3 ms·

How much variation is there in rebar diameter? I thought it was pretty standardized. If so length to length comparison would make sense. Though I am curious abo

• jaclaz 3y ago
  Lots of variation. Typically used diameters in buildings (Italy, Europe) are from 10 to 24 mm, but 6 and 8 smaller diameters (mostly used in electrowelded nets or in smaller pre-cast manufacts) and larger diameters 26 28 30 32 mm (only used in large structures like bridges) do exist. https://www.oppo.it/tabelle/tondi_sezionexnumero.htm https://www.oppo.it/tabelle/tondi_sezionexnumero.htm So, a range from 0.2 to 6.3. kg per meter. Cost is (aproximation) between 1.5 and 2 €/kg, it depends on a number of factors and is a fluctuating one, though it is usually the same in a same country, without much difference on the specific area. Typically a foundation will have between 60 and 90 kg of steel per cubic meter, pillars and walls between 80 and 120, and slabs/beams between 100 and 150. Cost of concrete is even more varied and it is heavily (even in the same country) affected by the cost of the local aggregates (sand, gravel, etc.) so it is hard to make a ratio valid everywhere, but surely it is much higher than what you hypothized. If we assume that price of concrete (not reinforced) is 100-120 €/m3, this ratio to rebar cost is at least 1:1, but could go up to as much as 1:3.