radius of gyration = sqrt(Moment of inertia/cross section area) Regards, Sumit
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There is no single diameter - there are steel rods of different diameters for different uses.
1 metre = 100 cm125 mm = 12.5 cmVolume of a cylinder = (pi) x (radius)2 x (length)Radius = 1/2 of diameter = 6.25 cmVolume = (pi) x (6.25)2 x (100) = 12,271.85 cm3 = 12.272 litres (rounded)
If the bar is circular then it is: pi*radius square
Answer
for density of steel @ 7850 kg/m3 you can use No of bars (12 m long) per ton = (13500 / D2) where D= bar diameter in mm