Construction of 220KV LILO D/C Ramgarh-Dechu line for 220KV GSS, Chandan

Construction of 220KV D/C Ramgarh Dechu line LILO at 220 KV GSS Chandan

Detail survay as per tentative route:- Which includes the following majour activites- Pagging of line route providing of survey piller at an interval of 3-4kms.

Check survey as per approved route of line which includes-Re-checking of the line route as per approved profile, chainage, tower center marking, pit marking, bisection of angle tower as required at site.

Excavation-Excavation, excluding back filling, including shoring,shuttering, dewatering, etc. upto the required depth as per foundation specification/drawings. (i) Any Soil, Soft Rock other then hard rock

Excavation-Excavation, excluding back filling, including shoring,shuttering, dewatering, etc. upto the required depth as per foundation specification/drawings. (ii) Hard rock (With blasting subject to permission or without blasting).

SETTING OF TEMPLATE & STUB/ANCHOR BOLT Setting 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 andwatering as per specification.(i) Tower including extension upto 9 meter

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., preparing surfaces, shuttering, mixing, placing, ramming, curing, finishing as per specification and drawings.(ii) 1:3:6 Mix

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., preparing surfaces, shuttering, mixing, placing, ramming, curing, finishing as per specification and drawings. (iii) 1:2:4 Mix

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., preparing surfaces, shuttering, mixing, placing, ramming, curing, finishing as per specification and drawings. (iv) 1:1.5:3 Mix

STEEL REINFORCEMENT: Cutting, bending, welding of joints if required,fixing and placing of steel reinforcement as per specification and drawings including material.

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.

EARTHING: (B) Earthing of towers legs with counterpoise typeearthings excluding supply of materialsbut including excavation and backfilling in all types of soil. (i)each set by laying 4 wires each 15m long at a depth of 600mm

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 cross arm/beam level including application of Zinc Rich paint Erection of towers (With extension upto 9 meter)

CONDUCTOR STRINGING (B) Stringing of ACSR Zebra including 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

EARTHWIRE STRINGING(A) Stringing of galvanised steel stranded wire including laying,jointing & tensioning, clamping,clipping and fixing vibration damper and earth bond etc. (I) One No. 7/3.15mm galvanised wire

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