Construction of Erosion Protection with Boulder Pitching at Bathou Ashram High School, Dhamdama under SOPD-G during 2024- 25

Amount

EROSION PROTECTION WITH BOULDER PITCHING

Clearing and grubbing surface drain including rank vegetation, grass, bushes, Shurb, Sapling etc.and dispose of unserviceable materials outside the periphery of the area. By manual means (In area of light jungle)

Earth work in excavation of foundation of structures as per draw-ing and technical specification, (i) Ordinary soil

Providing and laying of boulder apron laid in wire crates with 4 mm dia GI wire conforming to IS:280 and IS:4826 in 100 mm x 100 mm mesh (woven diagonally) including 10 per cent extra for laps and joints laid with stone boulders weighing not less than 25 kg each as per drawing and technical specifications Clause 1301

Supply, Stitching and Laying of Non wooven Geo textile Fabric sheet of 400 gsm

Supplying, filling and laying in loose with Geo-textile bags of Type-A (1.30m x 0.70m) made of Geo textile non woven fabric sheets of 400 GSM manufactured from polyster/ polypropylene conforming to relevant ISO standard filled with specified sand/ silt from flood plain or adjacent char within a distance of 90 m of the work site including excavation, filling Geo bags with sand weighing 126.00 kg after filling, stitching the mouth of the filled bags with polypropylene or polyster complete as per technical specifications and as directed. b) Without Boat.

PLANTATION: Fabricating, supply & fixing of MS circular tree guard of 75 cm. dia. and 120 cm. height (above GL), MS tree guard made with 3 no. 25 x 25 x 5 mm MS angle iron 150 cm. long fixed vertically and 3 nos. 20 x 5 mm MS flat fixed circumferentially around MS angle, with support of MS angle and flat 13 gauge MS wire mesh welded in square grid pattern with an opening of 2” x 2”.

Planting of Trees and their Maintenance for three Year (Planting of trees by the road side (Avenue trees) in 0.60 m dia holes, 1 m deep dug in the ground, mixing the soil with decayed farm yard/sludge mannure, planting the saplings, backfilling the trenches, watering , fixing the tree guatrd and maintaining the plants for three year.

Embankment Construction with Material Obtained from Borrow Pits (Construction ofembankment with approved material obtained from borrow pits with all lifts and leads, transporting to site, spreading, grading to required slope and compacting to meet requirment of table 300-2 (Including cost of testing of materials at site and laboratory as directed by the deptt.)

Cost of RCC sign board including painting , writing & fitting fixing at project sit, complete.

Md. Chan Ali (BID ID -258163)

soneswar rabha (BID ID -258182)