Strengthening of road between Madhusudanpur siding and Kishor siding at Porascole Colliery under Kajora Area

Item Description/ Heading

Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and for all lift, as directed by Engineer-in-charge. All kinds of soil

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 1:2:4 (1 cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Providing and laying Non Pressure NP-3 class (Medium duty) R.C.C. pipes including collars/spigot jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete 450 mm dia RCC pipes.

Compacting Original Ground: Compacting original ground supporting subgrade: Loosening of the ground upto a level of 500 mm below the sub-grade level, watered, graded and compacted in layers to meet requirement of Table 300-2 for sub-grade construction.

Granular Sub-Base with Graded Material (Table:- 400-1): Plant Mix Method: Construction of granular sub-base by providing close graded Material, mixing in a mechanical mix plant at OMC, carriage of mixed Material to work site, spreading in uniform layers with motor grader on prepared surface and compacting with vibratory power roller to achieve the desired density, complete as per clause 401: For Grading-III Material

Granular Sub-Base with Graded Material (Table:- 400-1): Plant Mix Method: Construction of granular sub-base by providing close graded Material, mixing in a mechanical mix plant at OMC, carriage of mixed Material to work site, spreading in uniform layers with motor grader on prepared surface and compacting with vibratory power roller to achieve the desired density, complete as per clause 401: For Grading-V Material

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 infor all leads & lifts, laying in uniform layers with mechanicalpaverfinisher in sub- base / base course on well prepared surfaceand compacting with vibratory roller of 8 to 10 tonne capacity toachievethe desired density, complete as per specifications anddirections of Engineer-in-Charge.

Providing, laying, and spreading iron slag with water for all leads & lifts, laying in uniform layers complete as per specifications and directions of Engineer-in-Charge.

Enagagement of Backhoe Loader equivalent to JCB (minimum loader Capacity - 1.0 cum, minimum backhoe Capacity -0.26 cum , including POL and Driver)