Construction of 05 nos Remote Apron Parking Bays for Code C type of Aircraft and Expansion of existing apron for additional two Aircraft of category C ATR 72 at Coimbatore International Airport.

Amount

Civil & Electrical

Excavation in soil with hydraulic excavator including cutting & loading in tippers, trimming bottom and side slopes in accordance with requirement of line, grades and cross section and transporting and unloading to the disposal location(s) including levelling and neatly dressing of disposed soil completely as directed by Engineer-In-Charge with all lifts and lead within Airport Premises. All kinds of Soil

Construction of Subgrade embankment with Moorum brought out from approved quarry out side the airport premises. The complete operation will include spreading the Moorum with dozer, dressing, levelling, providing camber, grading with motor grader and consolidating with vibratory roller 8-10 tonne capacity including making good the undulation etc. as per technical specifications and drawings complete and directions of Engineer-in-Charge. (Cost includes all leads ,taxes, royalty and operations)

Preparation of granular sub-base by providing close graded material, conforming to specifications mixing in a mechanical mix plant at OMC, carriage of mixed material by mechanical transport to work site, for all leads and lifts, spreading in uniform layers of specified thickness with mechanical means including neatly leveling & dressing on prepared surface and compacting with vibratory power roller to achieve the desired density, complete and as per direction of Engineer-in-charge.

Providing, laying, spreading and compacting graded stone aggregate (size range 53 mm to 0.075mm) to wet mix macadam(WMM) specification including premixing the material with water at OMC in mechanical mix plant, carriage of mixed material by mechanical transport to site, for all leads & lifts, laying in uniform layers with mechanical paver finisher in sub-base/ base course on well prepared surface and compacting with vibratory roller of 8 to 10 tonne capacity to achieve the desired density, complete as per specifications and directions of Engineer-in-charge

Construction of dry lean cement concrete sub base over a prepared sub-grade with coarse and fine aggregate conforming to IS:383, the size of coarse aggregate not exceeding 25 mm, aggregate cement ratio not to exceed 15:1, aggregate gradation after blending to be as per specifications, cement content not to be less than 150 Kg/cum, optimum moisture content to be determined during trial length construction, concrete strength not to be less than 10 Mpa at 7 days, mixed in a batching plant, transported to site, for all leads & lifts, laid with a mechanical paver, compacting with 8-10 tonne vibratory roller, finishing and curing etc. complete as per direction of Engineerin- charge.

Providing and laying polythene sheet (white in colour) of thickness 400 micron conforming to IS: 2508, on the base course with overlaps of not less than 300mm longitudinally and 300mm transversely over and including a base layer of 6mm thick fine sand complete as per specifications and as directed by Engineer‐in-charge (Note- Only plan area of polythene sheet shall be measured for payment. Nothing extra shall be payable for overlaps.)

Providing and laying Pavement Quality Concrete (PQC) produced in a batching plant having a Characteristic flexural strength i.e. minimum flexural strength of 4.1 MPa at 28 days using 350 Kg of Ordinary Portland Cement (OPC-43 grade) , fine aggregate, graded stone aggregates of 40 mm nominal size in appropriate proportion as per specification and job mix formula, laid in panels as per drawings/design as approved by the Engineer-In-Charge, using slip form paver including making necessary provision for expansion joint, curing, etc. complete as per direction of Engineer-in-Charge and particular specifications. The item for execution shall also include the following operations: i) Mechanically cutting dummy joints 3mm wide x 1/3rd thickness of slab which is subsequently widened to 10 mm for the top 25mm depth and construction joints 10mm wide x 25mm deep as per specification. ii) Filling Polysulphide sealant in dummy, construction and expansion joints including providing closed-cell Polyethylene foam back-up rod, and painting side of joints with Polysulphide primer, etc. complete (to be paid separately under item 9 & 10). Note: For the purpose of tendering, the quantity of cement used for one Cum. of finished concrete may be assumed as 350 Kg. If the actual quantity of cement required as per laboratory mix design varies from the quantity assumed above, necessary cost adjustment for deviation in the quantity of cement as per mix design, if any, shall be done as per the rate of cement in actual supply voucher from manufacturer/authorized dealer at the time of execution. In the case of authorized distributor the rate may be authenticated by the manufacturer. The rate of cement exclusive of GST Shall only be considered for payment.

Providing and laying in position for expansion joint, 25mm thick pre-cut Synthetic joint filler board of approved make conforming to IS:1838(part 3)-2011, 45 mm from top (to be removed at the time of filling of Polysulphide sealant), complete as per particular specifications and directions of Engineer-in-charge. (Note: Mode of measurement shall be length of joint multiplied by depth of filler board including precut portion.)

Providing and laying in position Polysulphide sealant of approved make conforming to BS-5212-1990 or IS: 11433-1995. in expansion/ construction/dummy joints including rounding off edges, applying 2 coats of approved primer compatible with the brand of Polysulphide and preparing the surface and applying masking tape along the edge of joint to prevent accidental spillage of sealant on top surface and to give neat finish to the sealant and removing the masking tape after application of sealant etc. complete as per direction of Engineer in-Charge & particular specifications. i) Expansion Joints of size 25 mm wide and 10 mm deep over 30 mm dia closed-cell Polyethylene foam back-up rod, as per manufacturers specifications and sketch at Appendix A. [Note: For purpose of payment, quantity (Length x Width x Depth) of Polysulphide sealant only will be measured.]

Providing and laying in position Polysulphide sealant of approved make conforming to BS-5212-1990 or IS: 11433-1995 in expansion/ construction/dummy joints including rounding off edges, applying 2 coats of approved primer compatible with the brand of Polysulphide and preparing the surface and applying masking tape along the edge of joint to prevent accidental spillage of sealant on top surface and to give neat finish to the sealant and removing the masking tape after application of sealant etc. complete as per direction of Engineer in-Charge & particular specifications. i) Construction Joints of size 10 mm wide and 10 mm deep over 12 dia closed-cell Polyethylene foam back-up rod, as per manufacturers specifications and sketch at Appendix-‘A’. ii) Dummy Joints of size 10 mm wide and 10 mm deep over 12 mm dia closed-cell Polyethylene foam back-up rod, as per manufacturer’s specifications & Sketch at Appendix 'A'. [Note: For purpose of payment, quantity (Length x Width x Depth) of Polysulphide sealant only will be measured.]

Demolishing cement concrete in pavement manually/ by mechanical means including disposal of material with all leads and lifts within airport premises including levelling and neatly dressing of disposed material within airport premises completely as directed by Engineer-In-Charge.

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within airport premises as per direction of Engineer-in-charge. In Cement Mortar

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering- All work upto plinth level (a)1:5:10 (1 cement: 5 coarse sand : 10 graded stone aggregate 40mm nominal size)

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering- All work upto plinth level (a)1:3:6(1 cement: 3 Coarse sand (zone III)::6 graded stone aggregate 40 mm nominal size)

Providing and laying in position machine batched and machine mixed design mix M-25 grade cement concrete for reinforced cement concrete work, using cement content as per approved design mix, including pumping of concrete to site of laying but excluding the cost of centering, shuttering, finishing and reinforcement, including admixtures in recommended proportions as per IS: 9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability as per direction of Engineer-in-charge.“(Note :- Cement content considered in this item is @ 330 kg/cum.“Excess/ less cement used as per design mix is payable/recoverable separately). All works upto plinth level

Extra for providing richer mixes at all floor levels. Note:- Excess/less cement over the specified cement content used is payable /recoverable separately. Providing M-30 grade concrete instead of M-25 grade BMC/ RMC. (Note:- Cement content considered in M-30 is @ 340 kg/ cum)

Centering and shuttering including strutting, propping etc. and removal of form for all heights : Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

Centering and shuttering including strutting, propping etc. and removal of form for all heights : Suspended floor, roofs, landing, balconies and acess platforms

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. Thermo-Mechanically Treated bars of grade Fe-500D or more

Cement concrete flooring 1:2:4 (1 cement:2 Coarse sand:4 graded stone aggregate) finished with floating coat of neat cement including cement slurry but excluding the cost of nosing of steps etc. complete. 40 mm thick with 20mm nominal size stone agregate

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

Steel work welded in built up section/framed work including cutting, hoisting and fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required. In gratings, frames, guard bar, ladder, railing, brackets and similar works.

Painting runway/taxi track/apron marking with adequate nos of coats to give uniform finish with road marking paint of superior make as approved by the Engineer-in-charge, i/c cleaning the surface of ail dirt, scales, oil, grease and other foreign mater;al etc. and lining out complete.New work (Two or more coats)

Providing and laying factory made chamfered edge Cement Concrete paver blocks In foot path, park & lawns driveway or light & traffic parking etc. of required strength, thickness & size/ shape, made by table vibratory method using PU mould, laid in required colour & pattern over 50mm thick compacted bed of course sand, compacting and proper embedding/laying of inter locking paver blocks into the sand bedding layer through vibratory compaction by using plate vibrator, filling the joints with sand and cutting of paver blocks as per required size and pattern, finishing and sweeping extra sand, all complete as per manufacturer's specifications & direction of Engineerin- Charge. 80 mm thick cement concrete paver block of M-30 grade with approved colour, pattern and design.

Providing and laying Non Pressure NP-4 class (Heavy duty) R.C.C. pipes including collars/spigot jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete 600 mm dia RCC pipes.

Supply of CI Transformer Housing Box water tight, round shape of outside dia 330mm height 450mm made of 10mm thick all round except on top surface which is 15mm thick having a clear opening of 220mm at the top surface and 6 Nos. M10 tapped holes at the hole centre of 260mm to receive light fittings base plate and bolts. The box shall have a clear hole at two side surface, centre at 75mm above bottom surface and suitable to receive 50mm dia B class GI pipes and check nuts, and also have a clear hole on two side surface from centre at 175mm above bottom suitable to receive 15mm dia B class G.I pipes and check nuts. The box shall have two earth bolts of M 10 X30mm inside near the hole(100mm above bottom surface) and a drain hole at the bottom suitably tapped to receive 1/2" dia., B class GI pipe as per drawing as required. (Double Hole).

Supply of 50 mm dia "B" class GI pipe.

Installation of Transformer Housing Box with a base concrete of 1:3:6 of size 630 x 630 x 100mm thick all round concrete of 1:2:4, 150mm thick top sloped with 1:2:4 cement concret including excavation of existing soil of runway sholder/ basic strip, disposal of excavated material within 50 mtrs lead, providing and fixing 300mm long 15mm dia "B" class GI pipe with check nut for drainage of water including excavation of side shoulder and refilling. The boxes are aligned in such way thst the hole centres fall in straight line etc., complete as required.

Laying of 50 mm dia GI pipe to connect the consecutive existing transformer housing box at a suitable depth i/c providing the socket, lock/check nut/any other suitable assessory at both sides of transformer housing wall to fix the pipe. The laying shall be in hard surface/soft soil including getting out the excavated materials, returnig the soil as required in layers not exceeding 20 cm in depth including consolidating each deposit layer by ramming & watering etc., making good the same & disposal of unusable material etc. as required as per the direction of engineer in charge.

VISHAL INFRASTRUCTURE LTD

SBG Infracon Pvt. Ltd.