E TENDER FOR STRUCTURAL REPAIR AND RETROFITTING WORKS AT RLA COLLEGE NEW DELHI 110021

Providing, erecting, maintaining and removing temporary protective screens made out of specified fabric (Wooven PVC cloth) with all necessary fixing arrangement to ensure that it remains in position for the work duration as required by the Engineer-in-charge.

Providing and fixing double scaffolding system (cup lock type) on the exterior side of building/structure, upto 25 metre height, above ground level, including all necessary components and maintenance for the work duration.

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.

Chipping of unsound/weak concrete material from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or of approved make including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris (25 mm average thickness).

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Cleaning, passivation and protective coating to exposed reinforcement in RCC repairs: Providing and applying rebar anti-corrosion treatment to exposed/corroded reinforcement at spalled RCC locations, including: chipping/opening (paid separately) and cleaning of reinforcement to bare metal by wire brushing/mechanical cleaning; removal of loose rust/scale; wiping/cleaning of steel; application of approved rebar passivator / epoxy-based anti-corrosion protective coating (zinc-rich epoxy / rebar primer/passivating coat) in 2 coats with required drying time; ensuring full coverage all around bars; and making ready for subsequent bonding coat and repair mortar/micro-concrete. Complete as per manufacturer’s specifications and direction of Engineer-in-Charge

Dismantling/removal of existing leaking/corroded drainage (SWR/RWP) pipes ( 75-150 mm dia ) including: cutting pipes into manageable lengths, dismantling/removing existing clamps/fixtures, careful lowering/handling to avoid damage to RCC/masonry/finishes, stacking serviceable material separately and unserviceable material within premises as directed by Engineer-in-Charge; complete

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete above plinth level. (Thermo-Mechanically Treated bars of grade Fe-500D or more)

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete. Hot finished welded type tubes

Steel work welded in built up sections/ framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required. A)In gratings, frames, guard bar, ladder, railings, brackets, gates and similar works

Providing and fixing hard drawn steel wire fabric of size 75 x25 mm mesh or other suitable size wire mesh to be fixed & firmly anchored to the concrete surface by means of “L” shaped mild steel shear key welded with existing reinforcement including the cost of materials, labour, tool & plants as approved by Engineer-in-charge.

Centering and shuttering including strutting, propping etc. and removal of form for Suspended floors, roofs, landings, balconies and access platform

Repair to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sqm and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing mortar, including disposal of rubbish, all complete as per the direction of Engineer-In-Charge.

18 mm cement plaster in two coats under layer 12 mm thick cement plaster 1:5 (1 cement : 5 coarse sand) finished with a top layer 6 mm thick cement plaster 1:6 (1 cement : 6 fine sand). with 6mm groove at all RCC & Brick work Joints. (Junctions of all RCC and brick shall be provided with chicken wire mesh of 150 mm width on either side of the junction before plastering)

6 mm cement plaster of mix : 1:3 (1 cement : 3 fine sand)

Providing and applying white cement based putty of average thickness 1 mm, of approved brand and manufacturer, over the plastered wall surface to prepare the surface even and smooth complete.

Applying priming coats with water thinnable cement primer on wall surface having VOC content less than 50 grams/litre.

Wall painting with acrylic emulsion paint, having VOC (Volatile Organic Compound) content less than 50 grams/ litre, of approved brand and manufacture, including applying additional coats wherever required, to achieve even shade and colour. (Two coats)

Finishing walls with Acrylic Smooth exterior paint of required shade: New work (Two or more coat applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 0.90 litre/10 sqm)

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade: Two or more coats on new work over an under coat of suitable shade with ordinary paint of approved brand and manufacture.

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