bids are invited for chain link fence excavating in trenches, nexc. 0.70m wide and nexc 0.70m in depth , cement concrete in foundation filling , material and labour for joist, channel, angle, iron or tee sections, fixed independently, without connecting plates, etc. , material and labour for rolled sections as in main and cross beams hip and jack rafters purlins , fixing of 4mm dia galvanised steel wire. , supply and fixing for iron wire g.i unit 4mm dia galvanised steel wire. , material and labour for galvanised. 2 strand steel barbed wire , supply and fixing for g i coting concertina coil dia 450 mm thikness 2mm , material and labour for painting two coats of synthetic enamel painting or primer steel surface including preparation of surface all as specified. total quantity : 15484