20/NIT/BSNL/CD/MYS/2024-25

Amount

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge..

a) In cement mortar

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge.

a) Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

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.

Cement plaster 1:3 (1 cement: 3 coarse sand) finished with a floating coat of neat cement.

a) 20 mm cement plaster

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.

a) Electric resistance or induction butt welded tubes.

Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-Charge) of total coated thickness 0.50 mm (base metal of minimum 0.45 mm thickness with total coating thickness of 0.05mm) with zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 metre or as desired by Engineer-in-charge. The sheet shall be fixed using self drilling /seIf tapping screws of size (5.5x 55 mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.

Removing dry or oil bound distemper, water proofing cement paint and the like by scrapping and sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete

Distempering with FIRST QUALITY acrylic distemper(ready mixed) having VOC content less than 50gms /litre of approved brand and manufacture& of required shade & colour all complete to give an even shade & colour :

a) New work (two or more coats) over and including water thinnable priming coat with cement primer having VOC content less than 50gms /litre

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade :

a) Two or more coats on new work.

Providing and fixing expansion hold fasteners on C.C. /R.C.C. /Brick masonry surface backing including drilling necessary holes and the cost of bolt etc complete. Wedge expansion type

a) Fastener with threaded dia 12 mm

Providing and fixing mild steel round holding down bolts with nuts and washer plates complete.

Renewing glass panes, with putty and nails wherever necessary including racking out the old putty:

a) Float glass panes of nominal thickness 4 mm (weight not less than 10kg/sqm).

Cleaning of the surface area of the terrace by using pressure pump including removing the algae & fungi & scrubbing thoroughly with wire brush etc. and pressure washed with water. etc complete all as directed by Engineer-in-Charge: