provision of operational stores works , gabion portable collapsible wall basket , galvanised welded mesh frame ( 2 cells per set ) of size 1 . 22 x0 . 61x0 . 75 m ( length 4 feet , width 2 feet and height 2 . 5 feet ) . basket mesh will be made of 4 mm dia hot dip galvanised low carbon steel wire confirming to bs 1052 . 145 gms alu-zinc coated prime , quality raw material conforming to bs / en 10244-2 . wire tensile 540-770 n / mm2 . 100% defect free . basket frame mesh size is 76 . 5mm x 76 . 5mm . mesh tensile 70% of wire tensile . mesh frame edge will be spiral hinged through 20mm dia spiral made of 4 mm dia galvanised stretchable wire for joing to ensure easy folding and unfolding and 2 in length after folding . tolarance panel 10 . 10 kg / set . 8 nos high tensile stiffing will be provided with each cage . the cage box have inner linning of non woven geotextile khaki colour . the geotextile will be 3 mm thick 300 gms in heavy duty non woven polypropylene . make - hesco / star / a1 fence and equivalant , steel roofing trough ( srt ) . steel roofing trough ( srt ) isi marked 8 long made out of 2mm thick . @ 37 kgs each with tolerance -2 to +5% , hot rolled carbon steel sheet conforming to is specification with 16 nos 12mm dia long bolt , machine made ( heavy duty ) complete threaded with one nut and two washers of 30mm outer diameter and 3mm thick , per bolt , per srt . the overall width of srt shall be 613mm and height shall be 180mm . the srt shall be applied with one shop coat of red oxide primer the shape of srt shall be regular and angle of bending shall be maintaned properly . the srt not found properly in shape shall be rejected . make : sail / tata / jindal , steel roofing trough ( srt ) . steel roofing trough ( srt ) isi marked 10 long made out of 2mm thick . @ 47 . 89 / kg each with tolerance -5 to +5% , hot rolled carbon steel sheet conforming to is specification with 16 nos 12mm dia long bolt , machine made ( heavy duty ) complete threaded with one nut and two washers of 30mm outer diameter and 3mm thick , per bolt , per srt . the overall width of srt shall be 613mm and height shall be 180mm . the srt shall be applied with one shop coat of red oxide primer the shape of srt shall be regular and angle of bending shall be maintaned properly . the srt not found properly in shape shall be rejected . make : sail / tata / jindal , indian standard medium beam ( ismb ) 200mm x 100mm x 12 feet long isi marked . make:- sail / tata . is specification 808-1989 . the weight of ismb should not less than 25 . 40 kg / rm ,