procurement of flood fighting materials (geo-textile tubes and geo-textile sheets) for water resources department for the year 2024-25. , supply of geo textile tube (mega container) with the minimum properties as mentioned below:- polymer: pp of 400 gsm or above tube circumference : 10 m + 5% fill port (diameter): 30 to 45 cm tensile strenght (md):= 100 kn/m tensile strenght (cd): 100 kn/m elongation- md : = 25% aos: = 0.180 mm permittivity : = 0.40 s-1 lenght: 25 m , supply of woven geo-textile tube (mega containers) of filled height 0.9m made of geo-textile with minimum properties as mentioned below : i) tensile strength of geo-textile materials >65kn/m in both directions ii) o95 (pore size) of the geo-textile materials < 180 microns, iii) seam strength > 70% of the materials tensile strength, iv) elongation of the material at the ultimate tensile strength should not be 65% v) cbr brust strength > 10.5 vi) abrasion resistance (baw rotating drum) > 75% of strength retained vii) uv resistance (astmd 4355-500 hrs) > 80% of strength retained. (a) 10m length , supply of non-woven geo-textile fabric sheets of 300 gsm manufactured from 100% virgin polypropylene (pp) fibre with minimum properties as per is 16653: 2017 (i) wide tensile strength (md) =15kn/m & wide tensile strength (cd) =15kn/m (ii) elongation (md) =50% & elongation (cd) =50% (iii) abrasion =95% (iv) trapezoidal tear strength (md) =340 n & trapezoidal tear strength (cd) =340 n (v) cbr puncture strength =3000 n (vi) permittivity =1.25 s-1 (vii)permeability =60l/m2/sec (viii)aos =75micron (ix)uv resistance @500 hours retained tensile strength (md) & (cd) =80% (x) mass = 300gm/m² (xi)thickness at 2kpa =3mm. (each roll of geo fabric sheet should be supplied in properly packed bundles and should be marked with the sl. no. description unit basic rate name of manufacturer, batch number & its dimensions clearly on each roll 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).