Balance Civil works for Turn Pad and Runway Painting work at Muirpur Airport, Sonbhadra, U.P. (Re-Call)

Civil Works

Excavation for earth work in all kinds of soil with hydraulic excavator of 0.90 cum bucket capacity including cutting and loading in tippers, trimming bottom and side slopes in accordance with requirement of line grades & cross section, transporting to the embankment location with all lifts & leads within airport premises including unloading etc. complete as per technical specification & direction of Engineer-in-Charge.

Preparation and consolidation of sub grade 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 earthwith 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. New work (Two or more coats)

Construction of granular sub-base by providing close graded material mixing in a mechanical mix plant at OMC, Carriage including all leads and lifts of mixed material to work site , spreading in uniform layers with moter grader on prepared surface and compacting with vibratory power roller to achive the desired desity complete as per clause 401 , (i) For grading V material to complete as per specifications and direction of engineer incharge.

Providing laying spreading and compacting grade stone aggregate 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 and lifts layng in uniform layers with mechanical paver finisher in sub-base/ base course on well prepared surface and compacting with vibratory roller to achieve the desired density complete as per specification and direction of Engineer -in charge.

Disposal of road material like GSB, WMM, DBM, Concrete Pavement etc. similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved location by Engineer-in-charge, beyond 50 m initial lead,for upto 4 km leads including all lifts involved

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 quanity 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 laying of Hot Mix Dense Bituminious Macadam(DBM) using crushed stone aggregate of quality, size and grading as specified and cement as filler of quality as specified 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% cement by weight of aggregates as filler material].

Providing and applying tack coat using suitable low viscosity paving bitumen of grade VG - 10, confirming IS : 73 spraying the bitumen with mechnically operated spray unit at the rate specified below, cleaning and preparing the existing pavement surface as per specification complete in all respect as per direction of EIC . 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. (a). 0.20 Kg / sqm On existing bituminous surface