External Development Work of Bus Stand At Silvassa, Dadra and Nagar Haveli

EXCAVATION upto 1.50 Metre for foundation such as footing, pedestals, walls, drains, columns, ramps, plinth beams, cable trenches in dense or Hard soil MECHANICALLY but other than hard rock including shoring, strutting, sorting out and stacking useful material, dewatering where required, cutting vegetation up to 1.5m ht if required and disposing off the excavated stuff upto all lead and lift. Note- All types of soil that can be removed by JCB/ Poclain bucket shall be classified under this item.

EXCAVATION 1.50 to 3.00 Metre for foundation such as footing, pedestals, walls, drains, columns, ramps, plinth beams, cable trenches in Hard Murrum MECHANICALLY but other than hard rock including shoring, strutting, sorting out and stacking useful material, dewatering where required, and disposing off the excavated stuff upto all lead and lift.

FILLING with selected & approved available excavated earth (exluding rock) in excavated pits, trenches, in plinth, sub-base for of roads, drains, manhole, sumps, or where required with approved locally available materials including spreading in layers not exceeding 200mm, watering, ramming, compacting mechanically using 2 ton compactor etc, complete. Measurements for net volume of space occupied by filling. If desired by the engineer-in-charge the contractor shall at his own expense carry out modified proctor compaction test to determine the maximum dry density. The criteria for acceptance of filling shall be compacting to 95% modified Proctor density with use of mechanical roller/rammer etc complete as directed and instructed by Engineer-in-charge. Volume of material filled to be measured for payment.

FILLING with selected & approved Murrum material brought by Contractor from outside client's premises, including Identification of Borrow pits and including Royalty charges & or duties as per requirement of local authority, in foundations, excavated pits, trenches, in plinth, sub-base for of roads, drains, manhole, sumps, or where required with approved locally available materials including spreading in layers not exceeding 200mm, watering, ramming, compacting mechanically using 2 ton compactor etc, complete. Measurements for net volume of space occupied by filling. If desired by the engineer-in-charge the contractor shall at his own expense carry out modified proctor compaction test to determine the maximum dry density. The criteria for acceptance of filling shall be compacting to 95% modified Proctor density with use of mechanical roller/rammer etc complete as directed and instructed by Engineer-in-charge. Volume of material filled to be measured for payment.

Boring holes 3.5 m deep in ordinary soil (for cast in situpiles) and getting out the soil and disposal of the surplusexcavated soil as directed within a lead of 50 Meter for following diameter of pipes (iii) 300 mm

Providing and laying RUBBLE SOLING wherever required in foundation and plinth including hand packing fillings interstices with chips and sand. Watering and compacting to consolidated thickness, etc complete as directed by engineer-in-charge

Providing and laying Granular sub­base (GSB) for preparing base of road by providing close graded Material, mixing in a mechanical mix plant at OMC(Optimum Moisture Content), 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.

Providing and laying PLAIN CEMENT CONCRETE 1:2:4 (1- Cement : 2- Coarse sand : 4- graded stone aggregates 20 mm nominal size) in foundations and superstructure including, machine mixing, leveling compacting, curing and formwork if any, scaffolding, staging etc. complete as directed and instructed by Engineer-in-Charge. Volume of PCC laid to be measured for payment.

Providing and laying Dry Lean Concrete (DLC) of M15 grade with coarse aggregate not exceeding 25 mm nominal size, including mixing in batching plant/approved mixer, transporting, laying, spreading, compacting with vibratory roller, and finishing to required line, level, grade and camber, complete as per specifications and direction of Engineer-in-Charge.

Providing and laying separation membrane of 125 micron thick polyethylene sheet of approved quality over prepared surface, including cleaning of surface, laying the sheet with proper alignment, and providing necessary overlaps (minimum 150 mm) at joints. The membrane shall be laid flat without wrinkles, folds, or creases and properly secured to prevent displacement during subsequent operations. The work includes cutting, jointing, and placing in position complete as per specifications and direction of the Engineer-in-Charge.