Replacement of existing roof sheeting with metal roofing sheets and Structural steel painting works for RC Auditorium in BHEL Township

(15.28) Dismantling roofing including ridges, hips, valleys and gutters etc., and stacking the material within 50 metres lead of: (15.28.2) Asbestos cement sheet

(15.6) Extra for scrapping, cleaning and straightening reinforcement from R.C.C. or R.B. work.

(15.17) Dismantling steel work in single sections including dismembering and stacking within 50 metres lead in: (15.17.2) Channels, angles, tees and flats

(15.18) Dismantling steel work in built up sections in angles, tees, flats and channels including all gusset plates, bolts, nuts, cutting rivets, welding etc. including dismembering and stacking within 50 metres lead.

(15.3) Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge.

(15.7) 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.. (15.7.4) In cement mortar

(CVL-14.72)_(CVL-14.72)Providing and fixing double scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40 mm dia M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S.clamps and M.S. staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it there after .The scaffolding system shall be stiffened with bracings, runners,connection with the building etc wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and Approval of Engineerin-charge .The elevational area of the scaffolding shall be measured for payment purpose .The payment will be made once irrespective of duration of scaffolding. Note: - This item to be used for maintenance work judicially, necessary deduction for scaffolding in the existing item to be done.

(13.50) Applying priming coat : (13.50.3) With ready mixed red oxide zinc chromate primer of approved brand and manufacture on steel galvanised iron/steel works

(13.100) Painting with aluminium paint of approved brand and manufacture to give an even shade : (13.100.1) One or more coats on old work.

(12.50) Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-Charge) of total coated thickness 0.50mm (base metal of minimum 0.45mm 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 /self 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.