Improvement work of NDCC Phase -II Building.

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. (a) Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

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.

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Chipping of unsound/weak concrete material from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete as per direction of Engineer-In-Charge. 50 mm average thickness.

25 mm average thickness

Disposal of building rubbish/ malba/ similar unserviceable, dismantled or waste material by mechanical means, including loading ,transporting and unloading the same at any C&D waste management site within 25 kms lead i.e. Shastri park/ Burari/ Mundka including weighing at plant etc complete as per direction of Engineer in charge. Weighing and unloading at plant shall be as per procedures/rules of the plant management. The rates are inclusive of all operations, labours, lead and lifts from site of work to the C&D waste plant. The processing fee of C&D management at prescribed rates will be deposited by the agency and the same shall be reimbursed by department on production of only original cash receipts.

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) incuding manufactured sand derived from Recycled Concrete Aggregate (RCA) upto 20% : 3 graded stone aggregate 20 mm nominal size of Recycled Concrete Aggregate (RCA) upto 20%.

12 mm cement plaster of mix : 1:6 (1 cement: 6 fine sand)

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and direction of Engineer-In-charge complete in all respect. Epoxy bonding adhesive having coverage 2.20 sqm/kg of approved make

Shotcreting R.C.C. columns, beams and slabs etc. in layers with approved design mix concrete having the specified minimum characteristic compressive strength [with ordinary portland cement, coarse sand and graded stone aggregate of 10 mm maximum size in proportion as per design criteria] including the cost of centering and shuttering at edges and corners etc. as directed by Engineer- in-Charge(Note: Rates shall include the providing necessary ground wires etc. The levelling gauges, if used, shall be paid for separately. Payment under this item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by sounding/tapping with a blunt metal instrument.) 50mm thick in Grade M 25 with cement content not less than 330 kg per cum

25mm thick in Grade M 25 with cement content not less than 330 kg per cum