40M GBT AT GAVI UNDER BSNL PTA

Amount

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 up to 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.

b) Ordinary rock

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

a) Ordinary 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(zone-III) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources).

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete.

a) Thermo-Mechanically Treated bars of grade Fe-500D or more.

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

Fixing anchor bolts in sets including templates with all labours and handling charges and checking with templates in line, level, plumb etc. as required by Telecom authorities and as per drawing etc. all complete.

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 :

1:1.5:3 (1 cement : 1.5 coarse sand (zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

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 up to 1.5 m.

Plain Cement Concrete 1:4:8 (one cement four fine aggregates and eight coarse aggregates) using

Transportation of tower materials by mechanical transport including loading, unloading charges and all incidental charges etc. complete from TE compound at Panadalam to site at GAVI in Pathanamthitta District and stacking of materials at the proposed tower site all complete [Approximately 8.80 MT]

Erection of four legged light weight communication tower indicated in item above. Tower erection and fabrication shall be as per all relevent IS codes.

Providing and applying paint of approved specification over the three legged light weight communication tower (NB) indicated in item No.13 (One coat of Etch primer(MRF,Asian paint or equivalent ) should be applied first followed by two coats of zinc chromate primer should be applied over that two or more coats of enamel paint orange/white of approved brand and manufacture should be applied)

Providing GI plate earth including excavation of pit of size 1500 x 1500 x 3000mm depth in all kinds of soil and placing 4nos of GI plates of size 600 x 600 x 6mm thick vertically at diagonally opposite ends in the excavated pit and inter connect the plates with 25 x 3mm GI strips with 2 nos of GI bolts and nuts of 10mm dia at each connection and placing galvanized iron pipe of 50mm dia and 3000mm length at the center of the GI plate grid and inter connect the pipe at minimum two sides with the connecting flat of the GI plates with tinned GI flat of size 25 x 3mm with GI bolts and nuts and till the pit upto a depth of 650mm with charcoal of 20mm nominal size and the remaining portion of pit shall be filled with loose soil free from stones and wet the entire sopil with water and cover the pit with 600 x 600 x 500 mm thick precast reinforced concrete slab having 75mm dia hole at the center to pass the GI pipe and construct a chamber of internal size not less than 280 x 280 x250mm with half brick wall including fixing C.I manhole cover of size 300 x 300mm of weight not less than 7.20kg (cover & frame) and plastering the chamber on all sides with cement mortar 1:4 of 12mm thick ( 1 cement: 4 fine sand) and including disposal of surplus excavated earth if any within a distance of 5km lead as directed by the Engineer-in-charge.

Providing G.I bus bar of 25 X 5 mm connected to the tinned bottom portion of lightning conductor and to the ring earth/plate earth with 2 Nos of 10 mm dia GI nuts & bolts [with lead sheath in between] at each connection. The bus bar shall be drawn through heat shrink sleeve and shall be shrunk properly. The bus bar shall be clamped to the tower/ building walls at uniform interval of 1.5 Mt.. using proper GI clamps and ceramic insulators such that the bus bar shall be well insulated from the tower building walls all complete as directed by the Engineer-in-charge.(All joints should be covered by Shalimar or equivalent water proof tape and made air tight)

Providing and fixing copper lighting conductor of 1500mm length 25mm dia hollow tube of wall thickness not less than 1.60mm including tinning the bottom portion of the spike for a length not less than 1500[lighting conductor to be fixed at the top of the tower] and connecting the GI bus bar to the lighting arrester using 2 Nos 10mm dia brass bolts and nuts all complate as directed by the Engineer-in-charge

Providing GI strips of size 50x3 mm one end connected to the tower leg with GI bolt and nuts (with lead sheath in between) including providing and connecting the legs at the bottom of tower and the other end shall be connected to the GI plate earth/ring earth with GI bots and nuts [with lead sheath in between] including clamping the down lead flat to walls/stems without any sharp bends using necessary clamps and screws as directed by the Engineer -in-charge.(All joints should be covered by Shalimar or equivalent water proof tape and made air tight)

Providing ring earth by excavating of trench of width 300mm and depth 1500mm and laying GI flats of size 50x3mm and jointing this flat with plate earth and jointing at corners with 2 nos. of 10mm dia GI bolts and nuts the necessary spring washers including lead strip of 90x50x1mm in between the jointing members and re-filling the trenches with the excavated soil free from stone and disposal of surface soil with 5KM lead as per the direction of Engineer-In-Charge.(All joints should be covered by shalimar or equivalent water proof tape and made air tight)

Supplying galvanised iron bolts and nuts with plain and spring washers etc..

Random rubble masonry with hard stone in foundation and plinth including levelling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12 graded stone aggregate 20mm nominal size) upto plinth level with :

(a)Cement mortar 1:6 (1 cement : 6 coarse sand).

Finishing walls with water proofing cement paint of required shade :

(a)New work (Two or more coats applied @ 3.84 kg/10 sqm).

Fencing with angle iron post placed at required distance embedded in cement concrete blocks, every 15th post, last but one end post and corner post shall be strutted on both sides and end post on one side only and provided with horizontal lines and two diagonals interwoven with horizontal wires, of barbed wire weighing 9.38 kg per 100 m (minimum), between the two posts fitted and fixed with G.I. staples, turn buckles etc. complete. (Cost of posts, struts, earth work and concrete work to be paid for separately) :-Payment to be made per metre cost of total length of barbed wire used.

(a) With G.I. barbed wire

Supplying at site Angle iron post & strut of required size including bottom to be split and bent at right angle in opposite direction for 10 cm length and drilling holes upto 10 mm dia. etc. complete.

Excavating holes upto 0.10 cum, including getting out the excavated soil, then returning the soil as deported in layers not exceeding 20 cm in depth, including consolidating and deposited layer by ramming watering etc., disposing of surplus excavated soil as directed with in a lead of 50 mm and lift upto 1.5 m.

All kind of soil.

Painting with black anti-corrosive bitumastic paint of approved brand and manufacture to give an even shade:

Two or more coats on new work.

Transportation of foundation bolts (36 Nos.) by mechanical transport [Approx: 210 KM] including loading, unloading charges and all incidental charges etc. complete from Kaimanam Store [Trivandrum District] to site at GAVI in Pathanamthitta District and stacking of materials at the proposed tower site all complete [Approximately 0.18 MT]

Fabricating and supplying at site Shortage / Missing members/parts of 40M Angular GBT made of MS hot dipped galvanised angle sections /plates , flats etc. conforming to specifications of 40M GBT(Angular) as per tower design approved by SERC Gov't Of India and materials conforming to relevant IS codes as well as SERC recommendations.

Solid block masonry with precast machine moulded cement concrete solid block of size 300x200x150mm having minimum compressive strength of 35kg/sqcm and density not less than 1800kg/cum in cement concrete 1:5:10 ( 1 cement: 5 crused stone sand: 10 graded stone aggregate 12mm nominal size) with cement mortar 1:6 (1 cement:6 coarse sand) including scaffolding, racking out joints and filling joints with cement mortar, finishing neatly etc. upto floor V level.all complete as per the direction of Engineer-in-charge

12 mm cement plaster of mix :

(a) 1:6 (1 cement: 6 fine sand)

LAIQUE PP