Providing tower foundation and erection of 40 M Narrow based GSM Tower, including earthing, lightening arrestor aviation lamp and outdoor bed at Chinna Kayapakkam site ID 51607

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 disposal of excavated earth, lead up to 50m and lift up to 1.5m,disposed earth to be levelled and neatly dressed.

All kinds of soil

Ordinary rock

Extra for every additional lift of 1.5 metre or part thereof in

All kinds of soil

Ordinary rock/hard rock

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

Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering. All work upto plinth level.

1:4:8 (1 cement:4 coarse sand:8 graded stone aggregate 40mm nominal size)

Providing and laying in position ready mixed M-25 grade concrete for reinforced cement concrete work, using cement content as per approved design mix, manufactured in fully automatic batching plant and transported to site of work in transit mixer for all leads, having continuous agitated mixer, manufactured as per mix design of specified grade for reinforced cement concrete work, including pumping of R.M.C. from transit mixer to site of laying , excluding the cost of centering, shuttering finishing and reinforcement, including cost of admixtures in recommended proportions as per IS : 9103 to accelerate/ retard setting of concrete, improve workability without impairing strength and durability as per direction of the Engineer - without impairing strength and durability as per direction of the Engineer -in-charge. (Note :- Cement content considered in this item is @ 330 kg/cum. Excess/ less cement used as per design mix is payable/recoverable separately)

All works upto plinth level

Providing and laying in position specified grade of reinforced cement concrete excluding the cost of centring, shuttering finishing and reinforcement all work upto plinth level.

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

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

Foundation, footings, bases of columns etc for mass concrete

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

Columns, pillars, piers, abutments, posts and struts.

Reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete.

Thermo Mehanically Treated Bars

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

Fixing Foundation bolts/anchor bolts to templates in the four stems of foundation for tower including accurate alignment, levelling etc complete (Anchor bolts along with templates will be ) and the rate in this item is only for fixing upto 12 Nos of bolts in one stem/column) in position in the columns before putting concrete as per the requirement.as per the direction of Engineer-in-charge

Supplying new galvanised steel bolts, nuts and washers for fastening the 40 m height narrow based tower ( For Missing bolts ).

Erection of four legged ground narrow based ( light weight) 40 m high communication tower after segregation/sorting of the tower materials as per erection drawings ( Tower materials will be supplied free of cost at GSM stores Vyasarpadi,Chennai. and transportation will be paid separately).

Painting the 40 metre ground based tower, including ladder, cable tray, working platforms, gantries etc. with Luxol or equivalent high gloss synthetic enamel paint in two or more coats of required colour, (as per aviation standards for tower) and even shade as directed by Engineer-in-charge.

Transportation of Tower/gantry materials for 40 metre tower from GSM stores at Perambur, Chennai to MMNagar , site including loading, unloading and stacking at site etc complete.

Fixing available G.I. ladder / gantry work by assembling and fixing fom the tower to shelter nearest points ceiling with necessary cleats , nuts and bolts etc., complete . The rate including transportation of ladder / gantry from Perambur stores to site including loading, unloading to terrace etc all complete as per the direction of Engineer-in-Charge.

Providing GI plate earth including excavation of pit of size 500x1500x 3000mm depth in all kinds of soil and placing four numbers of GI plates of size 600x600x6 mm thick vertically at diagonally opposite ends in the excavated pit and inter connect the plates with 25x3 mm GI strips with 2 Nos of GI bolts and nuts of 10mm dia at each connection and placing galvanized iron pipe of 50mm dia and 3000mm length at the centre of the GI plate grid and interconnect the pipe at minimum two sides with connecting flat of the GI plates with GI flat of size 25x3mm with GI bolts and nuts and fill the pit up to a depth of 650mm with charcoal of 20mm nominal size and the remaining portion of pit shall be filled with loose soil free from stones and wet the entire soil with water and providing precast RCC rings 300mm dia 450mm height and 50mm thick with reinforcements and cover slab of 300mm dia 50mm thick for earth chamber etc. and levelling the surplus excavated earth as directed by the Engineer in Charge

Providing ring earth including necessary provision for connecting tower leg and earthing for aviation lamp including excavation of trench of size 500x1000mm depth and laying GI flats of size 50x3mm and jointing flats with plate earth vide relevant item above and jointing at corners with 2 Nos.of 10mm dia GI bolts and nuts with necessary spring washers and refilling the trenches with the excavated soil free from stones and disposal of surplus soil as per the direction of the Engineer-in-charge.

Providing and fixing copper lightning conductor of 1500mm length, 25mm dia hollow tube of wall thickness not less than 1.6mm including tinning the bottom portion of the spike for a length not less than 150mm (lightning conductor to be fixed at the top of the tower) and connecting the copper busbar to the lightening arrester using 2 Nos.10mm dia brass bolts and nuts all complete as directed by the Engineer-in-charge.

Providing and fixing 25X5 mm GI flat for connecting the lightening arrester to the plate earth. The GI flat shall be insulated with heat shrunk PVC sleeve and shall be fixed with tower member using suitable clamps in such a way flat shall no where directly contact the tower member all as directed by the Engineer-in-charge.

Supplying and fixing LED aviation obstruction lamp of Saraj, Binoy, aviades, Litten or equivalent with Light Dependent Resistant sensor (day and night authomatic timer) with necessary MCB switches, armoured cables(2x1.5 mm square copper cables), clamps etc, complete as per the direction of Engineer-in-charge

Providing and fixing in position structural steel work with galvanized steel sections-tees, angles, flats, channels etc., welded in built-up sections/frames etc., including cutting, making holes, hoisting, fixing in position and applying a priming coat of zinc chromate primer all complete for gantry work (and tower members when required)

Brick work with F.P.S. bricks of class designation 50 in foundation upto plinth level

Cement mortor 1:6 (1 cement:6 coarse sand)

12 mm cement plaster mix

1:6 (1 cement : 6 fine sand )

Erection of BTS shelter of available size upto 3.0 mx 2.5m x 3 m over Steel Structural members for base after segregation/sorting of the shelter as per drawings with all its accessories including Cable tray inside shelter for 12 meter runway , as supplied as per the direction of Engineer-in-charge . The rate includes a) Transportation of Shelter materials from the stockyard -Perambur BSNL stores to the site of work at Kalpakkam by mechanical transportation including loading, unloading and stacking as directed by the Engineer-in-charge.

Providing roofing consisting of truss work with colour coated GI Sheet including dismantling damaged roofing and stacking the serviceable materials of the same. The truss work and purlins consists of 25mm squaare tube of SWG 14 (1.63mm thick) @ 1.29 Kg/Metre, spaced at a maximum distane of 100 cm centre to centre. The roofing sheet shall "GALVALUME SHEET" of 0.47mm thick metallic hot dip coated PPGL aluminium - Zinc alloy sheet of JSW or equivalent make sheet fixed to the purlins ith self tapping screws with EPDM washers and sealed with sealant for arresting leakage. The roofing sheet shall be laid to an area with 0.30m projection alround from outer face of shelter. The truss work shall be painted with anti - corrosive painting two or more coats. The of the truss work shall be covered with 0.47 mm "GALVALUME SHEE" (PPGL ) with necesary frame work if required of 25mm square tubes. The sides shall be provided with 0.20 to 0.30m width PPGL Plain sheets all round to avoid any waer entering from sides. The fabrication of the trusses shall be done as per the approved truss diagram all complete as per the direction of Engineer - in - charge. (Rate includes all the components and nothing extra shall be paid). The measurement for payment shall be outer to outer dimension of shelter only.

Providing and fixing 19mm thick approved quality Marineplywood as per IS 710 in floors, partitions, cupboards,racks, storage units and similar locations etc. including cutting to required size and fixing with necessary nails, screws, clamps all complete as per direction of Engineer-in-Charge,

19 mm thick

Providing and fixing 2.00 mm thick sheet homogeneous Anti Static Polyvinyl chloride sheet in flooring and skirting in approved pattern on a smooth and damp proof base using rubber based adhesives of approved quality and manufacturer like DunlopS-758,Fevicol SR 998 or equivalent including rolling with light wooden roller weighing about 5kg and prividing copper strips etc all complete as directed by Engineer-in-Charge in approved colour and shade.

2.0 mm thick sheet

Providing and fixing IS : 3564 marked Aluminium die cast body tubular type universal hydraulic door closer with necessary accessories and screws etc. complete.

Sealing of joints in shelter with silicon sealant in the walls , ceiling and roof etc with weather silicon sealant of approved quality and direction of Engineer -in-Charge

Providing and fixing aluminium sliding door bolts ISI marked anodised (anodiccoating not less than grade AC 10 as per IS : 1868) transparent or dyed to required colour or shade with nuts and screws etc. complete :

250 mmX16mm

Deco spray painting of the shelter with two or more coat with special coating enamel paint of approved brand and manufacture all complete as directed by The Engineer -in- Charge

Providing and fixing stainless steel butt hinges with stainless steel screws of approved quality a) 125x64x1.90 mm

Finishing walls with Acrylic Smooth exterior paint ofrequired shade :

New work (Two or more coat applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/ 10 sqm) sqm

S BASKARAN