Grading and strengthening of Runway side strip 2022-23

Amount

Clearing jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth upto 30 cm measured at a height of 1 m above ground level and removal of rubbish upto a distance of 5 km outside the periphery of the area cleared and as directed by the Engineer-in-Charge.

Excavating, and filling of available local earth by mechanical transport up to a lead of 7 km, spreading the same, grading using motor grader, also including ramming and watering of the earth in layers not exceeding 20 cm in depth, breaking clods, rolling each layer with vibratory roller of minimum 8 -10 tonnes, levelling and fine dressing, to the required camber, grade and slopes etc. complete. (The rate of the item includes excavating, transporting locally available earth up to a lead of 7 km and filling the same at the Runway strip, spreading and grading using motor grader for slope correction of the ground, and consolidating the same using vibratory roller of 8-10 tonnes capacity after water rolling)

Construction of granular sub-base by providing close graded material conforming to specifications of Grade-I (size range 75 mm to 0.075 mm) having CBR Value-30, 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.