Immediate measures for restoration of village No. 2 Dewanpara from flood damages of river Jangkra under S.D.R.F for 2021-22.

Amount

Supply of Geo-textile bags of type-A (1.03X0.70M) made of Geo-textile non-woven fabric sheets of 400 GSM Supply of Geo-textile bags of type-A (1.03X0.70M) made of Geo-textile non-woven fabric sheets of 400 GSM manufactured from 100% virgin Polypropylene (PP) fibre having thickness not less than 3.00 mm with minimum properties as (i) Tensile strength (CD) ≥ 24 KN/m (ii) Tensile strength (MD) ≥ 22 KN/m (ii) Mass ≥ 400.00 Gm/m ² (iii) CBR Puncture strength ≥ 4100 N/m2 (iv) Elongation @ break (Warp) ≥ 54% (v) Elongation @ break (Weft)≥ 52% (vi) Abrasion ≥ 70 % (vii) UV Resistance @ 500 hours ≥ 70% (viii) AOS ≤ 75 micron (ix) Permittivity ≥ 1.25, (x) Trapezoidal Tear Strength ≤ 520 N (xi) Permeability = 45Lt/m2/sec (xii) Seam strength = 80 % of geotextiles 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. (Bags are to be supplied of 100 numbers or part in a bundle, properly packed with name of Manufacturer and Batch Number is to be marked on each bag with “WRD Govt of ASSAM” to be printed on each bag and mentioning properly the GSM and type of Geo bag polymer. Test Certificate from approved NABL accredited and ISO Certified Laboratory should invariably be submitted against each batch of material).

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 geotextiles 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)

Supply of galvanised wire netting sheets made of 8G wire of 152 mm (6”) square mesh in each sheet of overall size 2.57 x 1.66 m including 76 mm projection of each wire on all sides beyond the net size of 2.42 m x 1.31 m having knots of 12G at every joint including loading/ unloading and stacking properly completed as directed by the department (weight of each sheet should not be less than 6.30 Kg)

Collection and supply of earth by head load free from roots & vegetation and stacking in regular measurable stacks at suitable places including clearing and levelling the stacking seats, breaking clods up to 2.5 cm cube. Payment of forest royalty if any etc. complete as directed. For initial lead of 30m and lift of 1.5m.

Spreading of earth stacks over the crest and slope of embankment and places as directed in uniform layer of 22 cm. thick including breaking clods, dressing, ramming etc. complete where necessary including dressing the embankment. before complete as directed

Supply of Sewing Thread/Yarn PPMF Stitching Thread (2000 Den. Kaplon) i/c payment of taxes.

Filling and laying in cage with silt filled Geo bags of size 1.03m X 0.70m including excavation of specified silt from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with silt having minimum weighing 126.00 Kg and minimum volume 0.084 cum after filling ,double locking chain stitching the mouth of the filled bags with polypropylene thread by power driven double needle machine, stacking the same in batches of 100, carrying the same to the dumping site including all handling charges and local carriage within a distance of 150m and laying properly. in cages made of wire netting sheets of size 2.57x1.66m of 8G galvanized wire making the cage from 2 nos. of wire netting sheet by tying the projected wires complete as directed. (Geo Bag , Wire Netting Sheets and Polypropylene thread will be supplied by the department free of cost) Without Boat

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

Labour charge for laying Geo fabric sheet as filter bellow pitching including anchoring and complete as directed

Providing and laying of 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, carriage of the slab from the place of casting to the work site up to a distance of 200m and all handling charges etc. complete as directed.

KATIRAM NARZARY

RWISUMWI GOYARY