Providing RCC base and erection of Roof Top Tower including painting, earthing and roofing to DG BTS at Chengotukavu, Kozhikode BA

Amount

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge.

Anchoring Reinforcement bars of 12mm to 32mm dia to existing RCC Structural Members with approved High strength Epoxy Adhesive to Provide Strength to the New structure including columns, Beams, Slabs and Footings etc. consisting of the Following operations

i) Core Drilling using Power Drilling Tool to a depth upto 25cm including Driving the tool and removing the Debris ,dust by vacuum cleaner and preparing the Anchor Hole ready and clean for the Application of Chemical

(ii) Applying" HILTI HIT RE-500" or Equivalent High Strength Injectable Mortar ( An Epoxy adhesive of Two compounds ) in equal proportions with the Application Gun to the Full length of the Anchor Hole

(iii) Inserting the Reinforcement Bars to the Anchor Hole in such a way to ensure that the tip of Reinforcement bar shall be met with the concrete end /reinforcement and bonded with the Applied Chemical and to the peripheral Concrete Surface and till the surplus Chemical Comes out of the Anchor Hole to ensure that the Anchor Hole is Void Free.

(iv) Leaving the Anchor Reinforcement free for 10Minutes without shaking /pulling in/Pulling out till the Anchor rod is completely Bonded with the core periphery.

The work shall be carried out as per the Directions of the Engineer-in-charge.(The rate is inclusive of all material and Labour involved in the above operation and nothing extra shall be paid except reinforcement which will be measured under relevant item)

Reinforced cement concrete work in walls (any thickness), including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc. above plinth level up to floor five level, excluding cost of centering, shuttering, finishing and reinforcement :

1:1.5:3 (1 cement : 1.5 M sand(zone-III)derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

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 M sand (zone-III)derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources).

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

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

Columns, pedestals, piers, abutments, posts and struts

Suspended floors, roofs, landings, balconies and access platform

Reinforcement for reinforced cement concrete works including straightening, cutting, bending, binding and placing in position all complete:-

(a)Thermo-Mechanically Treated bars of grade Fe-500D or more

Smooth finishing of the exposed surfaces of reinforced cement concrete work with 6 mm thick cement mortar 1 : 3 ( 1 cement : 3 M sand ).

Supplying and Fixing Mild Steel Anchor Bolts of Required Diameter and Length ( Diameter Varying from 16mm to 32mm ) for Tower Foundation including Making Steel Templates with Necessary Holes to suit the Diameter of the Anchor Bolts including Mechanical threading to the top 15 centimetre length of Bolts , welding with necessary MS Plates at the bottom of independent anchor bolts ,etc. complete .The Anchor Bolts and Template shall be fixed to line and Level keeping the Centre to Centre Distance in tact ,inside the Centring and shuttering of the Tower Beams Before doing concreting of Tower Foundation .( The Rate includes the cost of all Labour involved in the above process of operation inclusive Materials ,Transportation and Fixing Charges and Nothing Extra shall be Paid )

Transportation of 24M Tower materials from TE Compound at Nadhapuram to the RTT location at chengotukavu, including loading, transportation and unloading etc. complete as per the direction of Engineer in charge.

24 m Roof Top Tower upto a lead of 60 km

Erection of Three / four legged light weight GI Roof Top Communication tower including assembling the Structural Members of the Tower ,tightly connecting with GI nuts, bolts ,plate washers ,ring washers etc. including making use of necessary hoisting / climbing arrangements , safety belts and all necessary precautionary measures to safeguard the building , working labours and general public etc. to form the Finished Tower to Conform the Standard Drawings /Design/Alignment etc. complete .

Supply of missing tower materials conforming to ISRC Specifications using MS hot dipped galvanised angle sections conforming to specification attached to the respective towers including ladder, working platform, antenna fixtures, GI Nut and bolts etc. . MS angles of Yst 22/210 grade and conforming to IS 1161 etc. complete

Providing and applying Synthetic Enamel paint of approved Brand and Manufacture over the Three / four legged light weight communication tower ( NB ) . One coat of Etch Primer (MRF, Asian paint or equivalent) should be applied first followed by one coat of zinc chromate primer .Over that two or more coats of enamel paint Orange/ White ( Standard Colors Specified for Communication Towers ) of approved brand and manufacture should be applied.) All works to be completed as per the Standard Specifications and according to the directions of the Engineer in charge

Providing GI plate earth including excavation of pit of size 2000x2000x3000mm depth in all kinds of soils and placing four numbers of G I plates of size 600x600x6 mm thick vertically at diagonally opposite ends in the excavated pit and inter connecting the plates with 4 Nos. of 50x3mm G I strips with 2 No.s of G I bolts and nuts of 10mm dia at each connection and covering the joints with bitumen, placing G I pipe of 50mm internal dia ( B Class) and 3000mm length at the centre of the plate grid for watering and filling the pit with fine ash and / or finally sieved good quality soil including ramming in 20 cm layers etc. complete and cover the pit with 750x750x50mm thick precast reinforced cement concrete slab having 100mm dia hole at the centre to pass the GI pipe and construct a chamber having

Internal size not less than 280x280x250mm with half brick wall including fixing CI manhole cover of size 300x300mm of weight not less than 7.20 Kg. (cover & frame) and plastering the chamber on all sides with cement mortar 1:4 of 12mm thick (1 cement : 4 fine sand) and including disposal of surplus excavated earth if any within a distance of 5 Km lead as directed by the Engineer-in-Charge.

Providing G I strips of size 50x3 mm one end connected to the tower leg with G I bolts and nuts [with lead sheath in between] including providing and connecting the legs at the bottom of tower and the other end shall be connected to the G I plate earth/ring earth with G I bolts and nuts [with lead sheath in between] including clamping the down lead flat to walls/stems without any sharp bends using necessary clamps and screws as directed by the Engineer-in-Charge. (All joints should be covered by Shalimar or equivalent water proof tape and made air tight)

Providing GI bus bar of 50 x 3 mm connected to the tinned bottom portion of lightning conductor and to the ring earth/plate earth with 2 No.s of 10 mm dia GI nuts & bolts [with lead sheath in between] at each connection. The bus bar shall be drawn through heat shrink sleeve and shall be shrunk properly. The bus bar shall be clamped to the tower/ building walls at uniform interval of 1.5 Mt.. using proper GI clamps and ceramic insulators such that the bus bar shall be well insulated from the tower building walls all complete as directed by the Engineer-in-charge. (All joints should be covered by Shalimar or equivalent water proof tape and made air tight)

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 150 mm (lightning conductor to be fixed at the top of the tower) and connecting the GI bus bar to the lightning arrester using 2 Nos. 10 mm dia brass bolts and nuts all complete as directed by the Engineer-in-charge. (All joints should be covered by Shalimar or equivalent water proof tape and made air tight]

Steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete.

24 m Roof Top Tower upto a lead of 60 km

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

Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-charge) 0.50 mm ( + 0.05 %), total coated thickness with zinc coating 120 gm per sqm as per IS:277 in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12metre or as desired by Engineer-in-charge. The sheet shall be fixed using self drilling /self tapping screws of size (5.5x 55mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.

Providing and fixing precoated galvanised steel sheet roofing accessories 0.50 mm (+ 0.05 %) total coated thickness, Zinc coating 120 gm per sqm as per IS: 277 in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns using self drilling/ self tapping screws complete :

Ridges plain (500 - 600mm).

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade :

Two or more coats on new work over an under coat of suitable shade with ordinary paint of approved brand and manufacture

Erection of available BTS shelter having size upto 3.0m x 2.50m x 2.70m over the existing RCC slab 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 Transportation of Shelter materials from Badakara Exchange to Chengottukavu by mechanical transportation including loading, unloading and lifting to new tower location etc. complete as directed by the Engineer-in-charge.