Anti-Erosion work over Pachin river from DPS bridge point Rechi to Pagatara under Itanagar, Arunachal Pradesh

Amount

RCC COUNTERFORT RETAINING WALL

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, backfilling and excavation earth to the extent required and utilising the remaining earth locally by mechanical means.

PCC 1:3:6 in Foundation (Plain cement concrete 1:3:6 mix with crushedstone aggregate 40 mm nominal size mechanically mixed, placed in foundation and compacted by vibration including curing for 14 days.

Plain/Reinforced cement concrete in sub-structure complete as per drawing and technical specifications RCC Grade M25

Supplying, fitting and placing HYSD bar reinforcement in substructure complete as per drawing and technical specifications

Providing weep holes in Brick masonry/Plain/ Reinforced concrete abutment, wing wall/return wall with 100 mm 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 specifications

Providing and laying of Filter media with granular materials/stone crushed aggregates satisfying the requirements laid down in clause 2504.2.2. of MoRTH specifications to a thickness of not less than 600 mm with smaller size towards the soil and bigger size towards the wall and provided over the entire surface behind abutment, wing wall and return wall to the full height compacted to a firm condition complete asper drawing and technical specification.

Providing & fixing 20 mm thick compressible fibre board in expansion joint complete as per drawing & Technical Specification.

SH : Launching Apron

Gabian Structure for Erosion Control, River Training Works and Protection works (Providing and constructing gabain structures for erosion control, river training works and protection works with wire crates of size 2 m x 1 m x 0.3 m each divided into 1m compartments by cross netting, made from 4 mm galvanised steel wire @ 32 kg per 10 sqm having minimum tensile strength of 300 Mpa conforming to IS:280 and galvanizing coating conforming to IS:4826, woven into mesh with double twist, mesh size not exceeding 100 mm x 100 mm, filled with boulders with least dimension of 200 mm, all loose ends to be securely tied with 4 mm galvanised steel wire.)

SH : River Diversion Work

Earth work in excavation in foundation trenches not exceeding 1.50 m width or 10 Sq.m. on plan or drains not exceeding 1.50 m in width or 10 Sq.m. on plan including dressing of sides and ramming of bottoms, lift upto 1.50 m including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m

Excavation in foundation trenches not exceeding 1.50m width or 10Sq.m.on plan or drains not exceeding 1.50 m in width or 10 Sq.m. on plan including dressing of sides and ramming of bottoms,liftup to 1.50m including getting out the excavated soilas directed,within a lead of 50 m.

M/s Samco Construction Co. (BID ID -6447)

Redwood Planning and construction Private Limited (BID ID -6421)