Hollow circular second moment of area

Calculates second moment of area for a solid circular section.

Transfers a centroidal second moment of area to a parallel axis.

Calculates Ix and Iy for a rectangular section.

Calculates angle-section properties as two rectangles with the overlapped corner subtracted.

Calculates channel-section properties from a rectangular web and two flanges.

Calculates area, second moments, section moduli, and mass per length for a pipe or CHS from outer diameter and wall thickness.