Development and Upgradation of Existing Airport at Saharsa for Code-2B type of Aircraft.

Earth work in excavation by mechanical means (Hydraulic excavator of 0.9 cum bucket capacity) in all kinds of soil including all types of rocks excluding hard rock over areas including cutting and loading in tippers, trimming bottom and side slopes, in accordance with requirements of lines, grades and cross sections, transporting and unloading to the embankment/filling location within all lifts and lead upto 1000m. (Note: The quoted rate of the item shall be all inclusive irrespective of position of ground water table or natural moisture content of soil) (As per MoRTH specifications)

Construction of embankment with available excavated earth deposited at site from other locations with spreading, neatly leveling/ grading to required slope and compacting layer by layer to achieve the desired levels and compactions to meet the requirement of table 300-2 of MORTH specification etc. complete in all respects as per direction of Engineer-in-Charge. (Payment to be made for compacted quantity only).

Providing and laying good earth with approved material in layers not exceeding 20cm (loose) in thickness (each layer) and as directed by the Engineer-in charge. Breaking clods, watering, consolidating each layers with power road roller 8-10 tonne, under optimum moisture content to give density not less than that specified of the maximum modified standard proctor density at OMC including levelling, fine dressing to the required camber, grade and slope etc complete having CBR as instructed by Engineer-incharge. (payment to be made for the compacted quantity only). (As per MoRTH specifications)

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 0.075 mm ) to wet mix macadam (WMM) specification including premixing the material with water at OMC in mechanical mix plant, carriage of mixed material by tipper 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.

Providing and applying primer coat with bitumen emulsion SS1 grade conforming to IS:8887 on prepared surface of Granular Base including clearing of surface and spraying primer at the rate of 0.70 kg/sqm using mechanical means complete in all respects as per direction of Engineer-In-Charge. The contractor shall quote his rates assuming quantity of bitumen emulsion as 0.70 Kg/Sqm. If the actual quantity of bitumen emulsion varies from the quantity assumed above, necessary cost adjustment for deviation in the quantity of bitumen emulsion shall be done as per rate in actual supply voucher from nearest refinery at the time of execution. The rate of bitumen emulsion exclusive of GST shall only be considered for payment.

Providing and applying tack coat using bitumen emulsion (Rapid setting) complying with IS:8887, 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. 0.20 Kg/Sqm on existing bituminous surface.

Providing and laying of Hot Mix Dense Bituminous Macadam (DBM) using crushed stone aggregate of quality, size and grading as specified and Hydrated lime as filler and Viscosity Grade Bitumen (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 [for tendering purpose VG bitumen of grade VG-30 shall be taken as 110 kg/m3 of mix supplied in bulk produced by Govt. Refineries and 2% Hydrated lime (factory made) Not less than 80% Purity by weight of aggregates as filler material]. The necessary cost adjustment shall be made based on JMF and availability of filler.

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 as filler and Viscosity Grade Bitumen(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 [for tendering purpose VG bitumen of grade VG-30 content shall be taken as 120 kg/m3 of mix supplied in bulk produced by Govt. Refineries and 2% Hydrated lime (factory made) Not less than 80% Purity by weight of aggregates as filler material]. The necessary cost adjustment shall be made based on JMF and availability of filler.

Providing and laying of Hot Mix Dense Asphaltic Concrete (DAC) using crushed stone aggregate of quality, size and grading as specified and Hydrated lime as filler and Viscosity Grade Bitumen (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 [for tendering purpose VG bitumen of grade VG-30 content shall be taken as 135 kg/m3 of mix supplied in bulk produced by Govt. Refineries and 2% Hydrated lime (factory made) Not less than 80% Purity by weight of aggregates as filler material]. The necessary cost adjustment shall be made based on JMF and availability of filler.