https://groups.yahoo.com/neo/groups/TheCivilEngineer/conversations/topics/7182Hi,These are the steel figures that I have found to be useful forestimating over the years:1.Footing 1.15 kg/cft (40 kg/cum)2.Plinth beam 4.50 kg/cft (160 kg/cum)3.Columns (light load)5.0 kg/cft (175 kg/cum)4.Columns (heavy load)8.5 kg/cft (300 kg/cum)5.Slab 0.75 kg/sft (8 kg/sqm)6.Appartment upto 10 floors 2.75 kg/sft (30 kg/sqm)7.Factory (5k to 20k sft)Steel truss 2.0 kg/sft (22 kg/sqm)8. Factory (for r.c.c. members) 1.1 kg /sft (12 kg / sqm)9. Load bearing house Cement reqm't 25 kg/sft (270kg/sqm)10.House (framed strct) Cement reqm't 18 kg/sft(195 kg/sqm)11.Appartment upto 10 floors Cement 15 kg/sft (160 kg/sqm)> > I've read before in a website, that it takes 125> > kg's steel > > reinforcement for 1 m3 concrete in a ordinary 10http://theconstructor.org/practical-guide/rate-analysis-for-reinforced-concrete/6954/For slabs = 1.0 % of concrete volume.For Beam = 2 % concrete volume.For column = 2.5 % of concrete volume.For RCC Roads, 0.6% concrete volume.