Construction of Gabion Structure and RCC Retaining Wall cum Drain 2 Mtrs Height to protect Police Quarters and approach road at Madhupur under CD, APWD, Diglipur

Amount

Providing & constructing Gabion structure for erosion control, river training works and protection works with polymer wire crates of sizes each divided into 1.00 mtr compartments by cross netting with mesh opening size 150mm x 150mm made from 9 mm polymer rope (PP) having weight of 40 grm/m with a tolerance of + or -8%, 1560 kg breaking strength (min) and after 1000 cycles of abration the rope shall be subjected to tensile test as per IS:7071 (Part-IV) 1986, which shall be more than 85% of the original breaking strength of the rope the crates shall be filled with boulders with least dimension of 200mm, all loose ends to be securely tied with 9mm polymer wire as per the specification of standard of gabions and as per the direction of the Engineer-in-charge.

Polymer wire crates of mesh size 150mm x 150mm woven with 9mm dia Polymer wire crate size of 3.00mm x 1.00mm x 1.00mm

Polymer wire crates of mesh size 150mm x 150mm woven with 9mm dia Polymer wire crate size of 2.00mm x 1.00mm x 1.00mm

Polymer wire crates of mesh size 150mm x 150mm woven with 9mm dia Polymer wire crate size of 1.00mm x 1.00mm x 1.00mm

Carriage & filling of quarry rubbish/earth transported by mechanical transport to work site for an average lead of 5km including loading and unloading etc. all complete as per the direction of Engineer-in-charge.

Providing and laying pitching on slopes laid over prepared surface including boulder apron laid in cement mortar 1:6 (1 cement : 6 coarse sand) as per the direction of Engineer-in-charge.

Stone/boulder

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.

All kinds of soil.

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift upto 1.5 m.

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

1:2:4 (1 cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

1:4:8 (1 Cement : 4 coarse sand (zone-III) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources)

Centering and shuttering including strutting, propping etc. and removal of form work for :

Foundations, footings, bases for columns

Retaining walls, return walls, walls (any thickness) including attached pilasters, buttresses, plinth and string courses fillets, kerbs and steps etc.

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 de rived from natural sources)

Reinforced cement concrete work in walls (any thickness), including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc. above plinth level up to floor five level, excluding cost of centering, shuttering, finishing and reinforcement :

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

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-500D or more.

Cement concrete flooring 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate) finished with a floating coat of neat cement, including cement slurry, but excluding the cost of nosing of steps etc. complete.

40 mm thick with 20 mm nominal size stone aggregate

12 mm cement plaster of mix :

1:4 (1 cement: 4 fine sand)

Providing weep holes in Brick masory/Plain/Reinforced concrete abutment, wing wall/return wall with PVC pipe, extending through the full width of the structure with slope of IV:20H towards draining force complete as per drawing and technical specification.

65mm dia PVC pipe