Steel structures may be used for a variety of reasons. Here are some examples of metal structures. Steel buildings are among the most durable and cost-effective constructions on the market today. Steel structures are available for almost any use you can think of. They are used for industrial, commercial, residential, and agricultural purposes. There are four main types of steel buildings: pre-engineered, semi-manufactured, fully manufactured, and modular. Pre-engineered buildings are made up of panels that are brought to the site as separate pieces and then assembled by steel workers on the job site. This type of building is very economical because it uses off-the-shelf components that require minimal customization. The down side to this type of structure is that it takes longer to build than the other types. Also, since each panel is fixed in place when installed, the order in which they are placed on the site will determine how much land must be cleared. For example, if a driveway is needed between two panels, it must be included in the layout or the house won't fit. Semi-manufactured buildings are similar to pre-engineered buildings but instead of being assembled as one piece at the site, they are built in sections at the factory and then transported to the construction location. These sections typically consist of four walls and a roof section that can be attached to another section.