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| 1 | Detailed survey as per tentative route which includes the following major activities:-Pegging of line route, providing of survey pillar at an interval of 3-4 Km in the route with required jungle clearance for survey, profile preparation of approvedroute on graph sheet and marking of offset on either side of the line, marking of side clearance of hills, sand dunes etc, as per specification and tower scheduling |
| 2 | Check Survey as per approved route of line which includes: Re-checking of the line route as per approved profile, chainage , tower centre making, pit marking, bisection of angle tower required at the site |
| 3 | EXCAVATION:- Excavation, excluding back filling, including shoring, shuttering, dewatering etc. upto the required depth as per foundation specification/drawings. |
| 4 | (i)Any Soil, Soft Rock other than Hard Rock |
| 5 | Setting of template & stub / anchor bolt: Setting of Template & Stub/ Anchor Bolt &removal after concreting, excludingcost of excavation and concreting but including back filling with excavated borrowedearth (with lead & lift ) inlayers with ramming and watering as per specification. |
| 6 | Tower including extension upto 9 meter |
| 7 | Special tower for any span including extension |
| 8 | CONCRETTING:- Concreting;-Providing and laying cement concrete for all types of foundation as per latest ISS:456 including cement, sand , stone aggregate 20mm nominal size,water etc, prepairing surfaces, shuttering , mixing, placing, ramming, curing, finishing as per specification and drawings. |
| 9 | (i) 1:1.5:3 Mix |
| 10 | (ii) 1:3:6 Mix |
| 11 | (iii) 1:2:4 Mix |
| 12 | Steel Rainforcement - Cutting, bending, welding of Joints if required, fixing and palcing of steel reinforcement as per specificiation and drawings including material. |
| 13 | EARTHING:(A) Earthing of towers with pipe type earthing excluding the supply of pipes, wires, flats &connectors, but including coke/charcoal, etc.,excavation,augering and backfilling in all types of soil. |
| 14 | ERECTION OF TOWERS:Erection of super structures including D-shackles,ACD, Hangers, U-Bolts, step bolts, danger plate, phase plate, number plate etc.Also including tack welding of bolts & nuts upto bottom crossarm/beam level including application of Zinc Rich paint |
| 15 | Errection of tower with extension upto 9 meter |
| 16 | Errection of special towers (with extension) |
| 17 | CONTUCTOR STRINGING:-(i)Stringing of ACSR Zebra including hoisting of insulator string, laying, laying, jointing & tensioning of conductor, clamping with armour rodsand fixing of vibration dampers per route KM of the line single conductor |
| 18 | EARTH WIRE STRINGING:-Stringing of galvanised steel stranded wire including laying, jointing & tensioning , clamping, clipping and fixing vibration damper and earth bond etc. |
| 19 | (i) One No. 7/4 mm galvanised wire |
| 20 | DISMANTLING OF TOWERS:Dismantling of super structures alongwith extensions, having tackwelded Bolts & Nuts, including removing of D shackles,hangers,U-Bolts,step bolts, ACD, Danger plate, number plate,Phase plate of tower including transportation from site to our storeand stacking of all material |
| 21 | (A) 132KV & 220KVS/C & D/CTowers (all types) |
| 22 | (A) Destringing of ACSR Zebra Conductor:Dismantling of vibration dampers and armour rodsremoval of conductors from clamps and fitting in rollers detensioning , dehoisting and collecting the material & depositing the same in ourstore and stocking(i) Single conductor |
| 23 | (B) Destringing of Earth Wire: Dismantling of earth bonds, vibration dampers, declipping & fitting in rollersdetensioning and collecting the material & depositing the same in our store and stacking: (i) One No. 7/4 mm galvanised wire |
| 24 | Restringing of conductor:-(A) Restringin ACSR Zebraconductor:-Dismentlingof vibration dampers and armoured rod, removel of conductor from clamps& fitting in rollers, detensioning,dehoisting of insulator string as required adding,removing and jointing of conductor, hoisting of insulator string lifting of conductor into rollerand retensioning jointing&fitting of armoured rodsand vibration damper and clamping per route km of the line section to be restrung, dismantled material not reuseddepositing the same in our store and stacked . |
| 25 | (i) Single conductor |
| 26 | (B)Restringing of earth wire:--Dismentling of earth bond,vibration dampers,declipping&fitting in rollers ,detensioning holding& lowering of earth wire adding/ removing ,lifting in rollers and retensioning, jointing& clippingand fitting of vibration dampers and earth bond per route km of the line section to be restrung.Dismantled material not reused to be deposited in our stock and stacked . |
| 27 | One No 7/4 mm galvanised wire |
