Construction of RCC Retaining Wall and Compound Wall for Protection and Safety of Chikhaldapada School Premises Against Soil Erosion and Slope Failure At Chikhaldapada School

EXCAVATION upto 1.50 Metre for foundation such as footing, pedestals, walls, drains, columns, ramps, plinth beams, cable trenches in dense or Hard soil MECHANICALLY but other than hard rock including shoring, strutting, sorting out and stacking useful material, dewatering where required, cutting vegetation up to 1.5m ht if required and disposing off the excavated stuff upto all lead and lift. Note- All types of soil that can be removed by JCB/ Poclain bucket shall be classified under this item.

EXCAVATION 1.50 to 3.00 Metre for foundation such as footing, pedestals, walls, drains, columns, ramps, plinth beams, cable trenches in Hard Murrum MECHANICALLY but other than hard rock including shoring, strutting, sorting out and stacking useful material, dewatering where required, and disposing off the excavated stuff upto all lead and lift.

FILLING with selected & approved Murrum material brought by Contractor from outside client's premises, including Identification of Borrow pits and including Royalty charges & or duties as per requirement of local authority, in foundations, excavated pits, trenches, in plinth, sub-base for of roads, drains, manhole, sumps, or where required with approved locally available materials including spreading in layers not exceeding 200mm, watering, ramming, compacting mechanically using 2 ton compactor etc, complete. Measurements for net volume of space occupied by filling. If desired by the engineer-in-charge the contractor shall at his own expense carry out modified proctor compaction test to determine the maximum dry density. The criteria for acceptance of filling shall be compacting to 95% modified Proctor density with use of mechanical roller/rammer etc complete as directed and instructed by Engineer-in-charge. Volume of material filled to be measured for payment.

Providing, supplying and placing clean, hard, graded drainage gravel (20–40 mm or as specified) behind retaining walls, including spreading, leveling, compaction (where required), and all labour, transportation, loading, unloading and incidental works complete as per drawings and specifications.

Providing and laying PLAIN CEMENT CONCRETE 1:2:4 (1- Cement : 2- Coarse sand : 4- graded stone aggregates 20 mm nominal size) in foundations and superstructure including, machine mixing, leveling compacting, curing and formwork if any, scaffolding, staging etc. complete as directed and instructed by Engineer-in-Charge. Volume of PCC laid to be measured for payment.

Providing material and labour for laying machine mixed/machine batched/RMC controlled cement concrete M.250 using graded black trap stone aggregates of maximum 20mm nominal (down graded) size including fine aggregate confirming to IS 383 with minimum cement content as per IS456 (without flyash) for durability shall be followed as per approved design mix & latest IS456 for reinforced cement conrete work for all elements,all floors,all heights/depths, any lead and lift including cost of formwork with sheathing steel , scaffolding, staging, vibrating, compacting, finishing and curing complete but excluding cost of reinforcement for reinforced concrete work in Foundations, footings, Base of columns and Mass concrete, as directions of Engineer in charge Complete.Preliminary cubes to be prepared on award of work and to be tested to meet the specified requirement for M25 mix, design mix to be approved by the Engineer-in-charge/Architect. Concrete placing shall be done with utmost care, the free drop height shall not exceed 1.5m, and concrete shall be vibrated with immersion type vibrators having frequency not less than 7000 vibrations per second in methodical method so as all points of structures are covered. Free concrete surface shall be covered with Hessian cloth and kept wet.

Providing material and labour for laying machine mixed/machine batched/RMC controlled cement concrete M.250 using graded black trap stone aggregates of maximum 20mm nominal (down graded) size including fine aggregate confirming to IS 383 with minimum cement content as per IS456 (without flyash) for durability shall be followed as per approved design mix & latest IS456 for reinforced cement conrete work for all elements,all floors,all heights/depths, any lead and lift including cost of formwork with sheathing steel or form finish ply shuttering , scaffolding, staging, vibrating, compacting, finishing and curing complete but excluding cost of reinforcement for reinforced concrete work in Columns, Pillars posts and struts etc complete as directed by Engineer-incharge. Preliminary cubes to be prepared on award of work and to be tested to meet the specified requirement for M25 mix, design mix to be approved by the Engineer-in-charge/Architect. Concrete placing shall be done with utmost care, the free drop height shall not exceed 1.5m, and concrete shall be vibrated with immersion type vibrators having frequency not less than 7000 vibrations per second in methodical method so as all points of structures are covered. Free concrete surface shall be covered with Hessian cloth and kept wet.

Providing material and labour for laying machine mixed/machine batched/RMC controlled cement concrete M.200 using graded black trap stone aggregates of maximum 20mm nominal (down graded) size including fine aggregate confirming to IS 383 with minimum cement content as per IS456 (without flyash) for durability shall be followed as per approved design mix & latest IS456 for reinforced cement conrete work for all elements,all floors,all heights/depths, any lead and lift including cost of formwork with sheathing steel or form finish ply shuttering, scaffolding, staging, vibrating, compacting, finishing and curing complete but excluding cost of reinforcement for reinforced concrete work in Slabs, landing, shelves and Cantilever etc complete as directed by engineer-incharge.Preliminary cubes to be prepared on award of work and to be tested to meet the specified requirement for M20 mix, design mix to be approved by the Engineer-in-charge/Architect. Concrete placing shall be done with utmost care, the free drop height shall not exceed 1.5m, and concrete shall be vibrated with immersion type vibrators having frequency not less than 7000 vibrations per second in methodical method so as all points of structures are covered. Free concrete surface shall be covered with Hessian cloth and kept wet.

Providing material and labour for laying machine mixed/machine batched/RMC controlled cement concrete M.250 using graded black trap stone aggregates of maximum 20mm nominal (down graded) size including fine aggregate confirming to IS 383 with minimum cement content as per IS456 (without flyash) for durability shall be followed as per approved design mix & latest IS456 for reinforced cement conrete work for all elements,all floors,all heights/depths, any lead and lift including cost of formwork with sheathing steel , scaffolding, staging, vibrating, compacting, finishing and curing complete but excluding cost of reinforcement for reinforced concrete work in WALLS from top foundation level to all levels etc complete as directed by Engineer-incharge.Preliminary cubes to be prepared on award of work and to be tested to meet the specified requirement for M25 mix, design mix to be approved by the Engineer-in-charge/Architect. Concrete placing shall be done with utmost care, the free drop height shall not exceed 1.5m, and concrete shall be vibrated with immersion type vibrators having frequency not less than 7000 vibrations per second in methodical method so as all points of structures are covered. Free concrete surface shall be covered with Hessian cloth and kept wet.

Providing, laying and fixing in position REINFORCEMENT High yield deformed bars/TMT/CRS FE500/FE500D/FE550 for R.C.C. works at all levels including cutting, bending and binding with 16 gauge M.S. annealed wire, providing cover blocks of C.M. 1:2 Embedded with binding wire etc.applying expoxy based chemical coating steel. complete. The reinforcement detailing to IS 456 or, if specified by engineer, shall conform to IS: 13920 (Ductile detailing of R. C. Structures), bars as per IS 1786 the rate shall be inclusive of executing such detailing. Laps to be measured shall be as shown in drawing and for reinforcement length longer than available in market. Chairs, pins and laps other than that specified shall not on be measured and paid for. No extra to be paid for height, rate remains same at all levels, complete as per drawings, specification, direction of engineer-incharge. Make: TATA, SAIL, JSW, or EQUIVALENT.