52 /WB/CD-KOL/BSNL/NIT/22-23

Amount

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. (i)In gratings, frames, guard bar, ladder, railings, brackets, gates and similar works.

Supplying at site galvanised steel tower materials, [MISSING / UNAVAILABLE MEMBERS ONLY] with average mass of zinc coating of 610 gm/Sqm (approximately 85 micron), members may be consisting of either angles, flats, base plates, gusset plates, ladders, connecting plates, climbing ladders, bolts & nuts, washers fabricated as specially instructed and as per approved drawings and specifications for erection of equivelent tower. The galvanising shall be as per IS: 4759. The structural steel for tower shall confirm to IS: 2062 and fabrication shall be as per IS: 4757. The structural steel section shall be procured from the main producers like SAIL, RINL, TISCO. In case, structural steel sections from secondary producers are permitted, the same shall be restricted only from secondary producers of repute such as PARAS, SRMB, BABA or having valid BIS certification and POWER GRID approved conforming to all relevent IS specifications and as approved by the Engineer-in Charge. (The rate includes cost of all operations as above including carriage of all galvanised steel materials from source of procurement to the site of work). Note:- 1 All steel materials shall be made from M.S. high density structural members like angles, flats, round/ square bars, tees, channels, gusset plates, joints, rivets, G.I. Pipes, bolts & nuts, washers etc. Nothing extra shall be payable for special fabrication, erection and fixing of the above steel built up section in position at any height of the tower or any building by bolts and nuts or by site welding. Note:- 2 Payment shall be made on the basis of weight of black (non-galvanised) section only and nothing extra shall be paid on account of variation in weight due to galvanising].

Transportation of dismantled tower materials (weighing approximately 8.00 Metric Ton) by mechanical transport i/c loading,unloading & head carriage (if required) to the departmental store or site.(a) For a distance upto 80 km.( For an approx.quantity of 6.50 MT.Place of delivery at BSNL store at Bankura )

Labour charges for dismantling tower materials with all of its necessary components viz. cable tray,platform and railing and climbing ladder,antenna fixures ,angles, tees, flats and channels ,heavy G.I. pipes including all gusset plates, bolts, nuts, cutting rivets, welding etc. in built up sections including dismembering and stacking within 50 metres lead as per direction of Engineer-in-Charge.(Rate inclusive of gas cutter ,cylinder charges etc at site). (i) Weighing approximately 6.50 Metric Ton

Painting two or more coats with hi-gloss synthetic enamel paint of approved brand and colour (white and orange) over one coat of ETCH primer (BISON WASH PRIMER OR APPROVED EQUVALENT) and second coat of BISON HB ZINC phosphate primer (or Zinc chromate primer) or approved equivalent primer of approved brand as per recommendation of international Civil Aviation rules in 20 M galvanised structural steel tower. 20 M galvanised structural steel tower i/c all fixtures like ladder, cable tray, antenna fixtures etc. (Rate inclusive of materials, labours as well as insurance involved in painting of New tower members)

Labour for hoisting, fixing and erection of 20 M high Ground Base tower as per site with all its necessary components viz. climbing ladder, platform with railing and fixing with bolts nuts and spring washer, necessary welding etc. wherever required complete in all respect as per the direction of E-in-C. [The rate shall include the cost of all operations involved in hoisting and errection of tower including hire and labour charges of all tools, plants and mechinaries, insurance premium of labour etc. and nothing shall be payable extra].

Drilling, punching and enlarging holes of required diameter of M.S. structural members (any thickness) by machine drilling and grinding including mending good and fishing complete as per the site requirement and direction of E-in-C.