Special Repair (SR) Work for Restoration of Guide Bundh and Apron at Up Stream side of Leesh River Bridge

Excavation for Structures in Ordinary Rock (not required Blasting) by Mechanical Means and Depth upto 3 m Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom and backfilling with approved material (Reference to MORT&H's specification 304).

Boulder Apron laid in Wire Crates (i) Boulder Supplied by the Agency Providing and laying of boulder apron laid in wire crates made with 4mm dia wire dia not less than 4mm GI wire conforming to IS: 280 & IS:4826 in 100mm x 100mm mesh Mesh size not more than 150mm (weaved diagonally) including 10 per cent extra for laps and joints laid with stone boulders weighing not less than 40 kg each ( Tensile strength 300-450mpa, size of wire crates 3.0mx1.50mx1.25 m) (Reference to MORT&H's specification 2503).

Back filling Back filling behind abutment, wing wall and return wall complete including spriklring water and throughly compacted with plate compactor/power rammer in layers not exceeding 150mm compacted thickness as per drawing and Technical Specification (710.1.4 of IRC:78 & MoRTH's specification 2200) With Granular materials

Providing and laying Filter material underneath pitching in slopes complete Providing and laying Filter material underneath pitching in slopes complete as per drawing and Technical specification Gradation of filter , Thickness of filter 200/300 mm (Reference to MORT&H's specification 2504).

Providing and laying Pitching on slopes Providing and laying Pitching on slopes laid over prepared filter media including boulder apron laid dry in front of toe of embankment complete as per drawing and Technical specifications (Reference to MORT&H's specification 2504).Stone/Boulder.

P.C.C Grade M15 Plain/Reinforced cement concrete in open foundation complete as per drawing and technical specification (Reference to MORT&H's specification 1500,1700 & 2100).

Weep Holes Providing weep holes in Brickmasonry/Plain/ Reinforced concrete abutment, wing wall/ return wall with 100 mm dia AC/PVC/HDPC pipe, extending through the full width of the structure with slope of 1V :20H towards drawing foce. Complete as per drawing and Technical Specifications (Reference to MORT&H's specifications 2706 & 2200).

Construction of Embankment with Material obtained from Borrow pits Construction of embankment with approved material obtained from borrow pits with all lifts and leads, transporting to site, spreading, grading to required slope and compacting to meet requirement of table 300-2 & 300-1 . The size course material in the mix of earth ordinarily shall not be exceed 75mm.(Reference to MoRT&H's specification clause 305).