This document discusses pre-engineered buildings (PEBs) and their construction. PEBs are designed using standardized engineering designs and stock building materials to meet a variety of design needs. The basic structure of a PEB consists of I-beams welded together to form the frame, which are then assembled on site. PEBs can reduce foundation and construction costs compared to concrete buildings since they are generally lighter. Lighter structures also allow for smaller cranes during construction, reducing costs. The document provides details on the design and assembly of PEBs.