02/2021-22/EE/TCAG

Amount

Supplying at site hot-dipped galvanised steel members for tower to fixed the same wherever found missing or replaced any damaged / vent tower members. (The materials to be used for tower - members shall be galvanised M.S. of grade A as per IS: 2062 -1999 and IS: 808 -1989 and satisfy the relevent test as per IS codes. The fabrication shall be done in accordance with IS: 800-1984 and also in accordance with the approved drawings for the towers under maintenence. The galvanising shall conform to IS: 4759 and 2629. The total mass of galvanising coating shall not be less than 610 gms / sqm i.e. 85 micron thickness)

Supplying at site hot-dipped galvanised nuts, bolts, spring washers and plain washers of required size and length for fixing the same at the joints / junctions of tower wherever found required during maintenece of tower (The material for nuts, bolts shall be of grade 4.6 and as per 6639- 1972, IS: 1364 (Part I to V) -2002, IS: 1367 ( Part VIII) -1992, Plain washers as per IS: 6610-1972 and spring washers of type B as per IS:3063-1994, IS:1148-1982, IS:2015-1977.

Carrying out detailed and precise checking of all nuts and bolts, spring and plain washers provided at all the joints / junctions of the base assembly, vertical legs members, face bracings members, various members of working plateforms at diffrent levels, antenna fixutes assembly, lightening arrestors, aviation light, earth resistance, ladders with safety cage, wave guide racks and all other fixurers etc, proper tightening of all the nuts with torque wrench of required size etc. complete including fixing of new hot-dipped galvanised nuts , bolts, spring and plain washers etc. of various sizes where found missing / required, including providing and applying rust removing solution and cutting the nuts / bolts etc wherever required to be replaced The item also includes dismantling / dismembering of any deformed / bent / deshaped members which are required to be replaced of repaired. (The payment for supplying ho-tdipped galvanised nuts, bolts, spring and plain washers members etc shall be made seperately under relevent items)

Tower up to 60 M height.

Cement plaster 1:3 (1 cement: 3 coarse sand) finished with a floating coat of neat cement. 12 mm cement plaster

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

Columns, Pillars, Piers, Abutments, Posts and Struts

Labour for hoisting, fixing and erection of feeder cable runway for 80mtr high GBT Tower as per approved drawing with all its necessary components and fixing with bolts, nuts, plain and spring washers. Cost includes necessary welding and alternation of any mismatching holes to the members wherever required complete in all respect as per direction of the Engineer - in - charge. (NOTE: Rate includes cost of all operations involved in hoisting and erection of tower including hire and labour charges of tools, plants and chineries all insurance, safety provision, acceptance testing etc., all complete and nothing extra will be paid.) (Feeder cable tray will be supply by the BSNL SSA from their store)

Segregation and stacking of tower material (cable runway ) at stores as required for of 60 mtrs ground based NBLW tower in from a lot of material as directed by the Engineer in charge (payment for sorting shall not be made before or after transporting of the material once payment is made under this item)

Mechanical transportation tower members comprising MS runway cable tray, nuts and bolts etc., of varying sizes and lengths from specified place to work site. The job includes cost of collection of all members with required lead, loading & unloading at the desired location complete as per directions of Engineer in charge. ( Nothing extra shall be paid over and above the rate on any account.)

Within the lead of 20.00 km

Extra over above item for transportation beyondthe lead of 20.00km.

Credit for taking away the old structural steel work consists of MS flats, angles and similar member etc.

Hiring Electric Welding Machine at the site of work including placing at all floors of the building:

For the period of 4 hours.

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means over areas (exceeding 30cm in depth, 1.5m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth, lead up to 50m and lift up to 1.5m,as directed by Engineer-in-Charge.

All kinds of soil

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level :

1:2:4 (1 cement : 2 coarse sand(zone-III) : 4 graded stone aggregate 20 mm nominal size)

1:5:10 (1 cement : 5 coarse sand(zone-III) : 10 graded stone aggregate 40 mm nominal size)

DINESH PAL SINGH