Pre-Engineered/Bolt-Up These types of metal buildings can be erected for lower than conventional building costs and offer the convenience of long "free span" capabilities for space flexibility and no interior load bearing walls. Factory pre-fabricated building systems are designed, engineered and shipped directly to the jobsite for such applications: Agricultural Commercial Industrial Educational Religious Welded Buildings On smaller buildings, a weld-up building can be built on site more quickly and more economically than a pre-engineered metal building. Examples include the following types of structures: Barns Workshops Cabins Custom Roof Units Design Assistance We provide site development ideas and suggestions as well as general layout and design assistance for a variety of residential and commercial projects.