As their name implies, prefabricated buildings are structures built by manufacturers and then installed in the selected location. The extent of the manufacturers prefabrication can vary from structure to structure, but generally the majority of the building is constructed offsite. In most cases, this drastically reduces construction time and cost, and allows construction to take place regardless of environmental conditions.Prefabricated buildings can be designed for virtually any use, but are ideally suited to operations requiring temporary structures, short construction time, and/or relatively inexpensive construction costs. They are also an excellent solution in locations where conditions prohibit or otherwise impair onsite construction. For example, a prefabricated building might be used as an office at a mining site or as a guard post to a temporary military base. Modular and prefabricated structures also serve as meeting facilities, arenas, convention locations and event centers. In an agricultural capacity, they may serve as a storage location, a staging area or housing.Designs of prefabricated buildings vary, as do the materials used in their construction. Large, tent-like facilities provide a quick and economical solution to storage concerns or event planning; these structures can be designed, built and installed within a very short span of time, and can be fit to existing buildings or locations. More traditional structures are also available, and can be built to customer specifications for professional or private use. Prefabricated offices, schools, churches and homes have all been built in locations throughout the world.Modular homes, as prefabricated homes are otherwise known, are generally transported to their ultimate location via heavy-duty flat bed trucks. In the case of large buildings, such as two- and three-story units, the job may require multiple vehicles. Once onsite, however, the buildings can be assembled in mere days (or less, depending on the complexity of the structure), unlike typical construction, which can take months. Construction materials include wood, concrete, metal and a variety of other materials typically used in building and factory engineering.