CE(TS)/EE1/AEE2/01/110 KV/CHERAI-NJKL/2020-21

Tower Foundation, Erection, Conductor Stringing etc.

Detailed surveying of the route along the alignment fixed by the Board, preparation of the longitudinal profiles of the route showing all site details of the terrain for the14.1 km full width of the line route, plotting of tower locations with details of types and extensions to towers, preparation of tower schedule, identifying the base area available at each locations for erection of towers, calculations involving sag and tension of conductors, preparation and supply of one copy of CD ROM in Auto CAD format the approved sag template on transparent acrylic plastic sheet. Supply after completion of all the stub setting works, five paper print copies of the approved profiles drawing and route map with the final tower locations marked .

Design of shallow/ pile foundation for all types of soil for narrow base towers in all locations including extensions

Clearing jungle including uprooting of rank vegetation,grass,brush wood,trees and saplings of girth upto 30 cm measured at a height of 1m above ground level and removal of rubbish upto a distance of 50m outside the periphery of the area covered.

Conducting standard penetration test at site after reaching the required depth of boring by DMC method

Construction of Earthern ring bunds for bailing out water for excavation for foundation and stub setting including bailing out, shoring if necessary with plaited coconut cadjan and bamboos etc.. as per dimensions noted below.- Bunds beyond 0.50 m height to 1m height. 1.50 bottom width and 0.50 m top width

Providing temporary earthern ring bund using mud filled bags around the well foundation at tower locations in mud area including cost of gunny/ empty cement bags, excavting mud and filling wih the same, tying and placing in proper postions to make ring bud including necessary bailing out water, etc. compete.

Earth work excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. All kinds of soil (Ordinary Soil & Hard soil).

Earth work excavation by mechanical means (Hydraulic excavator) / manual means in foundation -Extra for every additional lift of 1.5 m or part thereof in excavation / banking excavated or stacked materials.All kinds of soil

Earth work excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. All kinds of soil (Ordinary Soil & Hard soil) In or under water and/or liquid mud, including pumping out water as required.the depth of excavtion under water shall be measured from the top of the existing water level to the centre of gravity of the area excavated under water for the first 1m depth

Earth work excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 3 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. All kinds of soil (Ordinary Soil & Hard soil) In or under water and/or liquid mud, including pumping out water as required.the depth of excavtion under water shall be measured from the top of the existing water level to the centre of gravity of the area excavated under water for depth from 1m to 2m

Close timbering in trenches including strutting ,shoring and packing cavities whereever required

Centering and shuttering including strutting, propping, all carriage by boat, head load etc. and removal of form for all heights for Well steining

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

Centering and shuttering including strutting, propping etc. and removal of form for all heights : Foundations, footings, bases of columns, etc. For Chimneys and shafts

Pile Foundation- Boring, providing and installing bored cast-in-situ reinforced cement concrete piles of grade M-25 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 boring, with bentonite solution and temporary casing of appropriate length for setting out and removal of same and the length of the pile to be embedded in the pile cap etc. by percussion drilling using direct mud circulation (DMC) / rotary or bailer and chisel technique by tripod and mechanical winch machine all complete, including removal of excavated earth with all lifts and leads (Length of pile for payment shall be measured upto bottom of pile cap). (750 mm dia piles)

Driving down teak wood piles 150 to 200 mmdia to approved lines and levels through various strata including all conveynce by all means, all hire and labour for fixing staging platform and all other appliances necessary for pile driving aftr pointing the bottom end upto 8 m depth ( Teak wood poles will be supplied departmentally)

Supplying and driving down teak wood piles 150 to 200 mmdia to approved lines and levels through various strata including conveyance by all means, all hire and labour for fixing staging platform and all other appliances necessary for pile driving after pointing the bottom end upto 8 m depth

Supplying and driving down coconut piles of 200 to 300mm dia to approved lines and levels through various strata including all hire and labour for fixing staging platform and all other appliances necessary for pile driving after pointing the bottom and upto 8m depth below ground level etc. complete.

Providing and laying in position 1:3:6 , cement concrete for tower footing,revetment and below pile cap of specified grade including conveyance by all means excluding the cost of centering and shuttering - All work up to plinth level. 1:3:6 (1 Cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size).

Providing and laying in position cement concrete of RCC M 20 (1:1.5:3) using 20mm nominal size hard granite broken stone for pile cap including cost of all materials watering curing, but excluding cost of reinforcement etc. complete as per the standard specification and direction of Board staff.

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level :mix 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)

Demolishing RCC works for pile manually/ by mechanical means including staking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in - charge.

Demolishing stone rubble masonry manually/ by mechanical means includingIn stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge : cement mortar

Demolishing cement concrete manually by mechanical means including disposal of material within 50 metres lead as per direction of Engineer in charge.

Demolishing brick work manually by mechanical means including stacking of serviceable materials and disposal of unserviceable materials within 50 metres lead as per direction of Engineer in charge.

Solid block masonry using pre cast solid blocks ( Factory made) of size 30x20x20cm or nearest available size confirming to IS 2185 Part I of 1979 for super structure up to floor two level thickness 20cm and above in: CM 1:6 ( 1 cement : 6 coarse sand) etc complete

Steel reinforcement for RCC works for pile, pile cap etc including straightening,cutting, bending, cranking and placing in position and binding all complete upto plinth level using TMT steel bars (plain grill requiring bending cold) tying with 22 gauge anodised wire,providing required cover with concrete briquets including cost of all materials, Conveyance Charge, all hire and labour etc as per the standard specification and directions of Board staff.

Stub setting of 110kV DC towers - Surveying for marking and pegging of tower locations at site as per the approved tower schedule, stub setting in correct alignment using template / Prop of all types of 110KV DC towers in concrete foundation/ rock foundation excluding excavation,concreting and back filling but including grouting,anchoring etc in the case of rock foundation and removing the stub setting template / Prop after the expiry of the predetermined time etc. complete.

Revetment- Random rubble masonry with hard stone in foundation and plinth with cement mortar 1:6 (1 cement:6 coarse sand) upto plinth level including cost of all materials and labour etc as per the standard specification and direction of the Board staff

15mm cement plaster on single/ half brick wall finished with a floating coat of neat cement of mix 1:4

Mud Filling with available earth In or under water and/or liquid mud, including pumping out water as required.

Pipe Earthing with G.I. earth pipe 3 metre long,50 mm dia including accessories, with charcoal/coke and salt as required for tower footings. Work includes excavation of earth pit of size 0.3 x 0.3 x 3.6 m including over excavation on account of sloping the banks and necessary hire for planks for filling of charcoal, earthing of tower by means of a 50 mm dia, 3 m long pipe and a double run 7/9 S.W.G galvanised steel wire or G.I tape including cost of charcoal but excluding cost of pipes, steel wire or copper tape with connecting lugs, nuts, etc. which will be supplied at departmental stores.

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 and punching etc. Complete .

Paving out, stringing and tensioning as per standard of Six line ACSR WOLF conductor 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 wherever 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

Providing barricading using casuarina poles of 15cm to 24cm girth including all charges for providing 1.25m long poles at 1.2m intervals(15-20cm below ground level) and providing poles horizontally at 3 places and tying firmly, providing danger/caution boards at frequent intervals, painting posts, providing lighting arrangements during night and taking all necessary precautions as per standards etc. complete as per directions of departmental officers at site.

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 3 phase LT line with neutral and street main if any from the post after disconnecting jumper connection, loosening pin bindings whichever necessary, re-tensioning the same after giving jumper connection, pin bindings etc after the completion of EHT line work.

Lowering down the LT single phase line with neutral and street main if any from the post after disconnecting jumper connection, loosening pin bindings whichever necessary, re-tensioning the same after giving jumper connection, pin bindings etc… after the completion of EHT line work.

Lowering down the three phase /Single phase WP Guy wire service from the poles after disconnecting and redoing the same, giving connections etc... after the completion of EHT line work.

Installation, Testing and Commissioning of FO cable & Accessories( Instead of earth wire)

Installation of 24 Fibre (DWSM) OPGW optic fibre cable on 220/110/66kV tower, fixing of hardware set, cable fittings and accessories and installation of joint boxes and its terminations etc. Pre-installation test (Drum test), Post installation test, splicing and Link test (End to End).

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. Pre-installation test (Drum test), Post installation test, splicing and Link test (End to end) and placing back concrete slabs as good as in original condition.

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

Supply of FO cable & Accessories

24 Fibre (DWSM) OPGW optic fibre cable for laying through EHT tower lines up to 110kV

Supply of hardware sets for 24 fibre OPGW OFC including cable fittings and accessories

24 fibre Joint box 4 way

FODP (48 fibre) indoor type with FC-PC coupling and pig tails (5 mtr each)

Unarmored underground Optic Fibre cable, 24 Fibre, DWSM.

PLB HDPE pipe including all accessories for above UG cable

Transportation of materials by mechanical means and distribution to locations for stringing including all charges for conveying, loading, unloading, storage, all incidental expenses during execution of work (conveyance to be arranged by Contractor )

Line and Earth Conductor

Insulators and accessories, power and earth conductor aacessories

Tower Parts and other structures including earthing set

Teak wood pole

Transportation of materials by boat to locations for stringing including all charges for conveying, loading, unloading, storage, all incidental expenses during execution of work

Line and Earth Conductor

Insulators and accessories, power and earth conductor aacessories

Tower Parts and other structures including earthing set

Teak wood pole

Transportation of materials by Head load to locations for stringing including all charges for conveying, loading, unloading, storage, all incidental expenses during execution of work

Line and Earth Conductor

Insulators and accessories, power and earth conductor aacessories

Tower Parts and other structures including earthing set

Teak wood pole

Providing temporary earthern ring bund road to the construction site by open timbering on either side of the road to act as guard walls.inside area of the gard wall has to be filled with red earth in layers of 25cm thickness and has to be compacted properly by using rollers /rammers etc. complete.

Description of Work / Item(s)

Supply of materials

Tower MS including templates,stub ,cleat and Nuts & bolts

ACSR WOLF Conductor

110KV composite insulator string for suspension 70KN

110KV composite insulator string for Tension 90KN

Single Tension Hardware Fittings including all accessories for WOLF

Double Tension Hardware Fittings including all accessories for WOLF

Double Suspension Hardware Fittings including all accessories

Vibration Damper for wolf

Mid span compression joint for wolf

P A Rod for ACSR Wolf

U Bolt for Suspension Tower

D Shakle 16mm

Pipe Earthing set

Description of Work / Item(s)

Total of BOQ 1

Total of BOQ 2