Restoration of flood damages by providing cold weather bamboo bridge at ch.350.00m , bamboo foot bridge at ch. 200.00m, E/W, boulder apron on Bolahi PWD to Balipukhuri road under SDRF for the year 2021-22

Amount

Construction of cold weather Bamboo bridge overall width of 3.70m and clear road way 3m with jungle wood post 20cm to 25cm dia 5nos. In each rows and rows being 2.1m. apart except for the navigable span which should be 3m. Post to be driven at least 180cm. or more below ground level including providing 20cm to 25cm center to center and placed over 20 cm dia, jungle wood dham, 15cm dia. jungle wood bracing collar fixed by bolts and nuts, straps etc. mature bholuka Bamboo cross groth all closely packed and tied 75cm wide track way made from 38mm thick 1st class local plank fixed on 75mmx100mm first class local wood battens 120cm apart and 3 lines of jati bamboo horizantal railing fixed in bholuka bamboo post placed at 210cm apart and white washed including all necessary nuts and bolts, coir ropes, struts, nails etc. complete with a layer of brushwood to exposed portion out-side trackway with earth topping complete as per direction of the department.

Making 120cm wide bamboo foot bridge with 100mm Bholuka or Barua bamboo posts driven 120 cm to 180 cm underground 3 Nos. in each row and rows being 3m apart bholuka or Barua bamboo dham placed over the posts and tied with cane or wire , Bholuka or barua bamboo struts in each row both up and down stream, jati bamboo long gorhs closely packed and tied with dham. Single layer of mat placed over 75mm thick brush wood and tied with bholuka or Barua bamboo rail stand fixed in one side of the bridge etc. complete. at Ch.250.00m

Close bamboo toe walling with 65mm to 75mm diameter bamboos of length ranging from 1.2m to 3.0m driven at least 150mm c/c and provided with three horizontal split bamboo runner fixed with nails complete including coal tarring as directed (Rate inclusive of cost of the required quantity of tar)

Laying of cement bag filiing with earth in the damaged by flood water portion of road embankment.

Construction of embankment with approved material obtained from borrow pits with a lift upto 1.5 m, transporting to site, spreading, grading to required slope and compacting to meet requirement of Tables 300.1 and 300.2 with a lead upto 1000 m as per Technical Specification Clause 301.5 (I) Private land

Providing and laying of boulder apron laid in wire crates made with 4mm dia GI wire conforming to IS: 280 & IS:4826 in 100mm x 100mm mesh (weaved diagonally) including 10% extra for laps and joints laid with stone boulders weighing not less than 40 kg each.as per Clause No. 2503 of MORTH Specification of Roads and Bridge Works.

Providing and laying pitching on slopes laid over prepared filter media including boulder apron laid dry in front of toe of embankment, complete as per drawing and Technical Specifications of Clause 2504 of MORTH Specification of Roads and Bridge Works. A) Stone / Boulder

Providing and laying filter materials underneath pitching in slopes complete as per drawing and Technical Specifications as per Clause No. 2504 of MORTH Specification of Roads and Bridge Works.

MADHAB SAIKIA

Biswajit Boruah