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| 1 | 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 ofexcavated earth, lead upto 50m and lift upto 1.5m, disposed earth to be levelled and neatly dressed.a) All kinds of soil. |
| 2 | 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 upto 1.5 m. |
| 3 | Extra for every additional lift of 1.5 m or part thereof in :a) All kinds of soil. |
| 4 | Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering - All work upto plinth level :a) 1 : 4 :8(1 cement : 4 coarse sand : 8 graded stone aggregate 40 mm nominal size). |
| 5 | b) 1 : 2 :4(1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size). |
| 6 | 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 :a) 1 : 1.5 : 3 ( 1cement:1.5 coarse sand : 3 gradedstone aggregate 20 mm nominal size). |
| 7 | Half brick masonry with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in superstructure above plinth level up to floor V level. a) Cement mortar 1:4 (1 cement :4 coarse sand) |
| 8 | Reinforcement for R.C.C. works including straightening, cutting, bending, placing in position and binding all complete.a) Thermo-Mechanically Treated bars. |
| 9 | 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 |
| 10 | 12 mm cement plaster of mix : a) 1:6 (1 cement: 6 fine sand) |
| 11 | Finishingwallswithwater proofing cement paint of required shade :a) New work (two or more coats applied @ 3.84 Kg / 10 sqm). |
| 12 | Paintingwith synthetic enamel paintof approved brand and manufacture to give an even shadea) Two or more coats on new work |
| 13 | Fixing bed plates templates and all anchor bolts etc for items of tower foundation including extremely accurate positioning, levelling etc complete as per the direction of Engineer-in- charge( bed plates, templates & anchor bolts etc to be supplied by department free of cost ) ( The rate includes the cost of fixing all bed plates, templates and anchor bolts for four legged tower. This item also include transportation of Bolts, angles etc. |
| 14 | Transportation/carriage of tower materials of 40 metrer (4 legged) light weight narrow based approx 10.00MT in in weight by mechanical transport from BSNL store for tower Panta to the working site Gogri, Khagaria ( distance 160 km approx) including sorting of tower members (size and number wise) with loading, unloading and stacking properly in countable position at site including all operation complete as per direction of Engineer-in-charge. |
| 15 | Hoisting, fixing and erection of 40mtr. High NBLW tower as per approved drawing and design with the all its necessary components which include antenna fixtures , carrier and fastening, gantry cable feeder rack on resting and working platforms with hand rails, wave guide rack , wave guide rack support, ladders etc., climbing ladder, platform with railing and fixing with galvanized bolts, nuts and spring washers, necessary welding etc wherever required complete in all respects as per the directionsand satisfaction of the Engineer-in- charge. Note: Rate includes cost of all operations involved in hoisting and erection of tower i/c hire and labour charges of tools, plants and machineries, welding , drilling, cutting etc i/c necessary arrangement for safety belts, helmets to labours, insurance premium of labours etc. and nothing extra will be paid. The contractor has to supply insurance coverage certificate of workers. (The item will be measured after successful completion of A/T by competent authority). (a) 40 mtr. High NBLW tower. |
| 16 | Grouting the base plates legs anchor bolts and nuts of tower by enclosing the all four legs by half brick work in CM 1:4( 1 cement: 4 fine sand) on the column upto 300mm height applying grease to thenuts bolts to be emended, covering the nuts bolts by polythene sheet filling the enclosure of brick work by sand laying cement concrete 1:2:4(1 cement:2 coarse sand:4 graded stone aggtt.20mm nominal size)on the leg to proper slope and plastering eith 12mm cement plaster alround with CM 1:6 all complete as per the direction of Engineer-in-charge etc complete. |
| 17 | Providing and applying two or more coats with LUXOL high gloss synthetic enamel paint or equivalent to members of 40 metre narrow based tower of approx. weight 10.00 MT every alternate leg in international white and orange as per norms of civil aviation signal i/c applying one or more coat of zinc chromate yellow primer(BISON HB Zinc Phosphate or equivalent) over and above one coat of etch primer ( BISON wash primer or equivalent) and necessary scaffolding etc., taking all necessary precautions to protect the human lives and insurance coverage to labourers etc all complete as per direction of Engineer-in-Charge . (Note: Rate includes painting of tower, platform, antenna mount, ladder, vertical tray etc. and copy of Insurance Policy shall be produced before execution of this item) |
| 18 | Earthing with copper earth plate 600 mm X 600 mm X3 mm thick and placed vertically in pit of size 900 mm x 900 mm x 3000 mm.The boltsnuts, washers shallbe of copper. The pit shall be filled with Charcoaland salt up to a depth of 900 mm & remai ning portion with loose soil without stones. The masonry chamberat ground level having internal dimension of size 300 X300X 300 mm with 115 mm thick brick work with class designation 50in cement mortar1cement: 4 coarse sand madeon 700 mm x700 mm x150 mm base concrete 1:4:8 (1 cement: 4coarsesand: 8 stone aggregate)with 40 mm nominal size) with a hole in middle to pass the GIPipe 20 mm dia with a provision forfunnel andprovided with CI frame and cover( wt of Covernot less than 4.5 Kg/Sqm) with locking arrangements. The funnel shall be fixed with wire mesh. The manhole cover shall be pain ted and marked withthe resistance of earth The plate earth of placed in one corner of Tower leg and shall be inter connected with Ring earth by a copperstrip of 25 x 3 mm size required length complete as per drawing and requirement and as directed by Engineer-in-Charge. |
| 19 | Providing and laying ring earthing with G.I. strips 50 X 3 mm to be buried in trench of curved1000 X 300 mm width around the tower 2 metres away from legs.The G.I. strip should be bending at all cornersall connections are to be made with G.I. nuts and bolts, each leg of tower shall be separately connected with G.I. strip of 50 X 3 mm from top of the tower stem to ground level and tied up with legs with same strip at an interval of 4.00 metres Both ends of G.I. flats shallbe brought to ground level and terminated in brick masonry chamber 300 x 300 x 300mm size with50class bricks in 1 cement :6 coarse sand on base conc rete 1 cement: 5 sand: 10 graded stone aggregate 40 mm in 1 cement:: 3finesand with Hinged C.I. cover and frame (weight of Cover 4.5 kg/sq Mtr.)with proper locking arrangement. Lightening arrester should be connected to ring earthingwith the G.I.strip. The trench tobe refilled with good earth after providing sand, dust charcoal and salt at different layers include ing magger test etc. complete as per direction ofEngineer-in-Charge. |
| 20 | Supplying and fixing LED aviation twin type obstruction lamp of Bajaj, Saraj, Binoy, Avidas, Litten or equivalent with light dependent resistance sencer (day and night automatic timer) with necessary MCB switches armoured cables clamps etc. complete. |
