Repairing and Maintenance of damaged existing water drain and gabion structure located at upper side of Left and Right Bank of Baira Dam, Baira Siul Power Station

Surface dressing of the ground including removing vegetation and in-equalities not exceeding 15 cm deep and disposal of rubbish, leadup to 50m and lift upto 1.5 m. All kinds of soil

Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth,1.5 m in width as well as10 sqm on plan) including getting out and disposal of excavated earth lead upto 50mand liftupto1.5m,as directed by Engineer-in-charge. All kinds of soil.

Random rubble masonry with hardstone in foundation andplinth including levellingupwithcement concrete 1:6:12 (1cement : 6 coarsesand : 12gradedstone aggregate 20 mm nominal size) upto plinth level with :Cement mortar 1:6 (1 cement : 6 coarse sand)

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level :1:1½:3 (1 Cement: 1½ coarse sand) : 3 graded stone aggregate 20 mm nominal size)

Centering and shuttering including strutting, propping etc. and removal of form for :Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level.Thermo-MechanicallyTreatedbarsofgrade Fe-500D or more.

15mmcement plaster on roughsideof singleor half brick wall of mix: 1:4 (1 cement: 4 coarse sand)

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 coated, Mesh wire diameter 3.0 mm, 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 2.2mm, supplied @ 3% by weight of Gabion boxes, filled with boulders with least dimension of 200 mm, as per drawing, all complete as per direction of Engineer-in-charge.