Immediate measures for restoration of damage at village Nasribil on LB of river Janali under SDRF for 2020-21

Amount

Light Jungles: Clearing light jungles and trees upto 15 cm. girth including cutting, uprooting roots and stumps, removing them from the site of the work, etc. complete as directed. ( When 30% of the area is covered by shrubs,trees etc)

Collection and supply of approved quality river boulder of size 23cm to 30cm in average and minimum Weight 30 Kg having (i) specific gravity not less than 2.65 and Materials properties conforming to IS 2386 part III & IV 1963 free from dust, dirt and other foreign materials including necessary carriage and stacking in regular measurable stacks at site, payment of forest royalty, monopoly, etc. (10% under sized boulder is allowable for packing/filling the gaps occurred during execution of works) Complete as directed.(15% deduction will be made from the stack measured quantities on account of void). over size allowable in quantity). ( FromSonkosh quarry.)

Supply of galvd. Wire netting sheets made of 8G wire of 152mm(6”) square mesh in sheet of overall size 2.57x1.66m (8’-6”)x(5’-6”) including 76mm projection of each wire on all size beyond the net size of 2.42mX1.50m(8’-5’) including, loading, unloading and stacking properly etc. Complete directed.(Tax extra)

Earthwork in bank trimming to the designed section /slope including removing the soils at a safe distance, complete as directed.

Labour charge for dumping boulder in cage made of wire netting sheets of size 2.57m × 1.66m of 8G. galved. Wire making the cage from 2 nos. of wire netting sheets (wire netting sheets to be supplied by the Deptt. Free of cost within 150m of the work site) filling boulders inside the cage, launching the same in position as directed including all handling charges and including site carriage of boulder from stack yard/ dump site within a distance of 150m etc. complete as directed. (Without both)

Supply of non-woven Geo-textile fabric sheets of 300 GSM manufactured from 100% virgin Polypropylene (PP) fibre with minimum properties as (i) Tensile strength ≥ 12 KN/m (ii) Mass ≥ 300.00 Gm/m ² (iii) CBR Puncture strength ≥ 3.5 KN (iv) Elongation at break ≥ 60% (v) Abrasion ≥ 70 % (vi) UV Resistance @ 500 hours ≥ 70% (vii) AOS ≤ 75 micron (ix) Permittivity ≥ 1.25, (x) Trapezoidal Tear Strength ≤ 340 N (xi) Permeability = 2.00 x 10 ̄ ³ m/sec (xii) Seam strength = 80 % of geo-textiles strength . Stitching of Bags should be Ring Spun Yarn stitches with 2500-3000 denier double line chain stitch with overlap with stitches along the edge @ minimum 15 stitches per 100 mm. (Each Roll of Geo Fabric Sheet should be supplied in properly packed Bundles and should be marked with the Name of Manufacturer & Batch Number clearly on each bundle with “WRD Govt of ASSAM” to be printed on it and mentioning properly the GSM and type of polymer and Test Certificate from approved NABL accredited and ISO Certified Laboratory should invariably be submitted against each batch of material) FOR GUWAHATI

Labour charge for laying Geo fabric sheet as filter bellow pitching.

Providing cast in situ plain cement concrete slab of size 0.50m X 0.50mX 0.15m, made in proportion 1:2:4 having 4 Nos. of bottom corner keys of 10 cm. dia. and 10 cm. long on trimmed graded slope of river bank including ramming the seat, curing etc. complete as directed.