Left bank slope protection measures from RD 10.00M downstream of Dam axis to RD 40.00M upstream of Dam axis EL 583.00M to EL 640.00M at Dam site of Teesta-V Power Station Package-I

Amount

Clearing jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth upto 30 cm measured at a height of 1 m above ground level and removal of rubbish upto a distance of 50 m outside the periphery of the area cleared.

Excavation in soil in hilly area by mechanical means including cutting and trimming of side slopes and disposing of excavated earth with all lifts and lead up to 1000 meters.

Excavation in hilly area in ordinary rock not requiring blasting by mechanical means including cutting and trimming of slopes and disposal of cut material with all lift and lead upto 1000 meters.

Manual Scaling of unapproachable area on slided hillslope including removal of all the loose materials and disposal of the same at specified location.

Supply, Drilling, fixing and grouting of Rock anchor 25mm dia 4m long complete in all respect including all the materials, equipments and manpowers required.

Supply, Drilling, fixing and grouting of Rock anchor 32 mm dia 6 to 9 m long as per drawings, complete in all respect including all the materials, equipments and manpowers required.

Extension of specified length of rockbolt into concrete as per construction drawings,complete in all respect including all the materials, equipments and manpowers required.

Providing and fixing double scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40 mm dia M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps and M.S. staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it there after .The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and approval of Engineerin-charge .The elevational area of the scaffolding shall be measured for payment purpose.

Reinforced cement concrete including shuttering, compacting and curing complete in sub-structure complete as per drawing and technical specifications. RCC Grade M25. Height upto 5m. Using concrete Mixer.

Reinforced cement concrete including shuttering, compacting and curing complete in sub-structure complete as per drawing and technical specifications. RCC Grade M25. Height 5m to 10m. Using concrete Mixer

Reinforced cement concrete including shuttering, compacting and curing complete in sub-structure complete as per drawing and technical specifications. RCC Grade M25. Height above 10m. Using concrete Mixer.

Plain cement concrete including shuttering, compacting and curing complete in sub-structure complete as per drawing and technical specifications. PCC Grade M20.

Supplying, fitting and placing HYSD bar reinforcement in sub-structure complete as per drawing and technical specifications.

Drillling of 45 MM drainge hole as per drawings and technical specifications.

Supply & Installation of perforated PVC pipe 40 mm dia.

Providing & making Gabion structure with Mechanically Woven Double Twisted Hexagonal Shaped Wire mesh Gabion Boxes as per IS 16014:2012,MORTH Clause 2500, of required size, Mesh Type 10x12(D=100 mm with tolerance of ± 2%) Zinc+PVC coated, Mesh wire diameter2.7/3.7mm, mechanically edged/selvedged with partitions at every 1m interval and shall have minimum 10 numbers of openings per meter of mesh perpendicular to twist, tying with lacing wire of diameter 2.2/3.2mm(ID/OD), supplied @3% by weight of Gabion boxes, filled with boulders with least dimension of 200 mm, as per drawing, all complete as per directions of Engineer- In-charge.

Providing and laying HDPE bag filled with sand, all complete as per direction of EIC.

Structural steel work in single section, fixed with or without connecting plate,including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete

Providing weep holes in Brick masonry/Plain/ Reinforced concrete abutment, wing wall/ return wall with 160 mm dia PVC pipe, extending through the full width of the structure with slope of 1V :20H towards drawing face. Complete as per drawing and Technical Specifications.