Diversion and reconstruction of the part of 132KV DC Transmission line Agartala Rokhia Section due to tilting of tower at location no 15 C 6 near Barjala Bridge Agartala

Amount

GROUP-A (SUPPLY) :

Galvanised steel materials for towers.

Stub in/c. cleat (Set of four)

Super structure.

Accessories for tower

Phase plate (size 10cm dia) (set of three R,Y,B.) .

Danger plate (size 30 X 20 cm.) Made of 18 SWG thick.

Number plate (size 15 X 10 cm.)

Anti climbing devices - (15 kgs set consisting for each tower)

G.I. Barbed wire

Galvanised iron made nuts & bolts,spring washer, flat washer, 'D' shackle & 'U' bolts of reqired sizes.

Supply of 7/3.15mm Galvanized steel strended wire of Gr.III conforming to ISS 2141of 1979 or as ammended upto date.

HARDWARE FOR EARTH WIRE :-

Earth wire hardware suitable for 7/3.15mm galvanized steel strended wire.

Compression type joint

Tension clamp for angle location '2-U' bolted type.

16 mm dia. 'D' shackle.

Stock bridge type vibration damper.

Parallel groove clamp with nuts,bolts and washer etc.

Compression type galvanised stranded steel wire lug (Earth bond)

Earthing set, pipe type consisting of 40 mm. hot dip G.I. Pipe 3 mtr. Long perforated, galvanised 50 X 6 mm. steel flat 2.5 mtr. Long 1 piece 450 mm. long another piece in 'L' shape complete with G.I. Nuts, bolts, washer as required.

GROUP "B" (CIVIL WORKS)

Original survey of transmission route allignment which shall include following sequentional schedule of sub items. The works to be carried out as per standard of transmission line other wise specified and directed by Engineer-In-Charge. (Scale- R.F.=1:200).

Preliminary survey which includes road allignment better accessible transportation road, details report preparation & submission etc. thereof.

Route survey with details of allignment angle & direction thereof including necessary jungle cutting & preparation of allignment plan etc.

Preparation of profile plan and "L" section etc. & submission thereof.

Providing & fixing of necessary "T" shape RCC piller of 1:2:4 etc.

Mobilization of all equipment and accessories personal etc. and cost of demobilsation of the same after complition of work including cost of setting up camp sinking 1.50 mm dia bore hole through all types of soil(excluding boulder & rock) by shell and auers with full length flash joint casing(as per I.S) conducting standard penetration test as per standereds at an interval of 1.0to 1.5mfor logging purpose collection of undisturbed soil sample at an interval of 2.5 to 3.0m from cohesive and party cohesive deposit up to termination depth including shifting of equipment from one bore hole to other bore hole conducting routine laboury test like grain size LL,P,NMC,sp. Gravity Tri-axial/direct shear test consideration test chemical analysis on UDS & SPT soil samples as per standard specificationpreparation and submission of final report(6 copies) including suitable recommendation of safe bearing capasity for different type of foundation completes.

Check survey during foundation work.

Earth work in excavation in foundation trenches not exceeding 1.5 m in width or 10 sqm. on plan or drains not exceeding 1.5 m in width or 10 sqm. on plan in/c. dressing of sites and ramming of bottoms lift upto 1.5 m. in/c. getting out the excavated soil a) All kinds of soil.

Providing & laying cement concrete 1 : 3 : 6 (1cement : 3 river sand : 6 stone aggt. of 20 mm. nominal size) excluding the cost of centering and shuttering in. (a) Foundation and plinth

Setting of stubs (Set of four) including centering, levelling etc.with the help of template as required.

B' - typeAngle tower

C' - type (Angle tower)

Cold twisted steel reinforcement for RCC work in/c. bending, binding, placing in position complete.

Providing RCC work 1:2:4 (1 Cement: 2 River sand : 4 stone aggt. of 20 mm. nominal size) including finishing & plastering the exposed surface with cement mortar 1:3 (1cement: 3 river sand) thickness not exceeding 6mm. to give a smooth and even surface including supply of cement, sand and stone aggt. 20mm.nominal size centering, shuttering, propping, dewatering etc. as required and excluding the cost of M.S. rod but including removal of performed steel from boxes and back filling of excavated earth, dressing, ramming etc. as required.

Boring, providing and installation 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) or Bailer and Chisel Technique by Tripod and Mechanical Winch Machine all complete, including removal of excavated earth with all its lifts and leads. (Length of pile for payment shall be measured upto bottom of pile cap). i) 600 mm dia piles.

GROUP "C" (ERECTION)

Super structure erection including fixing up Danger plate, Number plate,Phase plate, step bolt, Bird guard, Anticlimbing devices including tack welding of bolt upto lower level of bottom crossarm to complete in all respect as required for all type of towers including extension portion.

Stringing of 7/3.15 mm. galvanised stranded steel earth wire including laying, stringing, tensioning, clamping and jointing per KM of earth wire including connection of earth bonds two nos. in angle location and one no. in tangent locations.

Grounding of tower with perforated Hot dip G.I. pipe and 50x6mm G.I.Flat including the cost of charcoal and salt per set as per specification.

GROUP - "D" (DISMANTLING AND HANDING OVER OF MATERIALS)

Dismentling of ACSR "PANTHER"' conductor per route Km of 6(six) conductors from existing tower and handing over to Sr. Manager, 132KV Grid Sub-station, 79-tilla, Agartala.

Dismentling of disc insulator from existing tower and handing over to Sr. Manager, 132KV Grid Sub-station, 79-tilla, Agartala.

Dismentling of 7/3.15 mm. earth wirefrom existing tower and handing over to Sr. Manager, 132KV Grid Sub-station, 79-tilla, Agartala.

Dismentling of Galvanised steel materials of tower and handing over to the Sr. Manager, 132KV Grid Sub-station, 79-tilla, Agartala.