34/EET/BSNL/TVM/2024-25

Amount

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level :

1:1.5:3 (1 cement : 1.5 coarse sand (zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

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-Mechanically Treated bars of grade Fe-500 D or more.

Steel work welded in built up section framed work including cutting hoisting fixing in position and applying a priming coat of approved steel primer usisng structural steel etc as required.

In stringers, treads,landing etc. of stair cases, including use of chequered plate where evre rquired all complete.

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge.

Raising / Lowering of manhole RCC cover slab and frame upto 20 cm height to keep in alignment with the new road surface consisting of the following operations.

Earth work in excavation/ Cutting bituninous surface around chamber side walls including dismantling bituminous road if any required

Removing and stacking within 50 meter lead the RCC rectangular manhole cover [upto 3 Nos each of sizes upto 0.50X1.20m] protected on all edges with frame of galvanized angle section

Dismantle the chamber wall [made of RCC wall of thickness 300mm upto the required depth for removal of frame and down clamps.

Keep the dismantled outer frame with clamps in position and in alignment to the new road level and place the shuttering on side walls.

Place the concrete of mix 1:1.5:3 (1 cement :1.5 coarse sand :3 graded stone aggregate 20 mm nominal size] on side walls for fixing outer frame.

Making good the damages by plastering the inside and outside of the neck and refixing the covers in position

The rate includes all the above operations of dismantling concrete, stacking of RCC cover and frame shuttering, setting available frame and RCC covers in position, providing RCC, plastering, curing, making barricades, traffic signals etc complete all as directed by the Engineer -in- Charge.The rate is also inclusive for the earth work and dismantling bituminous raod if any required

1.80m x 1.20m size

1.35m x 1.20m size

Raising of manhole cast iron cover slab and frame(Weighing 105Kg) to keep in alignment with the new road surface consisting of the following operations.

Removing and stacking within 50 metre lead ( 105Kg cast iron manhole cover [0.70mtr dia]

Dismantle the manhole neck [made of RCC wall of outer dimension 1.30X1.30 m with 0.30 m side walls] upto the required depth for removal of frame and down clamps

Place the concrete of mix 1:1 1/2:3[1 cement:1 1/2 coarse sand:3 graded stone aggregate 210 mm nominal size] on side walls for fixing outer frame with adequate quantity of steel reinforcement.

Making good the damages by plastering the inside and outside of the neck and refixing the cast iron covers in position

The rate includes for all the above operations of dismantle bitumen road,dismatle concrete, stacking of cast iron cover & frame, shuttering, setting available frame and cast iron cover in position , providing RCC with reinforcement , plastering, curing. making barrick, traffic signals etc complete all as directed by the Engineer-in-Charge.(Nothing extra shall be paid)

Laying available RCC precast slabs in position carefully for replacing the damaged one using necessary tools, and equipments without causing damages to the cables and other service lines if any in the manhole including tking out and transportation of the slabs from the locations shown by the Engineer in Charge.

Credit for available dismantled steel sections.

RAJAKUMAR P (BID ID -825868)