Construction of 40M (4Legged) Light Weight Narrow Base Tower Foundation including Erection, Painting, Runway, Antenna Mount etc. in Chunar T.E. Compound, Dist. Mirzapur.

Amount

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

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

Ordinary rock

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift up to 1.5 m.

Extra for every additional lift of 1.5 m or part thereof in excavation /banking excavated or stacked materials.

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 :

1:4:8 (1 Cement : 4 coarse sand(zone-III) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources).

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

1:1.5:3 (1 cement : 1.5 coarse sand (zone-III): 3 graded stone aggregate 20 mm nominal size)

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

Foundations, footings, bases of columns, etc. for mass concrete

Lintels, beams, plinth beams, girders, bressumers and cantilevers

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 upto 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).

Supplying and stacking at site.

Good earth.

Carriage of holding down anchor bolts with nuts, M.S. templates for 40M (4 legged) tower (Approximate weight 350.00 kg) by mechanical transport from BSNL store at Lucknow to tower work site TE Compound Chunar (Approximate lead 325 Km) including loading and unloading etc. all complete and as per the direction of Engineer-in-Charge.

Placing and fixing in position with necessary templates, frames etc. holding down anchor bolt, nuts, M.S. plate of all sizes in R.C.C. foundations including tying and maintaining the exact spacing and alignment of bolts during and after concreting as per drawing and specification strictly within acceptable tolerance limit, cleaning, oiling etc. as per the direction of Engineer-in-Charge etc. all complete (Number of bolts shall be measured for payment).

Erection of 40M (4 legged) light weight tower including assembling, sorting, lifting, fitting and fixing of all tower materials as per the drawing upto an approximate weight of 10000 kg including taking all necessary precaution against damages to the existing and nearby structures, to protect human lives, insurance coverage of labour etc. complete in all respect as per direction of Engineer-in-Charge.

Painting two or more coats with high gloss synthetic enamel paints of approved brand and manufacture to members of 40M (4 legged) light weight tower, every alternate leg with international orange and white shade respectively as per norms of Civil Aviation signal including applying one or more coats of zinc chromate yellow primer over one coat of etch primer including necessary scaffolding etc., taking all precautions to protect human lives, insurance coverage to labour etc. complete as directed by the Engineer-in-Charge.

Fabricating, galvanising and supplying MS high density tower members, nuts and bolts of approved quality, dimensions and shape with base plate, washer, check nuts and any other required items (if missing) all complete.

Providing and fixing Antenna Mount for GSM service with tower bracket ISMC-200, clamp to tower vertical leg with U, V clamp and channel arm ISMC-100X50, bolted to tower bracket using 16mm dia U clamp etc all complete as per drawing including all materials, taking all precautions against damage whenever necessary and as per the instruction of the Engineer-in-Charge. Necessary safety precaution to protect human lives and insurance coverage of labourers.

Providing and fixing 65mm dia GI pipe 3 to 4 metre long to be clamped on channel arm MC-100X50 with 16mm dia U clamp for fixing GSM antenna as per the direction of the Engineer-in-Charge.

Providing and fixing unplasticied PVC top cover (Heavy duty) for 65mm dia antenna mount pipe as per the direction of Engineer-in-Charge.

Carriage of 40M (4 legged) N.B. tower materials (10.00 MT approximately) by mechanical transport including sorting of the materials as per the list supplied from BSNL store at Lucknow to tower work site TE Compound Chunar (Approximate lead 325 Km) including loading and unloading as per the direction of Engineer-in-Charge.

Making pit earthing with copper plate 600mmx600mmx3mm thick including accessories & providing masonary enclosure with copper plate having locking arrangement and watering GI pipe of 40mm dia etc including filling charcoal or coke and salt complete as required and directed by Engineer in charge

Providing Ring earthing by running GI flat of size 50x6mm alround at 1m away from tower base in ground at a depth of one meter from ground level.All tower legs shall be connected to ring earth by 50x6mm GI flat with necessaries ,etc.Both ends of the GI shall be brought to ground level and terminated in an enclosed brick masonary chamber of in side size 300x300x300mm with 75 class designation bricks in cement mortar 1:6 (1cement:6course sand ) including necessary excavation .Foundation concrete 1:5:10 (1cement:5 course sand:10graded stone aggregate 40mm nominal size). Plastering 12mm thick in cement mortar 1:4 (1cement:4course sand)with hinged CI cover and frame of size 300x300mm(weight of cover not less than 4.5Kg)with proper locking arrangement complete all as per directed by the Engineer in charge.)

Providing & fixing 230V LED aviation lamp at the top of tower with day and night autometic timer switch of Binoy(model A/L1-300) or Avaids or Litten or equivalent with necessary clamps MCB switches and armoured insulated copper cable of 1.5Sqmm three core havells make or equivalent with necessary clamps ,fixture as required from the aviation lamp to MCB switches including scafolding charges etc.completeas per the direction of the direction of Engineer in charge .

Providing and fixing spike type copper lightening arrester of 1500mm long 25mm outer dia copper pipe(minimum wall thickness 1.6mm)with 10mm ISRO copper bar fitted to a 20degree rod of size 5mm with necessary fixtures at top of the tower The spike shall be insulated from Tower by Teflon material.The spike shall be connected to copper earthing by 50x3mm GI Strips (which will be paid seperately.All complete as per the direction of the direction of Engineer in charge .

Providing and fixing 25x6mm GI strip of approved quality from the tower top to earth pit with necessary clamps,fixture etc.as required complete as per the direction of the direction of Engineer in charge .