Dismantling of existing 40 M. N.B Tower from school campus KHANVEL and construction of tower foundation and erection of 40 M. N.B tower at new site near PWD Quarters, KHANVEL including shifting of tower material from school campus, KHANVEL.

Amount

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means over areas (exceeding 30cm in depth. 1.5 m in width as well as 10 sqm on plan) including disposal of excavated earth, lead upto 50 m and lift upto 1.5 m, disposed earth to be levelled and neatly dressed.

(a) All kinds of soil.

Earth work in excavation by mechanical means (Hydraulic excavator) manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5 m, as directed by Engineer-in-charge.

(a) Hard rock (blasting prohibited)

Earth work in 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.

(a) All kinds of soil.

Filling available excavated earth (including rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20 cm in depth, consolidating each deposited layer by ramming and watering, lead upto 50 m and lift upto 1.5 m.

Extra for every additional lift of 1.5 m or part thereof in excavation / banking excavated or stacked materials.

(a) All kinds of soil

(b) Ordinary rock or hard rock

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level. (a) 1:4:8 (1 Cement : 4 coarse sand : 8 graded stone aggregate 40 mm nominal size).

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.

(a) 1:1.5:3 (1 cement : 1.5 coarse sand : 3 graded stone aggregate 20 mm nominal size).

(b) 1:2:4 (1 cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Centering and shuttering including strutting, propping etc. and removal of form for.

(a) Foundations, footings, bases of columns, etc. for mass concrete.

(b) Lintels, beams, plinth beams, girders, bressumers and cantilevers.

(c) Columns, Pillars, Piers, Abutments, Posts and Struts.

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. (a) Thermo-Mechanically Treated bars.

Providing at site (tower make Jabalpur/Gopalpur) anchor bolts/foundation bolts of 28mm/ 32 mm dia and length 0.90 m having 10mm thick plate of 75 x 75mm welded to its bottom and having threads of 150mm at top. The fabrication of the tower bolts shall be done as per the drawing supplied by the department and as per the direction of Engineer-in-charge.

NOTES : (1) Material need not to be hot dipped galvanised . (2) This item includes the supply of material, its fabrication as per the drawing supplied by the departmente. (3) The rate includes the cost of all the material and labour involved in including its carriage, straightening, cutting, welding all complete as required for the preparation of foundation bolt. (4) Measurement : weight of all the material supplied (weight of each piece in extra length as required as per drawing) including weight of nuts/bolts and washers shall be measured for payment.

Demolishing R.C.C work manually/by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge.

Extra for cutting reinforcement bars manually/by mechanical means in R.C.C or R.B. work (Payment shall be made on the cross sectional area of R.C.C or R.B. work) as per direction of Engineer-in-charge.

Dismantling the existing ground base self supporting 40 metre GBT (4L-NB) Tower of weight approximate up to 10.00 MT including followings. (This operation is only for labour charges for dismantlement of Tower including its all members & fixtures including disassembling, lifting, dismembering of ladder, working platform, wave guide rack, lighting arrestor, lighting arrestor pipe stand, earthing system, dome light & its system at any level of tower etc. all complete as per the direction of Engineer-in-charge. The item also includes sorting, preparing list of each dismatled tower members, nuts, bolts & washers etc. to stack at site.The item also includes cutting the any size of nuts & bolts wherever required, and applying rust removing solution etc if required).

Notes : The item includes the following & nothing extra shall be paid on this account. (1) The necessary safety precaution to protect the human lives, insurance coverage to the labours etc. shall be sole responsibility of the agency. (2) Necessary tools and plants, equipments, machinary etc. required for the work as well as safety measures as per the relevant IS codes. (3) The agency should take every precaution against damage to the nearby structures while dismantling the tower etc. Any slackness in this regard shall be sole responsiblity of the agency.

(a) 40 metre heigh ground base NB tower

Shifting / Transportation of all tower materials and other allied fixtures like tower foundation bolts, templates, all the structural members of tower, ladder and safety cage material including clamps etc. wave guide rack materials, nuts, bolts and washers etc. shall be tranported by maintaining the safety precautions to avoid any damage.

(a) Transporting up to a distance of 20 Kms. Including loading, unloading, stacking etc. all complete as per direction of Engineer-in-charge.

Fixing of all anchor foundation bolts with the help of templete in accurate position and levelling etc. as per standard drawing accurately including necessary equipments or positioning work such as providing platform for bearing/fixing of templetes, anchor bolts etc. complete as per direction of Engineer-in-charge but excluding cost of anchor bolts, templates, nuts and washers which will be supplied by the department.

Erection of ground based self supporting tower (of any height) using new / old / recovered / dismantled tower material as available at site. The work shall include the following.

(a) Erection of tower including sorting, assembling, lifting, fitting and fixing up all tower members in position true to the alignment including assembling / hoisting / fixing of ladder, working paltform, wave guide rack, lightening arrestor, lightening arrestor pipe stand etc. at required level all complete as per manufacturer's drawing and as per direction of Engineer-in-charge. The item includes enlarging holes, straightening of twisted or bend tower members of any type etc. and all other connected works for the above operation (if any and as required) all complete as per the direction of Engineer-in-charge. (This operation is only for labour charges for erection of tower and approximate weight of tower is 10 (ten) Tonne.

NOTES : (1) The items includes for the following and nothing extra shall be paid on this account. (a) The agency shall take every precautions against the damages to the structure or nearby structures while erecting the tower. (b) Necessary safety precaution to protect the human lives, insurance coverage to the sole responsibility of the agency. (c) Item includes for all operations, tools and plants, equipments, machinary etc. required for the work as well as safety measures as per the relevant IS codes. (2) The items does not include for the dome lights and its system and earthing system for tower. These shall be paid under separate items, if and as required.(3) The items does not include the supply of tower material / dismantling of old tower and its transportation. These shall be paid under separate items, if and as required.

(b) Painting with two or more coats of synthetic enamel paints of approved colour shade and approved brand and manufacturer to give an even shade as per Aviation requirements over a coat of zinc chromate yellow primer all complete as per direction of Engineer-in-charge. Agency shall arrange for all the materials, labour, T & P etc. as required.

Supplying (at site) of deficient steel materials for tower on account of any shortage / unserviceable material found on dismantling of tower or otherwise. The material required for tower, its ladder, working platform, wave guide rack (vertical), antenna fixtures, pipe stand for lightening arrestor, nuts & bolts, washers, templates, base plates etc. as required shall be provided in required sectional size and length including drilling holes for bolts etc. all conformity with the approved drawings of S.E.R.C.and as per the directions of Engineer-in-charge and shall be made out of pure virgin structural steel of approved companies viz. SAIL, TISCO, RINL etc.

Notes : (1) All tower material to be hot dip galvanised. The tower material, fabrication & galvanising shall be as per the relevant IS code as well as S.E.R.C. recommendations.(2) This item does not include erection, priming and painting of the tower which shall be measured and paid under the separate item. (3) Measurement : Weight of all the material supplied (weight of each piece in exact length as required as per drawing) including weight of nuts / bolts & washers shall be measured for payment. (4) The rate includes cost of all material, their carriage, octroi etc. as well as labour and T & P necessary for straightening, cutting, filing, drilling etc. and hot dipped galvanising to all steel members.

Structural steel work welded in built up sections in framed work using Tees, angles, flats, bars etc. for feeder support cable tray horizontally from tower to building, vertically on the wall of building and from building to inside equipment room including fixing in position with suitable supporting / fixing arrangements at the tower end, building and floor using connecting plates and rivetting / bolting or embedding in walls / floors etc. complete as required and as directed by Engineer-in-charge and including providing and applying two or more coat of synthetic enamel paint over and above one coat of approved steel primer all complete.

NOTES : (1) Material not to be galvanised. (2) This item is including supply of materials, fabrication, erection, priming and painting all complete. (3) The rate includes all material, their carriage, octroi etc. as well as labour and T& P necessary for straightening, cutting, welding, filing, drilling etc. all complete for above all the operations. (4) Measurement : Weight of all the material supplied (weight of each piece in exact length as required as per drawing) including weight of nuts / bolts and washers shall be measured for payment.

Extra for providing single spike solid copper lightening arrestor of 650 mm length, 12 mm dia. having necessary threads & brass nut at bottom end of the rod and connecting the tin coated copper wire (IS marked) of gauge 7/20 from lower end of the lightening arrestor to the lug with 4 hole provided at 0.50 m below the top of the tower by 10 mm dia. brass nuts, bolts & washers etc. all complete and as per the direction of Engineer-in-charge. (1) The rate includes for all the materials and labour required for item as above except fixing of pipe stand which shall be paid seperately in relevent item.

Providing, laying and testing of Ring Earth system consisting of the following. (Earth resistance shall be below 2.0 ohms).

(a) Excavating 0.50 m x 1.00 to 1.50 m deep trench minimum 1.00 m away from the outer edge of foundation columns including dressing of sides and raming of bottoms, lift up to 1.50 m including getting out the excavated soil filling trench with charcoal and available excavated earth, salt etc. as per standard earthing specifications and disposal of surplace excavated soil as directed within a lead of 50 m. (i) All kinds of soil.

(b) Providing and laying G.I. earthing strip of size 50 x 6 mm (having 6 mm dia. holes at 1 m c/c along the length) inside the ring earth trench, horizontaly towards all the four tower legs and vertically upwards to connect with the gusset plate of first joint of all the four legs. The jointing of the two G.I. strips as well as joint in between G.I. strip and gusset plate of tower leg shall be done with an overlap of 90 mm, sandwitching in between a lead sheet of size 90 x 50 x 1 mm and bolted with 2 Nos. of 10 mm dia. G.I. nuts / bolts & spring washers. The jointing between the G.I. strips shall further the protected / sealed by wrapping properly with ISI marked 2" wide water proof tape.

Notes : (1) While laying the G.I. strips, they should not be bent sharply at right angles but should be laid in smooth curves of about 1 m radius. (2) The rate includes for all the materials and labour required for all the above including lead sheet, water proof tape etc. (3) Measurement : Only the net length of G.I. strip shall be measured for payment. Nothing extra shall be paid for overlapping length etc.

Providing parts of aviation light as necessary so as to satisfy aviation requirements.

(a) Supplying, installing, testing & comissioning of Single dome Aviation obstruction light (AOL) fixture having base made of aluminium die cast / fibre body and top cover of red polycarbonate dome & 230 V AC LED Aviation obstruction lamp with 300 & more Nos. clear LED's having light intensity of minimum 1200 LUX & necessary auto on-off scanner photo cell unit with tranformer in built in dome light of make from Vijay, Binoy, Altrox or equivalent etc. with necessary clamp for fixing arrangement etc. all complete as per the direction of Engineer-in-charge. The rate includes for all the materials, labour and T & P etc. required for all the works as mentioned above.

(b) Providing and fixing MCB of range 6-32 Amp of Havells, Merlin Gerin or equivalent make.

(c) Providing and fixing PVC double insulated 2 core x 1.5 Sq.mm. copper conducter / unarmoured power cable (Finolax, Polycab or equivalent) including removing damaged power cable and encasing new power cable in existing PVC conduit pipe.

(d) Providing and fixing PVC condute pipe of 20 mm dia. of approved brand and manufacture all complete as per direction of Engineer -In-Charge.

Tack welding at site all nuts with bolts including foundation bolts up to a height of 2.50 m from base plates using electric welding plant including cost of transportation of the welding plant all complete as directed by Engineer-in-charge.

Credit for the old material obtained from dismantling and demolishing as on where is basis. (a) Corroded reinforcement & MS sections.

Note: Quantity shown negative as this is a credit to work item. Positive rate quoted by agency shall automatically calculate amount credited to work in lieu of dismantled material to be taken away by contractor.

SHARANBASAPPA H HONNALLI

HUM INFRASTRUCTURE