Bharat Sanchar Nigam Limited Tender

Sub-Head : Reinforced Cement Concrete

Reinforced cement concrete work in beams, suspended floors, roofs having slope up to 15° landings, balconies, shelves, chajjas, lintels,bands, plain window sills, staircases and spiral stair cases above plinth level up to floor five level, excluding the cost of centering, shuttering,finishing and reinforcement with 1:1.5:3 (1 cement : 1.5 coarse sand(zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

Centering and shuttering including strutting, propping etc. and removal of form for :

Lintels, beams, plinth beams, girders, bressumers and cantilever

Columns, Pillars, Piers, Abutments, Posts and Struts

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

Smooth finishing of the exposed surface of R.C.C. work with 6 mm thick cement mortar 1:3 (1 Cement : 3 fine sand).

Sub-Head : Steel Work

Fabrication & Supplying at site Hot dip Galvanized steel tower materials with mass of zinc coating of 610 gms/Sqm ( 85 micron thickness) consisting of Pipes ,angles, flats, bars, gusset plates, climbing ladders, Antenna Mounts & fixtures, tower base plates, base angle frames, connecting plates, bolts & nuts including foundation/anchor bolts & nuts (Stainless steel bolts wherever required), spring washers etc. all fabricated including cutting,drilling holes,grinding, punching & welding etc. all complete as per approved drawing, specification and as per direction of Engineer- in -charge for erection of tower. Galvanizing of members of the tower shall conform to IS 4759-1996 and 2629-1985 and the bolts , nuts & plain washers shall be galvanized in accordance with IS: 1367 (Part XIII)- 1983 & Spring washers are to be electroplated coating of Zinc as per IS: 1573- 1986 or latest.The structural steel for tower shall confirm to IS 2062-2011,IS 3502-1994 &IS 808-1989. The structural steel section shall be of Primary producers like TISCO, SAIL, RINL, Jindal . Fabrication shall be as per IS 4757-1980,IS 800-2007. Nuts & Bolts of grade 5.6 and plain washers as per IS:6610-1972 & spring washer of type-B as per IS:3063-1994 shall be used. (The rate shall be inclusive of the cost of all materials ,labour charges,all leads and lifts , T&P, machines etc.for all the operations as above i/c carriage, loading, unloading, shorting & stacking of all galvanised steel materials from source of procurement to the site of work and all taxes as applicable.Nothing shall be paid extra on this account.)

Labour for lifting, hoisting, fixing and erection of 9.00 / 6.00 metre height Roof Top poles as per Drawing and Design with all its necessary components viz fixing foundation/anchor bolts & nuts including supplying & grouting wth chemical grouts wherever required, climbing ladders, platforms with railings, web guides, racks, cable trays,fixing up of Antenna mounts & fixtures at proper height etc. ,placing of base plates and fixing with HD nuts & bolts, spring washers and welding as and where ever required complete in all respect as per direction of Engineer-in-charge (The rate is inclusive of all operation involved in hoisting, erection of tower pole members & fixing with plates, nuts, bolts, spring washers & welding where ever required including hire and labour charges of tools, plants & machineries, insurance premium of labourers, life jackets, safety belts, helmets & all other necessary safety devices etc. and nothing will be paid extra on this account). The contractor will be held responsible for fulfilment & compliance of all the technical requirements of acceptance testing of the tower.

Sub-Head : Tower Work

Providing & earthing with GI earth plate 600 mm X 600 mm X 6 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and 25 mm dia meter G.I. watering pipe of 3.00 meter long etc. with charcoal/coke and salt as per direction of the Engineer-in-charge.

Providing and fixing 25 mm X 5 mm GI strip in 40 mm dia GI pipe from earth electrod including connection with GI nut, bolt, spring, washer , excavation and re-filling etc. complete as per direction of the Engineer-in-charge.

Providing and fixing 25 mm X 5 mm GI strip on surface or in recess for connection etc. for earthing as per direction of the Engineer-in-charge.

Providing and fixing LED aviation obstruction lamp with auto timer for on and off arrangements of saraj, binay, Avaids or equivalent on the top of the tower with light dependent resistance sensor (day and night automatic timer) switch with necessary MCB switches, armoured cables clamps etc. all complete as per direction of Engineer-in-charge.

Providing and fixing copper spike type lightening arrester made of 10mm OD copper with 10mm ISRO bar copper fitted to 120 degree rod size 5mm with necessary fixtures at the top of tower , copper cable of required diameter . The spike shall be instulated from tower by teflon materials as directed by the Engineer-in-charge.

Painting of Roof top pole from top to bottom including bracings,platforms, landings,ladder, guard rails ,runway etc. with superior quality weather resistant LUXOL high-gloss synthetic enamel paint or equivalent (two or more coats) in international orange and white shade approved brand and manufacture in equal alternate layer to give an even shade including base coats of Zinc chromate primer or equivalent primer of approved brand and manufacture i/c scaffolding and taking all necessary precaution to protect the human life, life insurance coverage of labour etc. complete as per direction of the Engineer-in-charge.

Roof top pole of height 9 Mtr

Roof top pole of height 6 Mtr