There are several different types of steel members used in structures, including beams, columns, trusses, and plates. Beams are horizontal members that support loads by resisting bending, while columns are vertical members that provide structural support and stability. Trusses are composed of interconnected members that form triangular shapes and are used to support roofs, bridges, and other structures. Plates are flat steel members used for various purposes, such as floor and wall panels, as well as in the construction of tanks and vessels. These different types of steel members play crucial roles in providing strength and stability to structures.