Complete replacement of top mortar layer of Bramhgupta terrace and application of elastomeric liquid waterproofing membrane at Bramhgupta Hostel, TIFR Housing Complex, Mumbai

Amount

CONCRETE WORK

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor etc., up to floor five level, excluding the cost of centering, shuttering and finishing :

1:2:4 (1 Cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Extra for addition of synthetic Polyester triangular fibre of length 12mm, effective diameter 10-40 microns and specific gravity of 1.34 to 1.40 in cement concrete/RCC/Flooring/water retaining structures by using 125gms of synthetic Polyester triangular fibre for 50 Kg cement used as per directions of Engineer-in-Charge.

FLOORING

Cement concrete flooring 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate) finished with a floating coat of neat cement, including cement slurry, but excluding the cost of nosing of steps etc. complete

40 mm thick with 20 mm nominal size stone aggregate

DISMANTLING AND DEMOLISHING

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.(Plaster means the cement mortar layer above bick bat layer.) Note: Contractor will be solely responsible for lifting and shifting of any kind of Debris genrated at site; while carrying out this work to BMC dumping yard by all necessary means.

WATER PROOFING

Providing and applying fibre reinforced elastomeric liquid water proofing membrane with resilient acrylic polymers having Sun Reflectivity Index (SRI) of 105 on top of concrete roof in three coats @10.76 litre/ 10 sqm. One coat of self-priming of elastomeric waterproofing liquid (dilution with water in the ratio of 3:1) and two coats of undiluted elastomeric waterproofing liquid (dry film thickness of complete application/system not less than 500 microns). The operation shall be carried out after scrapping and properly cleaning the surface to remove loose particles with wire brushes, complete in all respect as per the direction of Engineer-in-Charge.

Providing and applying crystalline mortar by mixing in the ratio of 4.5 : 1 (4.5 parts crystalline mortar : 1 part water) for the treatment of faulty construction joints, cracks, tie rod holes and spalled & honeycombed surface of RCC underground structures like basement, water tanks, bridge deck etc. to ensure water tightness. The crystallie mortar shall conform to the EN 1504-3 having compressive strength Class R4 ≥45 MPa and adhesive bond strength Class R3 ≥1.5 MPa. The work shall be carried out all complete as per specification and the direction of the engineer-in-charge. The product performance shall carry guarantee for 10 years against any leakage.

For sealing cracks and faulty construction joints, routed out/making U-shape groove size 25x25mm and then primed the area with integral crystalline slurry @0.05kg/running metre and while the surface is tacky filled the groove upto surface with crystalline mortar @1.50kg/running metre. Once crystalline mortar is touch dry then finally applied two coats of integral crystalline slurry @0.05kg/running metre per coat.

PART 'B" Any unforeseen item not covered above, executed from CPWD Delhi Schedule of Rates 2018 upto a base value of Rs. 1,00,000/- Hint: Bidder is supposed to quote rate for this item in column (green) at value which is at a certain percentage above or below the rate of DSR 2018. For e.g. if the estimated rate is Rs. 1,00,000/- then bidder should quote rate of Rs. 1,10,000/- incase he intends item in this part to be paid at the rate of 10% above DSR 2018 or Rs. 90,000/- incase he intends item in this part to be paid 10% below the DSR 2018 The value given in the rate for this item shall be used to derive the rate to be paid for the item from DSR 2018

S N CONSTRUCTION

Venus Enterprises

Bombay Construction

KUMAWAT INFRASTRUCTURE

Konam Enterprises

Verma Traders

DEEPAK ENTERPRISES