Appendix C. Moments of Composite Areas

C.1 Centroid

This appendix is concerned with the geometric properties of cross sections of a member. These plane area characteristics have special significance in various relationships governing stress and deflection of beams, columns, and shafts. Geometric properties for most areas encountered in practice are listed in numerous reference works [Ref. C.1]. Table C.1 presents several typical cases.

Table C.1. Properties of Some Plane Areas


The first step in evaluating the characteristics of a plane area is to locate the centroid of the area. The centroid is the point in the plane about which the area is equally ...

Get Advanced Mechanics of Materials and Applied Elasticity, Fifth Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.