Erection of 40M GBT at IIT Palakkad

Amount

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 sq.m. on plan) including disposal of excavated earth, lead upto 50 m and lift upto 1.5m, disposed earth to be levelled and neatly dressed

All kinds of soil

Ordinary rock including soft laterite

Hard laterite / Narikkal ( blasting prohibited)

Earth work in excavation by mechanical means (Hydraulic excavator)/ manual means in foundation trenches or drains ( not exceeding 1.50 m in width or 10 Sq.M on plan ) including dressing of sides and ramming of bottoms, lift upto 1.50 m including getting out the excavated soil and disposal of surplus excavated soil as directed with in a lead of 50 m

All kinds of soil

Extra for every additional lift of 1.5 m beyond initial depth of 1.50 m

All kinds of soil

Ordinary or hard rock

Filling available excavated earth ( excluding 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 1.50 m

Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering. All work upto plinth level

1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)

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 centring, shuttering, finishing and reinforcement - All work upto plinth level.

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

Centring and shuttering including strutting, propping etc and removal of form for

Foundations, footings, bases of columns etc for mass concrete

Lintels, beams, plinth beams, girders, bressummers and cantilevers

Columns, pillars, piers, abutments, posts and struts

Reinforcement for RCC works including straightening, cutting, bending, placing in position and binding all complete

Thermo-Mechanically Treated bars

Smooth finishing of the Exposed surfaces of RCC Work with 6mm thick cement mortar 1:3

1:3 ( 1 cement : 3 fine sand)

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 ) at plinth level with

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

Finishing walls with water proofing cement paint of required shade:-

New work ( 2 or more coats applied @ 3.84 Kg/Sq.M)

Supply of MS hot dipped galvanised bolts, nuts, washers etc. .of different sizes as specified for tower works.

Placing of anchor bolts in sets including templates including all labours and handling charges and checking with template in line level, plumb etc. as per the direction of Engineer-in-charge.

Supplying Anchor bolts for fixing base plate etc required at site as per specification.

Erection of Four Legged Light Weight Ground Based Communication Tower .

Providing gantry with galvanized MS angles, flats, channels, tees, pipes including cutting, drilling, welding, riveting, bolting, hoisting and fixing in position including embedding in cement concrete 1:2:4 (1cement : 2coarse sand : 4graded stone aggregate, 20mm nominal size)

Providing and applying paint of approved specification over the Four Legged Communication Tower indicated above. Apply two or more coats of enamel paint orange/white of approved brand and manufacture as directed by Engineer-in-charge.

Providing GI plate earth including excavation of pit of size 1500x1500x3000mm depth in all kinds of soil and placing four number of GI plate of size 600x600x6mm thick vertically diagonally opposite ends in the excavated pit and inter-connecting the plates with 4Nos of 50x3mm GI pipe of 50mm internal dia. (B class) and 3000mm length at the at the centre of the plate grid for watering and filling the pit with fine ash and or finally sieved good quality soil including ramming in 20cm layers etc. complete and cover the pit with the 750x750x50mm thick precast reinforced cement concrete slab having 100mm dia. hole at the centre to pass the GI pipe and

construct a chamber of internal size not less than 280x280x250mm with half brick wall including and fixing CI manhole cover of size 300x300mm of 7.20kg (cover & frame) and plastering the chamber on all sides with cement mortar 1:4 (1cement : 4fine sand) and including disposal of surplus excavated earth if any within a distance of 5km lead as directed by the Engineer-in-charge.

Providing GI bus bar 50x3mm connected to the tinned bottom portion of lightning conductor and to the ring earth/ plate earth with 2Nos. of 10mm dia. GI nuts & bolts (with lead sheath in between) at each connection . The buss bar shall be clamped to the tower/building walls at uniform interval of 1.50m using proper GI clamps and ceramic insulators such that the buss 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 GI strip of size 50x3mm one end connected to the tower leg with GI bolts and nuts ( with lead sheath in between) including providing and connecting the legs at the bottom of tower and other end shall be connected to the GI plate earth /ring earth with GI bolts and nuts (with lead sheath in between ) including clamping the down lead flat to wall/stems with out any sharp bends using necessary clamps and screws as directed by the Engineer -in charge.

Providing ring earth by excavating of trench of width 500mm and depth 1200mm depth and laying GI flats of size 50x3mm and jointing this flats with plate earth [vide item No.17] and jointing at corners with 2Nos. of 10mm dia. GI bolts and nuts with necessary (lead sheath in between) including refilling etc. as directed (All joints should be covered by Shalimar or equivalent water proof tape and made water tight)

Providing and fixing copper lightning conductor of 1500mm length, 25mm dia hollow tube of wall thickness not less than 1.6mm…including tinning the bottom portion of the spike for a length not less than 150 mm (lightning conductor to be fixed at the top of the tower) and connecting the GI bus bar to the lightning arrester using 2 Nos. 10 mm dia brass bolts and nuts 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]

C.Muralidharan (BID ID -784256)

SU SQUARE PROJECTES & INFRASRUCTURE (P)LTD (BID ID -783952)

ROCHBECK ESTATE PRIVATE LIMITED (BID ID -784292)