Those elements that are interconnected in such a way so as to constitute a structure are called structural elements.
Beam: Beam is a flexure member of the structure. It is subjected to transverse loading such as vertical loads, and gravity loads. These loads create shear and bending within the beam.
A compressive member of a structure is called strut.
Beam-Column: A structural member subjected to compression as well as flexure is called beam column
Grid: A network of beam intersecting each other at right angles and subjected to vertical loads is called grid.
Cables and Arches: Cables are usually suspended at their ends and are allowed to sag. The forces are then pure tension and are directed along the axis of the cable. Arches are similar to cables except hath they are inverted. They carry compressive loads that are directed along the axis of the arch.