Post-frame constructions are engineered wood-frame building systems. They feature large, solid-sawn posts or laminated columns instead of wood studs, steel framing or concrete masonry. However, studs, steel and masonry may be incorporated into post-frame structures to make unique "hybrid" buildings. Post-frame buildings are often thought of as "pole barns." However, today they are a highly engineered version of pole barns that meet UBC and IBC code. Post-frame structures are more quickly erected than other kinds of buildings. Because the larger posts and the interlocking frame can handle greater loads than stud-wall construction, fewer structural materials are needed - which saves on material and installation costs. Also, because posts are spaced farther apart than studs, there are fewer interruptions in insulating materials. Post-frame buildings feature an exceptionally large wall cavity for ample insulation, which allows for lowered heating and cooling costs throughout the year. Post-frame buildings transfer loads to the ground through the posts, which are typically embedded in the ground or surface-mounted to a concrete pier or masonry foundation. There are a variety of foundation options unique to post frame, such as plastic barrier systems for enhanced protection of wood and concrete posts or piers. Due to the application of modern structural engineering principles and stress testing methods, post-frame technology is recognized as a significant advancement in the centuries-old art of wood-frame construction. Post frame is now the construction method of choice for any number of agricultural, commercial, industrial, residential, religious and public building needs. Due to the nature of its design and many external façade options, post frame may be customized to provide virtually any look. Post frame is an effective and versatile choice for building additions and remodeling projects. Entire buildings may be given a new look without sacrificing the original building. Almost any type of exterior façade may be installed on a post-frame building. Post-frame buildings may be designed to meet the highest standards for quality and aesthetic beauty. They are the most efficient and economical choice for most low-rise building applications.