In stress analysis of a member such as torsion of
a shaft, bending of a beam,
compression of a column, etc., cross sectional properties are usually used to calculate stress and displacement distributions.

Sectional properties calculators
have been developed to calculate cross section area, second moment of area, section modulus, radius of gyration,
center of gravity of the cross section and mass of a beam or column for standard profile types
and geometric shapes. Profile types and geometric shapes which can be calculated with the
calculators are rectangular hollow and solid structural sections, round hollow
tubes and solid bars, I,
T, C beams (channels), wide flange I beams, standard I beams, American standard
steel channels, steel angles with equal legs and aluminum I beams and channels.

The formulas and parameters used in the calculators are given in
the "List of Equations" sections
of the calculators.