Details: construction of granular sub-base by providing well graded material like natural sand crushed gravel or crushed stone having cbr >30, spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator or plant mix method at omc, and compacting with vibratory rollers of 80 to 100 kn static weight to achieve the desired density, complete as per clause 401 of specification. plant mix method. for grading-ii material supplying hard murum/ kankar at the road site, including conveying and stacking complete spreading hard murum/ soft murrum/ gravel or kankar for side width compete. consolidation of sub grade with power road roller of 8 to 10 tonne capacity , fressing to chamber and consolidating with road roller including making good the undulation etc. earth work in excavation in drain of required size and shape in ordinary soil soft rock, muddy soil etc. with the help of mechanical means by poclain etc. and disposal of excavated earth with a le
Sector: Mining