procurement of flood fighting materials (geo-textile bags type-a and geo-textile bags type-c ) for water resources department. (for dhubri wrd) (ph-iii ) , supply of geo-textile bags of type-a (1.03 × 0.70 m) inner to inner made of geo-textile non-woven fabric sheets of 400 gsm manufactured from 100% virgin polypropylene (pp) fibre with minimum properties as per is 16653:2017 i. wide tensile strength (md) = 20kn/m & wide tensile strength(cd) =20 kn/m ii. elongation (md) =50% & elongation (cd) = 50% iii. abrasion = 95% iv. trapezoidal tear strength (md) = 450n & trapezoidal tear strength (cd) = 450n v. cbr puncture strength = 4000n vi. permittivity = 1.10s – 1 vii. permeability = 40l/m2/sec viii. aos = 75 micron ix. uv resistance @ 500 hours retained tensile strength (md) & (cd) = 80% x. mass = 400 gm/m²xi. thickness at 2kpa = 3 mm xii. seam strength = 80 % of actual fabric 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 in a bundle, properly packed with each bag having proper tag with name of manufacturer, batch number, the gsm and type of polymer encrypted and stitched on top corner and each bag is to be marked with “wrd govt. of assam” to be printed distinctly. test certificate from approved nabl accredited and iso (certified laboratory should invariably be submitted against each batch of material) , supply of geo-textile bags, type c of size 1.50 m × 1.00 m, inner dimension made of composite layers of geo-textile as per specifications below: woven geo-textile for the outer cover. the woven geo textile is woven with uv resistant slit film tape fibre with mavr values of the following properties. geo-textile used to manufacture geo-textile bags should have high mechanical properties for enhanced durability along with enhanced puncture, abrasion and u.v. resistance characteristics. geo-textile should be inert to biological degradation and resistant to naturally encountered chemicals, alkalis, and acids. • weight (iso-9864/astmd 5261) = 250 gms/sqm. • tensile strength (md) (astmd 4595) =35 kn/m. • tensile strength (cd) (astmd 4595) = 35 kn/m. • tensile elongation (astmd 4595) = 5% & = 30%. • grab elongation (astmd 4632) = 5% & = 30%. • tensile strength (astmd 4632) = 1.5 kn. • uv resistance (astmd 4355) = 70%/500 hrs. non-woven geo-textile for the inner layer. it is needle punched non-woven geo-textile made of 100% polypropylene staple fibers which are formed into a random network for dimensional stability. it should resist uv degradation, rotting and alkalis. • weight (iso-9864/astmd 5261) = 300 gms/sqm. • tensile strength (md) (astmd 4595) = 12 kn/m • tensile strength (cd) (astmd 4595) = 12 kn/m • tensile elongation (astmd 4595) = 5% & = 30% • grab elongation (astmd 4632) = 5% & = 30% • tensile strength (astmd 4632) = 1.5 kn • uv resistance (astmd 4355) = 70%/500 hrs (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)