The cross-sectional area () represents the area enclosed by the shape of the structural member, typically perpendicular to the axis of bending or rotation. The SI units for the radius of gyration formula are meters (m) for length measurements (both and any dimensions involved in calculating and ). It’s essential to ensure that all units are consistent when using this formula to calculate the radius of gyration.
where:
is in meters to the fourth power (m⁴)
is in square meters (m²)