Construction of New Taxiway between Apron, Hangar - II and Runway 12 end for FIU Fleet at Safdarjung Airport, New Delhi

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 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and for all lift, as directed by Engineer-in-charge. a) All kinds of soil

Filling available excavated earth (excluding rock) in over areas, 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 and for all lift.

Clearing jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth up to 30 cm measured at a height of 1 m above ground level and removal of rubbish up to a distance of 50 m outside the periphery of the area cleared.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 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)

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 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)

Preparation and consolidation of sub grade to acheive desired density with power road roller of 8 to 12 tonne capacity after excavating earth to an average of 22.5 cm depth, dressing to camber and consolidating with road roller including making good the undulations etc. and re-rolling the sub grade and disposal of surplus earth/debris with lead upto 50 metres.

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 material etc. and lining out complete. a) New work (Two or more coats)

Providing and laying non-pressure NP2 class (light duty) R.C.C. pipes with collars jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete : a) 300 mm dia. R.C.C. pipe

Providing and laying of Hot Mix Dense Asphaltic Concrete (DAC) using crushed stone aggregate of quality, size and grading as specified and Hydrated Lime filler as specified and Viscosity Grade Bitumen VG- 30 (supplied in bulk) in proportions as per job mix formula and laid to specified levels, grade and camber as per specification, drawings and as directed by the Engineer-in- Charge including compacting with 8-10 tonne, referably vibratory road roller of adequate capacity to achieve the specified values of compaction, strength, surface accuracy complete [Bitumen content shall be taken as 135 kg/m3 of mix supplied in bulk produced by Govt. Refineries and 2% hydrated lime by weight of aggregates as filler material].

Providing and laying of Hot Mix Semi Dense Asphaltic Concrete (SDAC) using crushed stone aggregate of quality, size and grading as specified and hydrated lime filler as specified and Viscosity Grade Bitumen VG-30 (supplied in bulk) in proportions as per job mix formula and laid to specified levels, grade and camber as per specification, drawings and as directed by the Engineer-in- Charge including compacting with 8-10 tonne, preferably vibratory road roller of adequate capacity to achieve the specified values of compaction, strength, surface accuracy complete [Bitumen content shall be taken as 120 kg/m3 of mix supplied in bulk produced by Govt. Refineries and 2% hydrated lime by weight of aggregates as filler material].

Construction 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 tippers to work site, for all leads & lifts, spreading in uniform layers of specified thickness with motor grader on prepared surface and compacting with vibratory power roller to achieve the desired density, complete as per specifications and directions of Engineer-in-Charge. a) With material conforming to Grade-I specifications (Size range- 53 mm to 0.075mm)

Providing, laying, spreading and compacting graded stone aggregate (size range 53 mm to 0.075 mm ) to wet mix macadam (WMM) specification including premixing the material with water at OMC in mechanical mixer plant including carriage of mixed material by tipper to site for all leads & lifts, laying in uniform layers with grader 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.

Providing and applying tack coat using low viscosity paving bitumen of VG 10 grade conforming to IS:73, spraying the bitumen with mechanically operated spray unit at the rate specified below, cleaning and preparing the existing pavement surface as per specifications complete in all respects as per direction of Engineer-In-Charge. If the actual quantity of bitumen varies from the quantity specified, necessary cost adjustment for deviation in the quantity of bitumen shall be done as per rate in actual supply voucher from nearest refinery at the time of execution. The rate of bitumen exclusive of GST shall only be considered for payment.

Tack Coat on existing bituminous surface pavement with Paving Bitumen VG-10 @ 0.20Kg/Sqm

Tack Coat on existing cement concrete / WMM pavement with Paving Bitumen VG-10 @ 0.30Kg/Sqm

Supplying & filling good earth brought out from approved quarry outside the Airport premises including all leads/royalty etc. complete (Excluding Rock) in embankments, depressions etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by watering & ramming with 0.5 tonne roller and every 3rd & topmost layer with 8-10 tonne vibratory roller etc. complete as per direction of Engineer-in-Charge.

A. S. Infratech

R.K.GOEL ABHEY KUMAR JAIN