# How many steel bars in one ton of 12 mm dia of 12 m length?

Since you're using metric measures, I corrected the question to read "tonne" instead of "tone." What needs to be determined is, are you talking about theoretical steel bars, or actual rebar sizes? In actual sizes, there aren't any 12mm bars; the closest thing is 12.7mm. If that's what you mean (that's size 4 rebar), it's weight is 11.952 kilo for 12m. So your answer, for one tonne, is 83.67 of those 12m bars at 12.7mm thickness each.

### Rolling margin of steel rod which is used for construction?

Rolling Margin is the deviation of actual unit weight to that of Standard unit weight as per IS Standards. Rolling Margin is calculated as : Sectional weight = Weight of Steel Bars dia wise / length of the bars. As per IS Standards unit weight of the Bars is calculated as dia x dia / 162 Rolling Margin is deviation of actual sectional weight to that of IS Standard unit weight. Standard Rolling Margin for…

### What is rolling margin for reinforced steel and how it is calculated?

Rolling margin is percentage of diviation in Sectional weight of Reinforcement steel allowable as per IS codes.Reinforcement steel is extruded from a mould which is made for a particular size e.g 8mm Dia.When the mould is brand new,the sectional weight of 8mm steel extruded through mould would exact as per IS standard of lower than that.i.e. 0.395Kg per Metre or lessor.Mould gets little bigger after certain period of time or after certain quantity of production…

### What is the unit weight of TOR STEEL bar 28mm dia?

I have a method to unit weights of tor steel bars, 28mm Diameter- 4.835kg/m it does not matter size of bar, if bars diameter say X then square it, X2 then divide by 162.163, X2 162.163 Example , 28mm 282 162.163 (162.162162162- 162 recurring decimal)/162.162 bar =4.834641688kg/m approximate to 3 decimal =4.835kg/m try other examples,for 8mm, 10mm,12mm,16mm,20mm,24mm u will answer 8mm dia : 0.395 kg/m ,10mm dia : 0.617 kg/m ,12mm dia : 0.888 kg/m…

### How to convert and use 10mm dia steel instead of 12mm dia steel which is spaced at 200mm center to center?

No need to convert. the centre of both sizes will always be in the same position, irrespective of how wide the diameter is... up to 200mm diameter steel. I'm guessing that you are changing the re-bar specification for cast concrete... might I suggest that you clamp together 2 long bits of 2 x 2 or 3 x 2 along their lengths, and then drill a 10mm hole at 200mm centres along the join... then unclamp…