Operation and maintenance

Excavation for foundation in all kinds of soil including boulders upto 0.30 m diameter for dam, spillway, intake structure and other appurtenant works and placing the excavated soil neatly in dump area or disposing off the same as directed etc., complete with initial lead upto 1 km and all lifts as directed by the Engineer-In-Charge.

Providing and laying insitu vibrated M-15 ( 28 days cube compressive strength not less than 15 N/sq mm) grade cement concrete using 40 mm down size approved, clean, hard, graded aggregates including cost of all materials, machinery, labour, formwork, centering, scaffolding, cleaning, batching, mixing, placing in position, levelling, vibrating, finishing, curing etc.,complete for plain concrete works with initial lead upto 1 km and all lifts. ( Cement content : 260 kg / cum with use of super plasticiser, CA : 0.90 cum, Blending Ratio of CA 50:30:20, FA : 0.40 cum) as directed by Engineer-In-Charge.

Providing and laying insitu vibrated M-15 ( 28 days cube compressive strength not less than 15 N / sq mm ) grade cement concrete using 20 mm down size approved, clean, hard, graded aggregates including cost of all materials, machinery, labour, formwork, centering, scaffolding, cleaning, batching, mixing, placing in position, levelling, vibrating, finishing, curing etc.,complete for plain concrete works with initial lead upto 1 km and all lifts. ( Cement content : 280 kg / cum with use of super plasticiser, CA : 0.80 cum, Blending Ratio of CA -- 65:35, FA : 0.44 cum) as directed by Engineer-In-Charge.

Providing and laying insitu vibrated M-20 ( 28 days cube compressive strength not less than 20 N / sq mm ) grade cement concrete using 20 mm down size approved, clean, hard, graded aggregates including cost of all materials, machinery, labour, formwork, centering, scaffolding, cleaning, batching, mixing, placing in position, levelling, vibrating, finishing, curing etc.,complete for RCC works of spillway bridge, block outs and such other similar structures with conjested reinforcement with initial lead upto 1 km and all lifts. ( Cement content : 330 kg / cum with use of super plasticiser, CA : 0.80 cum, Blending Ratio of CA -- 65:35, FA : 0.44 cum) as directed by Engineer-In-Chrage.