Emergent Restoration of Valley side and Hill side damages due to Flash Flood on 4th October 2023 within 35.20 Km to 49.90 Km of NH-10 under N.H. Division No.IX in the District of Kalimpong during the year 2023-24.

Amount

Bill of Quantities in Details

Excavation in Hilly Area in Soil by Mechanical Means: Excavation in soil in hilly area by mechanical means including cutting and trimming of side slopes and disposal of excavated earth with all lifts and lead upto 1000 metres (Reference to MoRT&H's specification clause 301).

PCC M-15 Grade: Plain/Reinforced cement concrete in open foundation complete all including vibrating and compacting, finishing, curing, sampling, testing etc. as per drawing and Technical Specifications (Reference to MORT&H's specifications 1500, 1700 & 2200). Use NB Variety Stone Aggregates & Concrete Mixer Machine with Hopper

Plum Concrete (1:3:6): Plain cement concrete of nominal mix (1:3:6 ) with coarse aggregate of which stone boulder of size 225mm to 150mm of 60% of total dry volume to be placed in position as directed by Eng-in-charge, 67% - 40mm down shingle 20mm down bazzri, Coarse Sand, Cement (53 grade) mechanically mixed in 1:3:6 of rest volume and placed in position and compacted by any means as directed including cost of shuttering. WITH CONCRETE MIXER WITH HOPPER

Boulder Apron Laid in Wire Crates : 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 percent 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). With Fresh supply of Stone boulder of size above 225mm

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 (RBM)

Providing weep holes in brick masonary/plain/ reinforced concrete abutment, wing wall/return wall with 100mm dia AC pipe, extending through the full width of the structure with slope of 1V:20H towards drawing foce. Complete as per drawing and technical specification (Reference to MORT&H'S Specification 2706 & 2200).

SANTALALL AND BROTHERS

MOHAN TAMANG