Procurement of flood fighting materials (Mega Bag) for Water Resources Department for the year 2025-26 (Zone-C).

Supply of Geo Mega Bags (Size 2.00 m × 1.50 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 PP woven with UV resistant slit film tape fibre with MAVR values of the following properties. Geotextile 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/ASTM D5261) ≥ 210 Gms/Sqm,  Tensile strength (MD) (ASTM D4595) ≥ 29 kN/m.  Tensile strength (CD) (ASTM D4595) ≥ 29 kN/m.  Tensile Elongation (ASTM D4595) ≥ 5% & ≤ 25%.  Grab Elongation (ASTM D4632) ≥ 5% & ≤ 25%.  Tensile strength (ASTM D4632) = 1.5 kN.  UV resistance (ASTM D4355) = 80%/500 hrs Non-woven Geo-textile for the inner layer. It is needle punched non-woven geo-textile made of 100% polyester staple fibres which are formed into a random network for dimensional stability. It should resist UV degradation, rotting and alkalis Weight (ISO-9864/ASTM D5261) ≥ 150 Gms/Sqm,  Tensile strength (MD) (ASTM D4595) ≥ 5kN/m.  Tensile strength (CD) (ASTM D4595) ≥ 5 kN/m.  Tensile Elongation (ASTM D4595) ≥ 5% & ≤ 25%.  Grab Elongation (ASTM D4632) ≥ 5% & ≤ 25%.  Tensile strength (ASTM D4632) = 1.5 kN.  UV resistance (ASTM D4355) = 35%/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). FOR GUWAHATI (To be supplied only as emergency flood fighting material during flood season)