Anti Erosion measures to protect Oubari (North) Village from the erosion of Deosunga river.59-4

Amount

Earth work in bank trimming to the designed section/ slope by manual means including removing the trimmed soils to a minimum distance of 30 m complete as directed.

Supply of Geo-textile bags of type-A (1.03M x 0.70M) made of Geo- textile non-woven fabric sheets of 400 GSM manufactured from 100% virgin Polypropylene (PP) fibre with minimum properties as (1) Tensile strength ≥ 12.4 KN/m dj kg-34r45yp (ii) Mass ≥ 400.00 Gm/m² (iii) CBR Puncture strength > 1550N?m 2 (iv) Elongation @ break (Warp) ≥ 54% (v) Elongation @ break (Weft)≥ 52% (vi) Abrasion - 70% (vii) UV Resistance @ 500 hours ≥ 70% (vii) AOS ≤ &% MICRON (ix) Permittivity ≥ 1.25, (x) Trapezoidal Tear Strength < 340 N (xi) Permeability 2.00 x 10 m/sec (xii) Seam Strength = 80% of geo textiles strength. Stitching of Bags should be Ring Spun Yam stitches with 2500-3000 denier double line chain stitch with overlap with stitches along the edge @ minimum 15 stitches per 100mm. (Bags are to be supplied of 100 numbers of 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 bag of material).

Supply of Galvd. W. N. Sheet made of 8G wire of 152 sq. mesh (6") in sheets of overall size 2.57 x 1.66m with longitudinal wire at 152mm center and 76mm projection of each wire on all sides beyond the net size of 2.42 x 1.50m having knots of 12 SWG at every joints, (Weight of each sheet should not be less than 6.30Kg)

Filling and laying cage with sand/ silt filled Geo Begs of size 1.03 x 0.70 M including excavation of specified silt from flood plain or adjacent char with in a distance of 90 M from the work site and filling with sand, weighing 126 KG after filling. 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 any local carriage within a distance of 150 M and laying properly in cages made of wire 2.57x1.66m of 8G galved wire making the cage from 2nos of wire netting sheets by tying the projected wire complete as directed (Geo bags. wire netting sheet and Polypropylene thread will be supplied by the Deptt. free of cost). Without boat

Filling and laying Geo Begs of size 1.03 x 0.70 M Excavation of specified sand/silt from flood plain or adjacent char with in a distance of 90 M from the work site and filling with sand, weighing 126 KG after filling. 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 any local carriage within a distance of 150 M and laying properly as directed (Geo bags and Polypropylene thread will be supplied by the Deptt. free of cost

Supply of special threads for Geo bags to meet 4 rows of type 101 stitch on the top/open end of bag after filling the materials and specification etc. complete as directed. (Inclusive of 1% labour cess)

DHARAMSING NARZARY (BID ID -259915)