Strengthening of WBM road at MATHRA end road at Sasti Expansion OCM under Sasti Sub Area

Amount

Construction of embankment with approved materials having CBR >7 obtained from borrow pits with all lead and lift transporting to site ,spreading, grading to required slope and compacting to meet requirement of table 300-1, 300-2 and as per relevant clauses of section -300

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. (A) Plant Mix Method For Grading-I Material

Water Bound Macadam. Providing laying spreading and compacting stone aggragate of specifc sizes to water bound macadam specifications including spreading in uniform thickness , hand packing, rolling with vibratory roller 8-10 T in stages to proper grade and camber , applying and brooming requisite type of screenings / binding materials to fill up the interstices of coarse aggregate watering and compacting to the required density as per clause 404 of specifications. ( B ) By mechanical means, Grading I ( 63 mm to 45 mm ) using type B screenings ( 13.2 mm ). ( Note : for one 1.00 cum of compacted thickness contractor have to supply following materials 63 mm to 45 mm aggregate = 1.21 cum screenings 13.20 mm = 0.24 cum stone dust = 0.08 cum ).

Providing and laying surface dressing as wearing course in single coat using crushed stone aggregates of specified size on a layer of bituminous binder laid on prepared surface and rolling with 8-10 tonne smooth wheeled steel roller all complete as per clause 509 of specification with 19 mm nominal chipping size & bitumen @1.2kg per sqm.

Total impact of GST for the purpose of CTC

M.V.K Engineering Services

Sandeep Jain