NIT 25/BSNL/CC/MYS/202425

Amount

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)

Demolishing R.B. 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.

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.

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.

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 :

a) 1:1½:3 (1 cement : 1½ coarse sand(zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources).

Providing and fixing 1mm thick M.S. sheet door with frame of 40x40x6 mm angle iron and 3 mm M.S. gusset plates at the junctions and corners, all necessary fittings complete, including applying a priming coat of approved steel primer.

a) Using M.S. angels 40x40x6 mm for diagonal braces

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 on wall face unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i) Single socketed pipes. (i)Single socketed pipes.

a) 110 mm diameter

Providing and fixing on wall face unplasticised - PVC moulded fittings/accessories for unplasticised Rigid PVC rain water pipes conforming to IS 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion.

a) Bend 87.5°

i) 110 mm bend

b) Shoe (Plain)

i) 110 mm Shoe

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.

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

a) 20 mm cement plaster

Extra for providing and mixing water proofing material in cement plaster work in proportion recommended by the manufacturers.

18 mm cement plaster in two coats under layer 12 mm thick cement plaster 1:5 (1 cement: 5 coarse sand) and a top layer 6 mm thick cement plaster 1:3 (1 cement: 3 coarse sand) finished rough with sponge.

Repairs to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sq.meters and under, including cutting the patch in proper shape, raking out joints and preparing and plastering the surface of the walls complete, including disposal of rubbish to the dumping ground, all complete as per direction of Engineer-in-Charge.

a) With cement mortar 1:4 (1 cement : 4 fine sand)

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 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 at form 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, onnection 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.

Dismantling / Removing corroded steel frame work consisting of I sections, channels pipes etc provided for AC unit including cutting, dehoisting, stacking in position etc complete and as per the direction of EIC

Providing and fixing ready made GI slotted wall bracket with 8 mm GI -U bolt with nuts and washer including fixing wall bracket on wall/ RCC surface by 10 mmx100 mm expansion anchor bolts etc. complete as per the direction of engineer-in-charge for fixing up to 110 mm rain water pipes

Grading roof for water proofing treatment with Cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 10 mm nominal size) mixing integral water proofing compound (200 ml liquid compound for 50 kg of cement or as specified by manufacturer) finishing top surface with a floating coat of neat cement including cement slurry mixed with integral water proofing compound (200 ml liquid compound for 50 kg of cement or as specified by manufacturer) to match the existing treatment, marking a grid of 300mmx300mm in chequrred pattern in finished surface complete as directed. (rate includes necessary scaffolding/ladder arrangement)

Water proofing treatment over RCC surface with Zycosil / equivalent water profing solution [1 Litre Zycosil / equivalent & 20 litres of water stirred first & 2 litres of Zycoprime / equivalent added and stirred (total 23 litres)] till it meats the saturation level and testing as per RIELM or by water drops test in which water drop do not absorb but drop remains or rolls.