elastomeric waterproofing coating cold applied of spray applied liquid membrane with an elongation of 500% and tensile strength of 11-13 N/mm2 as per ASTM D 2370, crack bridging ability of 3.5 mm as per ASNZ 4548, shore A Hardness of min. 60 as per ASTM D 2240 having . The system includes final base preparation, epoxy primer application of 1;1(resin:hardner) with 100 % water dilution and application of Hybrid polyurea polyurethane in two coats in 6 hrs interval at a total min consumption of 1.5 kg per Sqm , etc.The application should be done by company's authorised applicator. Graco sprayer by a company authorised applicator. Company back warranty of 15 years is to be given by company. High performance Hybrid Polyurea elastomeric waterproofing coating of Smartcare Ultron. Resin is one of the component of ultron Primer, which is two components water based epoxy system, it is classified as SR-B2, 0 according to EN 13813, having properties like color of pale yellow, viscocity 900mPa.s, density 1.15kg/l and adhesion of >3N/mm2. Hardener is one of the component of PU Magnum Primer, which is a two component water based epoxy system, It is classified as SR-B2, 0 according to EN 13813, having properties like color of pale yellow, viscocity 37000mPa.s, density 1.08kg/l and adhesion of >3N/mm2. Make- Asian Paints SmartCare/ Thermax/Grace

M/s Bhanu Enterprises

M/S MATLOOB AHMED

M/s Bhagwati Enterprises

jmv engineers

M/S GOYAL ASSOCIATES