Construction of 6km 110kV DC line from proposed 110kV Mavelikkara-Thiruvalla DC line to proposed Mannar 110kV Substation under Transmission Circle, Alappuzha

Amount

Conveying excess earth from the Substation yard by transporting mechanically to various tower locations for filling revetment including levelling the soil at deposited places, all hire and labour charges for transporting vehicle, loading and unloading etc. complete.

Transport of materials issued departmentally by mechanical transport for the works from departmental stores and distribution to locations for erection or dismantled tower parts and conductors including storage if necessary, loading, stacking and unloading charges for up to 153 km

Tower extensions and other structures and all other materials including earthing materials

Line and earth conductors

Insulators and accessories, power and earth conductor accessories

Transport of materials issued departmentally by head load up to 1 km

Tower extensions and other structures and all other materials including earthing materials

Line and earth conductors

Insulators and accessories, power and earth conductor accessories

Conducting check survey,settingout tower positions on ground,pit marking,all confirming to the approved profile and tower schedule using Digital Theodalite/Total station etc.a directed by Board staff.

Earth work 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 of excavated earth, lead upto 50m and lift upto 1.5m, disposed earth to be levelled and neatly dressed.

Earth work 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 of excavated earth, lead upto 50m and lift beyond 1.5m, and up to 3m disposed earth to be levelled and neatly dressed.

Construction of cast - in- situ vertical pile 800 mm dia using DMC method. Boring , providing installation bored cast - in - situ reinforced cement concrete piles of grade M-25 (1:1:2, 1 cement : 1 coarse sand : 2 graded stone aggregate 20mm nominal size) of specified diameter and length below the pile cap, to carry a safe working load not less than specified , excluding the cost of steel reinforcement but including the cost of cement and all other materials and boring with bentonite solution and temporary casing of appropriate length for setting out and removal of same and the length of pile to be embedded in the pile cap etc. by percussion drilling using direct mud circulation (DMC) for bailer and chisel technique by tripod and mechanical winch machine all complete, including removal of excavated earth with all its lifts and leads and minimum depth of penetration of pile in to the hard rock is to be 300 mm (length of pile for payment shall be measured up to bottom of pile cap)

Construction of cast - in- situ vertical pile 600 mm dia using DMC method. Boring , providing installation bored cast - in - situ reinforced cement concrete piles of grade M-25 (1:1:2, 1 cement : 1 coarse sand : 2 graded stone aggregate 20mm nominal size) of specified diameter and length below the pile cap, to carry a safe working load not less than specified , excluding the cost of steel reinforcement but including the cost of cement and all other materials and boring with bentonite solution and temporary casing of appropriate length for setting out and removal of same and the length of pile to be embedded in the pile cap etc. by percussion drilling using direct mud circulation (DMC) for bailer and chisel technique by tripod and mechanical winch machine all complete, including removal of excavated earth with all its lifts and leads and minimum depth of penetration of pile in to the hard rock is to be 300 mm (length of pile for payment shall be measured up to bottom of pile cap) - 600mm pile

Vertical load testing of piles initial test single pile up to 50 tone safe capacity in accordance with IS 2911 (part IV) including installation of loading platform by Kentledge or anchor piles method and preperation of pile head for construction of test cap and dismantling of test cap after test etc complete as per specification and the direction of engineer in charge. Testing agency shall submit the design of loading platform for the approval of engineer in charge.

Stub setting (using template/probe) for 110kV towers. Erection of stub, stub template, fixing of jack for supporting templatte, alignment and levelling for exact location of stubs of stub setting templates,dismantling of template after completion of initial curing of cement concrete, movement of template from one locatin to another etc.complete and as directed by Board staff-For 110kV DC Tower

Cement concrete 1: 1 1/2 :3 mixture with 20 mm metal (M 20). Providing and laying in position reinforced cement concrete of specified grade including the cost of cement to be supplied by the contractor at site, conveyance charges of cement to site excluding the cost of centring and shuttering , reinforcement - All work upto plinth level : 1: 1 1/2:3 (1 cement :1 1/2 coarse sand : 3 graded stone aggregate 20 mm nominal size for pile cap & Chimney)

Cement concrete 1:4:8 mixture with 40 mm metal. Providing and laying in position cement concrete of specified grade including the cost of cement to be supplied by the contractor at site, conveyance charges of cement to site excluding the cost of centring and shuttering - All work upto plinth level : 1:4:8 (1 cement : 4 coarse sand : 8 graded stone aggregate 40 mm nominal size for PCC)

Steel Reinforcement for RCC work including straightening , cutting , bending, placing in position and binding for completae up to plinth level

Back filling of pits after stub setting 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

Erection of tower super structure above ground level including erection of normal and special hill side extension members wherever necessary, providing tower accessories like phase, danger and number plates, bird guards, anti climbing devices including tighting, punching and tack welding upto bottom cross arm in the bolt and nut after punching and applying zink rich primer wherever necessary etc. complete, as directed by Board staff (For 110kV DC tower)

Pipe Earthing: Providing earthing in terminal tower as per standard specification by providing 150mm dia bore hole for a depth of 3.6m and placing of GI pipes 50mm dia GI "C"class 3m long into bore including cost of 600 mm dia RCC collar placing over the earth pipe and tower leg using 7/3.66 mm GI earth wire with lugs connecting to the pipe and fixing necessary GI clamp etc.,including drilling of bore cost of all lead and lifts etc.,complete.

Paving out, stringing and tensioning as per standard of Six line ACSR WOLF' conductors including attaching insulator strings with arcing horns or rings on to the tower cross arms, clamping the conductor to the insulator strings using suspension clamps with armour rods and tension clamps, jumpering the conductors at tension points, jointing the conductors and pilot wire where ever necessary, installation of vibration dampers, hire charges of tractor and stringing tools, all hire and labour for protective trestle work, providing suitable back stays at the time of stringing, etc. complete.

Paving out, stringing and tensioning as per standard one OPGW including fixing the conductors on to the tower tops using tension clamps and suspension clamps, jumpering the conductor at tension points, jointing of conductor wherever necessary, errection of earth bonds,Installation of joint box and its terminations,Preinstallation test (drum test),post installation test,splicing and link test (End to end) hire charges of the pulling machines, tractors and stringing tools, all hire and labour for protective trestles and providing suitable back strings at the time of stringing etc complete.

Centering and shuttering including strutting, propping etc. and removal of form for : Foundations, footings, bases of columns, etc. for mass concrete.

Construction of earthen ring bunds for bailing out water for excavation for foundation and stub setting, including shoring, if necessary, with plaited coconut cadjan and bamboos, etc. as per dimensions noted below. Bunds upto 0.5 m height, 1 m bottom width and 0.5 m top width

Construction of earthen ring bunds for bailing out water for excavation for foundation and stub setting, including shoring, if necessary, with plaited coconut cadjan and bamboos, etc. as per dimensions noted below. Bunds beyond 0.5 m height to 1 m height , 1.5 m bottom width & 0.5 m top width

Construction of earthen ring bunds for bailing out water for excavation for foundation and stub setting, including shoring, if necessary, with plaited coconut cadjan and bamboos, etc. as per dimensions noted below. Bunds beyond 1 m height top width to be 0.5 m and bottom width to be proportionately fixed

De watering mechanical: Bailing out water with engine and pump set including conveyance to site and erection cost of fuel, lubricating oil and other stores, pay of staff etc.complete

Dewatering Manually

Rewinding of "WOLF ACSR' from, dilapidated conductor drums unsuitable for transporting/paving out on to serviceable conductor drums issued departmentally including all hire charges for tools & plants necessary for rewinding

Drilling of holes

Filing of holes

Cutting of steel angles

Clearing grass and removal of rubbish up to a distance of 50 m outside the periphery of area cleared.

Felling trees including cutting of trunks and branches, removing the roots completely and stacking serviceable materials - Beyond 30 cm and upto 60 cm girth

Felling trees including cutting of trunks and branches, removing the roots completely and stacking serviceable materials – Beyond 60 cm and upto 120 cm girth

Felling trees including cutting of trunks and branches, removing the roots completely and stacking serviceable materials – Beyond 120 cm and upto 240 cm girth

Uprooting and removing palm or coconut stumps including stacking

Arranging scaffoldings on both sides of the Main road / railway cross as per the directions of dept. officers including hire charges of materials.

Providing derrick support and temporary stay arrangement for a tower

Forming temporary Road 1m length and 3m Wide ( works includes site clearing, earthwork , formation of temporary road using red earth to water loged tower locations and removing the temporary road after the work

Lowering down the 11kV (3 conductor) line from the pole after disconnecting jumper connection, loosening pin bindings wherever necessary, re-tensioning the same after giving jumper connection, pin bindings etc… after the completion of EHT line work.

Lowering down the LT 3phase with neutral line from the pole after disconnecting jumper connection, loosening pin bindings wherever necessary, re-tensioning the same after giving jumper connection, pin bindings etc… after the completion of EHT line work.

Sorting of tower parts, bolts,nuts of various sizes at site.etc complete.

Installation of unarmoured under ground optical fibre cable (UG OFC 24 Fibre DWSM) at 110kV substations through existing cable trench by removing concrete slab,installation of HDPE pipe etc.., Preinstallation test (drum test),post installation test,splicing and link test (End to end) and placing back concrete slabs as good as in orginal condition.

Installation,testing and commissioning of FODP 48 fibre and termination of UG cable.

Material-Supply Part

Manufacturing, Testing & Supply 48 Fiber (DWSM) OPGW Cable

Supply of Hardware set for 48 fibre OPGW OFC including cable fittings (suspension assembly, tension assembly ,dead end assembly, tension assembly for joint box locations,pass through assembly, vibration damper assembly,down lead clamp assembly earth bond etc..)and all accessories upto Joint Box

Supply of Joint Box (48 Fibre)

Supply of unarmoured under ground optical Fibre cable 24 fibre DWSM

Supply of PLB HDPE pipe including all accessories for OFC -UG cable

Supply of 48 fibre FODP (Fiber Optic Distribution Panel) indoor type with FC -PC coupling and pig tails.(5m each)

Supply GI barbed wire 12G 2 ply (TATA or equivalent make) at site including all cost of materials, labour for loading, transportation, unloading etc complete