Laying of 33 KV, 1x630 sq.mm XLPE UG cable from Velachery 110 KV SS to Kaiveli 4P structure for replacement of the existing damaged 3x400 sq.mm UG cable in 33 KV Velachery- Madipakkam UG feeder fed from Velachery 110 KV SS

Amount

Removing the blacktopping of 30cm thickness and forming cable open trench and cable duct at road crossing 60 cm wide and 135 cm deep (Clear) including cost of using machinery providing danger lights, indication arrangements wherever necessary, leads, lifts, labour, tools and plants etc., complete.The removed Tar blacks,RCC/PCC and other debris shall be removed from site before the start of excavation of trench.

Earth work excavation in soils including slush and silt under water requiring the aid of basket and vessels and forming cable trench and cable duct at road crossing 60 cm wide and 105 cm deep (clear) including cost of signal boards, danger light, indication arrangements wherever necessary and providing shoring and strutting arrangements wherever necessary all labour, leads, lifts, tools and plants etc., complete. The excavated earth should be placed in one side of trench preferably on foot path side , not to obstruct free flow of traffic.

Using Machine for a width of 60cm to a depth of 40 cm

Using Labour to a breadth of 60cm and a depth of 65cm

Removing of RCC cover slab over the RCC duct wherever necessary for placing the cable staking safely for reuses and fixing in position of the RCC cover slabs after placing the cable in the existing RCC duct including all labours, lead,lift etc, complete.

Drilling, Reaming & Laying of 33KV Cable (3Nos.) using Trenchless Technology Method at a depth of about 1.50m or more by using directional drilling unit equipped with automated pipe handling system (Horizontal Directional Drilling Machine), using bentonite mud mixing system and all necessary accessories using pulling the cable carefully without damaging other services like telephone, Internet cables, water pipes, etc., installation including cost of pipe, hire charges for all the accessories and equipment etc. Taking the necessary drive pit for drilling & laying the cable, remove the excavated earth. The rate quoted for including the charge of GPR (Ground Penetrating Radar) survey for identifying the existing utility in the proposed bore path.(closing & opening)

Dismantling the brickwork,PCC,RCC inside the cable trench and cable duct wherever occur of any thickness and clearing trench/duct free from debris and without hindrance to the cable laying work including lead, lift, labour, tools & plants etc., complete as per direction of Engineer- in -charge

Dismantling Brickwork

Dismantling PCC

Dismantling RCC

Providing M.S.barricading 1.5m height using M.S. sheet 4mm thick MS angle 50x50x8 mm base channel 100x50 of all materials,leads,lifts,labour ,welding and erection ,transporting at site placing in position,shifting to new location after completing works,tools & plants etc.,complete.

Laying of 140 mm dia PVC pipes, cutting and jointing the pipe, tying with 7/20 SWG G.I wire inside the pipe and closing the ends with end cap including cost of PVC specials, labour, lead, lift, T&P, etc., complete excluding cost of PVC pipes to be supplied by TANGEDCO

Laying plain cement concrete 1:3:6 using 20mm HBG metal for bottom portion of trench for fixing PVC pipes in cable duct in proper alignment and level as per standard specification including cost of all materials , lead, lift, curing , etc., complete

Transporting of 33 KV cable drums including cost of loading at stores, unloading of 33 KV cable drums each weighing approximately 7T in lorries using truck mounted crane for both loading and unloading including cost of labour required, etc., (3 drums at a time)

Laying of 1x630 sq.mm 33KV XLPE UG cable by means of winch over rollers provided by contractor. The rate includes the cost of pulling the steel wire rope from winch side to drum side providing labour as required at site for tying the cable in trefoil formation with nylon rope/PVC pipe etc., complete

Refilling with filling sand in layers well consolidated as per standard specification including cost of all materials, labour, lead, lift etc., complete

Laying of 33KV RCC cover slab including transportation from TNEB stores, loading, unloading and laying carefully at site as directed by Engineer-in-charge

Refilling with excavated earth in layers and well consolidated as per standard specification including cost of all materials, labour,lead, lift etc., complete

Transporting and clearing the excess excavated earth and debris then and there immediately to avoid any hindrance to normal flow of traffic and public beyond a distance of 5km from work spot as per direction of Engineer -in -charge including loading and unloading charges etc., complete

Transporting of 33 KV empty drums loading at site, and devolution of empty 33 KV steel cable drum each weighing 1 to 1.5 T from various work site (3 drums at a time) and balance cables if any to departmental stores

Providing watch and ward (Unskilled) at site as instructed by the site-in-charge

Bailing out of water from cable trench and duct while excavating and also while laying cable using 5HP diesel pump including cost of fuel,opeartor etc.,complete.

Providing 18 gauge aluminium strip with Nylon tie at 10m intervals for engraving voltage level,size of the cable,name of the feeder including cost of all materials,labour charges,transportation charges etc complete.(Every 10m intervals)

Casting and placing of RCC offset slab(cable route indicationn slab )of size 750x750x60mm casting in RCC 1:2:4 using 12 to 20mm HBG metal with necssary reinforcement,piling shutting,curing,transport from casting yard to various locations and fixing the slab along 33KV cable route as directed by site engineer with PCC 1:3:6 including cost of all materials,labour,lead ,lift etc., including 2 coats of flourescent painting

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