PRTRD_PDNA_ET_25_26_01 Recovery and Reconstruction of Lowairpoa-Kanmun RCC bridge approach of Bridge No.1/1 in Patharkandi LAC under NDRF (PDNA-2022) for the year 2025-26.

Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lifts and leads, transporting to site, spreading, grading to required slope and compacted to meet requirement of Table 300.2 with lead upto 1000 m as per Technical Specification Clause 303.1.(i) Private Land (For rstoration of side slopes of bridge approaches)

Providing and laying pitching on slopes laid over prepared filter media as per drawing and technical specifications Clause 1302(A) Stone/Boulder

Providing and laying filter material underneath pitching in slopes complete as per drawing and technical specifications Clause 1302.

Construction of RCC retaining wall- Earthwork in excavation for structures as per drawing and technical specifications Clause 305.1 including setting out, construction of shoring and bracing, removal of stumps and other deleterious material and disposal upto a lead of 50 m, dressing of sides and bottom and backfilling in trenches with excavated suitable material.

Providing concrete for plain/reinforced concrete in open foundation complete as per drawings and technical specification Clause 802 803 1202 & 1203.B.With natural Gravel.I. P.C.C grade M 10.(i) Nominal mix 1:3:6.

Supplying fitting and placing TMT bar reinforcement( Fe 415) in substructure complete as per drawings and technical Specification clauses 1002 and 1005

Plain/Reinforced cement concrete in sub stucture complete as per drawing and technical specification Clause 802,804,805, 806,807, and 1204. RCC.(A)With crushed stone aggregate I.I RCC M 20,(ii) Nominal mix(1:2:4) hand mixing

Construction of gabion wall- Earthwork in excavation for structures as per drawing and technical specifications Clause 305.1 including setting out, construction of shoring and bracing, removal of stumps and other deleterious material and disposal upto a lead of 50 m, dressing of sides and bottom and backfilling in trenches with excavated suitable material.Ordinary soil.Upto 3 m depth

Providing and laying wire created boulder structures boulder size 22.5 cm to 45 cm having 25 kg average weight for each i/c dumping/laying in S.W.G. Wire mesh of 10 cm x 10 cm (woven diagonally) 4mm dia i/c packing with small size stone spalls and carrying of boulders from a lead of 50 mtr and lift up to 1.5 mtr i/c lying properly the mesh by cutting the mouth and hoisting of wire where felt necessary as per direction of Engineer-in-Charge technical specifications Clause 1301.