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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 Kms in the line route with required jungle clearance for survey, profile preparation of approved routeon graph sheet and marking of offset on either side of line, marking of side clearance for hills, sand dunes etc., as per specifications and tower scheduling. |
| 2 | Check survey as per approved route of line which includes:- Rechecking the line route as per approved profile, chainage , tower center marking, pit marking, bisection of angle tower as required at site. |
| 3 | Excavation :- Excavation excluding back filling, including shoring, shuttering,dewatering, etc., up to the required depth as per foundation specification/ drawings.(i ) Any Soil, Soft rock other than hard rock. |
| 4 | Setting of templates & stub/anchor boltSetting of template & stub/anchor bolt & removal after concreting, excluding cost of excavation and concreting but including back filling with excavated/borrowed earth (with lead& lift) in layers with ramming and watering as per specification:-(A) Tower including extension upto 9 meters |
| 5 | Concreting :Providing & laying cement concrete for all type of foundation as per latest ISS:456 including cement, sand, stone, aggregate 20 mm nominal size, water etc. preparing surfaces, shuttering, placing, ramming, curing, finishing, as per specification and drawing.(i)1:3:6 mix |
| 6 | Concreting :Providing & laying cement concrete for all type of foundation as per latest ISS:456 including cement, sand, stone, aggregate 20 mm nominal size, water etc. preparing surfaces, shuttering, placing, ramming, curing, finishing, as per specification and drawing.(ii)1:2:4: mix |
| 7 | Concreting :Providing & laying cement concrete for all type of foundation as per latest ISS:456 including cement, sand, stone, aggregate 20 mm nominal size, water etc. preparing surfaces, shuttering, placing, ramming, curing, finishing, as per specification and drawing.(iii)1:1.5:3 Mix |
| 8 | Steel Reinforcement : Cutting bending welding of joints if required, fixing and placing of steel reinforcement as per specification and drawing including material. |
| 9 | EarthingEarthing of towers with pipe type earthing excluding the supply of pipes, wires, flats & connectors but including coke/charcoal etc. excavation auguring and backfilling in all type of soil. |
| 10 | 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 up to bottom cross arm/beam level including application of zinc rich paint.(A) Erection of Towers (with Extensions upto 9 Meters) |
| 11 | CONDUCTOR STRINGING:-Stringing of A.C.S.R. Zebraincluding hoisting of insulator string, laying, jointing & tensioning of conductor, clamping with armour rods and fixing of vibration damper per route KM of the line (i) Single conductor |
| 12 | EARTH WIRE STRINGING:- Stringing of galvanised steel stranded wire including laying, jointing& tensioning, clamping,clipping and fixing vibration damper and earth bond etc. (i)One no.7/3.15 mm galvanized wire |
| 13 | Dismantling of towers:- Dismantling of super structure having tack welded bolts & nuts, including removing of D shackles, hangers U-Bolts, step bolts, ACD, Danger plate, phase plate of tower including transportation from site to our store and stacking of all materials. (A) 132 KV AND 220 KV S/C & D/C TOWER (ALL TYPE) |
| 14 | (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 |
| 15 | (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. 7/3.15 mm galvanised wire |
| 16 | Restringing of conductor:- (A) Restringing ACSR Zebraconductor:-Dismantling of vibration dampers and armoured rod, removal 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 .(i) Single conductor |
| 17 | (B)Restringing of earth wire:-- Dismantling of earth bond, vibration dampers, declipping& fitting in rollers ,detensioning holding& lowering of earth wire adding/ removing ,lifting in rollers and retensioning, jointing& clipping and 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.One No 7/3.15 mm galvanised wire |
| 18 | ERECTION OF SUB STATION STEEL STRUCTURES, Columns,beams, lighting mast and equipment structures (excluding Circuit Breakers and Capacitor Banks) of all types including transportation of structure members, nuts & Bolts, washers, etc. from site store to locations, their assembly, placing on foundation, fixing of template, with foundation bolts as required, leveling and preparing for grouting as required, but excluding grouting, erection after grouting and tightening and punching of nuts & bolts. (Maximum height of structures up to 20 Mtrs.) |
