Joists are horizontal members used to span open spaces in ceilings, floors, and roofs. They typically connect to vertical members and transfer loads to beams. In flooring, joists can also provide additional stiffness to subfloor sheathing. Typically, joists are installed in a parallel arrangement across bearing walls and girders and are supported by them.

Light steel joists are a superior alternative to timber joists as they are immune to problems like rot, sagging, warping, and termite or fungal attacks. These joists possess the durability to support heavy loads over extended periods of time and perform exceptionally well in regions with harsh climates.