supply of store for strengthening of fwd posts job no 6115:-1 indian standard medium beam 150x75mm, minimum weight 15.75 kg per meter with tolerance -2% to +5% confirming to is- 808 ( part i ) - 1973 ( isi marked ) . the length of the ismb shall be 4 m. ismb shall be applied with one shop coat of red oxide primer. make: tata / sail 2 steel roofing trough isi marked 3000x613 mm long made out of 2.5 mm thick @ 54 kg each with tolerance -2% to + 5 %, hot rolled carbon steel sheet confirming to is specification with 16 nos 12mm dia 40 mm 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 maintained properly. the srt not found properly in shape shall be rejected. make: tata / sail 3 steel roofing trough isi marked 2400mm long made out of 2 mm thick @ 36 kg each with tolerance -2% to + 5 %, hot rolled carbon steel sheet confirming to is specification with 16 nos 12mm dia 40 mm 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 maintained properly. the srt not found properly in shape shall be rejected. make: tata / sail 4 hdpe sand bags barrel type double stitched at one end std quality double colour brown and size 840mm x 360mm nylon with suitable tying cord as per is 14252 / 1995. weight should not less than 85 gms as per sample approved by this regiment. 5 ldpe sheet conforming to is: 14611 / 1998, 150 gsm of . make : silpaulin / supreme.