A member may be subjected to a bending moment, which acts on a plane inclined to the principal axis (say). This type of bending does not occur in a plane of symmetry of the cross section, it is called unsymmetrical bending. Since the problem related to flexure in general differs from symmetrical bending, it may be termed as skew bending.
The unit Unsymmetrical Cantilever Apparatus consists of a horizontal cantilever Rigidly clamped at its lower end to the main column which is attached to a rigid structure. Beams of different sections may be used. A loading head, located at the upper end of the column, can rotate freely around the vertical axis of the beam at 15º intervals. A vertical load may be applied to the free end of the beam by means of a cord attached to the beam and passing over a pulley mounted on the rotating head. The deflections of the beam are measured by means of two dial gauges mounted perpendicularly to each other on the head. Two steel beams are supplied, one with rectangular section and the other one with L shape section.