REPAIRS TO ASHLAR FACE BASALT WALL CLADDING AND CERTAIN BR WORKS AT CENTRAL INSTITUTE AND OTM BLDGS IN ZONE B AREA AT NDA KHADAKWASLA

Amount

M&L for preparation, thorough cleaning and removal of loose screed/ pointing/ rendering from stone wall surfaces and repairing of the damaged portions of walls, rain water outlet/spout, by using non shrink grout after preparing the surface using sand paper and for application of Nitobond SBR Latex as a priming coat (by Fosroc or equivalent of approved make) on the area with mixing and pouring Conbextra GP2, high strength grout (by Fosroc or equivalent of approved make) with clean and cool water at ratio of 0.16 on the prepared surface to make the bore packing water tight. The rate shall include necessay materials, tools and application procedure as per manufacturer's specification. Note: (i) All works to be execute by the authorised applicator as per manufacturer specification. (ii) Ten years guarantee to be given by the contractor, any leakage or seepage issue to be addresed up to 10 years gurranty period with free of cost. (iii) Necessary safety precaution to be taken by the contractor. (iv) The height at which work is to be carried out is upto 25mtr, (v) Necessary scaffolding required deemed to included in rates quoted by the bidder.

M&L for preparing of the surface, removal of loose particles, damaged portions and jet wash of the complete area. Opening the damaged joints, grinding those marked joints, to match the existing surfaces i.e. sponge plaster etc. where ever if applicable, by applying bonding agent Nitobond AR, further filling it with polymer repair dual shrinkage repair mortar Renderoc SP40 (by Fosroc or equivalent of approved make). Providing and laying Renderoc SP 40- shrinkage controlled polymer modified single component, alkaline resistant fibre reinforced, thixotropic, cementitious patch repair mortar supplied in 25 kg moisture resistant bag when mixed with clean water at w:p ratio 0.18, achieves compressive strength (BS 1881 Pt.116) -> 20 Mpa at 1 day & > 45 Mpa at 28 days, Tensile Strength(BS 6319 Pt.7) > 2.5 Mpa at 28 Days, Flexural Strength(BS 6319 Pt.3)>7 Mpa at 28 days, Drying shrinkage to ASTM C 157-93, 28 days < 1000 microstrain capable of applying upto 50 mm thickness in single layer. Renderoc SP 40 shall have CE (CE-29842) marking and compliance according to Construction Products Directive 89/106/EEC (CPD). Note: (i) All works to be execute by the authorised applicator as per manufacturer specification. (ii) Ten years guarantee to be given by the contractor, any leakage or seepage issue to be addresed up to 10 years gurranty period with free of cost. (iii) Necessary safety precaution to be taken by the contractor. (iv) The height at which work is to be carried out is upto 25mtr, (v) Necessary scaffolding required deemed to included in rates quoted by the bidder.

M&L for Providing and application of protection system to external stone/concrete after proper surface preparation and cleaning to remove any laitance, algae, fungal, foreign materials using suitable repairing method followed by uniform application of Nitocote SN522- Colourless, (by Fosroc or equivalent of approved make) ready to use, silicone resin solution using suitable brushing or spraying at recommended coverage etc. complete including all tools and tackles as per manufacturers specification and as directed by Engr-In-Charge. Product shall be complies with BS 6477-92 Class A and Class B as silicone-based water repellent. Note: (i) All works to be execute by the authorised applicator as per manufacturer specification. (ii) Ten years guarantee to be given by the contractor, any leakage or seepage issue to be addresed up to 10 years gurranty period with free of cost. (iii) Necessary safety precaution to be taken by the contractor. (iv) The height at which work is to be carried out is upto 25mtr, (v) Necessary scaffolding required deemed to included in rates quoted by the bidder.

Chipping of unsound /weak concrete materials from slabs, beams, columns, lintel, chajja, fin , facia etc. by any means as directed by engr-in-charge including tapering all edges, making square shoulders of cavities air or sand blasting etc and cleaning of exposed concrete surface of lightly picking materials by air blasting or sand blasting incl foreign matrials, loose concrete/aggregate etc and disposal of all debris out of MOD land and complete all as specified and as directed by Engr-in-Charge Note: (i)work shall be executed upto 20m height of building (ii) work shall be executed upto 30mm average thickness for slabs/Chajja

M&L including Cleaning of exposed existing rusted reinforecement with wire brush, carrying out application of 2 coats of rust coverting primer, suitable time interval to be maintained in between 2 coat application according to maufactures instructions complete all as specified and as directed.

M&L for introducing new reinforcement bars upto 12 mm dia for matching to existing structural stability in RCC beams, columns, lintel and slabs including power drilling holes of appropriate diameters in reinforced or plain cement concrete to a minimum depth of 150mm and upto 200mm including power drilling, fixing the reinforcement in position using epoxy, cleaning of loose dust by blowing air, sealing with epoxy cartridges etc all as specified and directed by Engr-in-charge. Note: (i) All works to be execute by the authorised applicator as per manufacturer specification. (ii) Ten years guarantee to be given by the contractor, any leakage or seepage issue to be addresed up to 10 years gurranty period with free of cost. (iii) Necessary safety precaution to be taken by the contractor. (iv) The height at which work is to be carried out is upto 25mtr, (v) Necessary scaffolding required deemed to included in rates quoted by the bidder.

Supply and application of Epoxy Zinc rich primer on the prepared steel surface by brush the primer shall have a minimium specific gravity 1.75 minimum weight film thickness/coat 40 microns and minimum adhesive bond strength with steel is 1.5N/mm2 complete all as specified and directed by Engr-in-charge. Make ; SIKA/FOSROC or equivalent of approved make. Notes :(i) The height at which work is to be carried out is exc 3mtr and n exc 20mtr, (ii) necessary scafolding required deemed to be included in rates quoted by the contractor.

M&L for providing single coat of epoxy bond adhesive of prepared non metallic surface (existing surface) and applying by brush all as per manufactures instruction/specification. The bonding agent shall have minimum compressive strength of 40 N/Sqmm and complete all as specified and directed by Engr-in-charge Make ; SIKA/FOSROC or equivalent of approved make. Note: (i) All works to be execute by the authorised applicator as per manufacturer specification. (ii) Ten years guarantee to be given by the contractor, any leakage or seepage issue to be addresed up to 10 years gurranty period with free of cost. (iii) Necessary safety precaution to be taken by the contractor. (iv) The height at which work is to be carried out is upto 25mtr, (v) Necessary scaffolding required deemed to included in rates quoted by the bidder.

Supply, mixing and application two component structural grade polymer modified reinstatement morter, where local spalling has taken place or shuttering is not possible. The morter can be applying in layers not exceeding 6mm thick in each layer in and upto any thickness in smaller vertical pockets and upto any thickness in horizontal applications. The mortar should have a minimium compressive strength 12N/mm2 in 1 day and 45N/mm2 in 28 days. Minimum flexural strength should be 8 N/mm2 in 28 days. A modified styrene butadience emulsion for use as a bonding aid and gauging liquid for cementious system to be mixed with cement slurry before the application of modified polymer mortar to be used @ 6 ltr/bag of cement. The bonding agent should have minimium compressive strength 24N/mm2. Minimum tensile strength 3.5N/mm2, minimium flexural strength 6.5N/mm2 complete all as specified and directed by the Engr-in-charge upto 25 mm average thickness Make :- Sika/Fosroc or equivalent as approved NOTE:- (i) Cement and sand morter in proportion of 1:2 graded coarse sand with polymer admixed in proportions approved by Engr-in-charge. (ii) All works to be execute by the authorised applicator as per manufacturer specification. (iii) Ten years guarantee to be given by the contractor, any leakage or seepage issue to be addresed up to 10 years gurranty period with free of cost. (iii) Necessary safety precaution to be taken by the contractor. (iv) The height at which work is to be carried out is upto 25mtr, (v) Necessary scaffolding required deemed to included in rates quoted by the bidder.

Demolition of cement concrete of any description and in any posn not otherwise specifically provided for complete all as specified and as directed.

Flat form works to sides and sofits of copings at Chajjas and Parapet walls of bldgs etc complete all as specified and as directed

M&L for Providing, cement concrete Type B-0, 1:2:4 (12.50 mm size graded stone aggregates) on Chajjas, roof kerbs in lintels upto 1.5m clear span, cills, steps; seismic and other similar bands, plinth courses, string courses, lacing courses, parapets and railings upto 60 cm in height, copings, kneelers, apex stones, bed plates, water troughs and the like including weathering, slightly rounded or chamfered angles and throating, mixed with fosroc as directed Note: (i) All works to be execute by the authorised applicator as per manufacturer specification. (ii) Ten years guarantee to be given by the contractor, any leakage or seepage issue to be addresed up to 10 years gurranty period with free of cost. (iii) Necessary safety precaution to be taken by the contractor. (iv) The height at which work is to be carried out is upto 25mtr, (v) Necessary scaffolding required deemed to included in rates quoted by the contractor.

M & L for 15 mm thick rendering on fair faces or brick work or concrete surfaces of ceiling of Chajjas in cement mortar 1:4 surface finished even and smooth (with using extra cement) upto 150mm height of wall complete all as specified and as directed. Note: (i) All works to be execute by the authorised applicator as per manufacturer specification. (ii) Ten years guarantee to be given by the contractor, any leakage or seepage issue to be addresed up to 10 years gurranty period with free of cost. (iii) Necessary safety precaution to be taken by the contractor. (iv) The height at which work is to be carried out is upto 25mtr, (v) Necessary scaffolding required deemed to included in rates quoted by the bidder.

Taking down and re-fixing of rainwater PVC (SWR) 110mm dia pipes as in single socketed in any length with rubber ring joints fixed to walls with heavy duty double sided clamp by interval not more than 2.00m Complete all as specified and directed.

S&F in repairs rainwater PVC (SWR) 110mm dia pipes as in single socketed in any length with rubber ring joints fixed to wallswith heavy duty double sided clamp by interval not more than 2.00m Complete all as specified and directed.

S G Enterprises (BID ID -3168715)

Tejas Enterprises (BID ID -3173318)

M/S P D TUPE (BID ID -3173626)