Structural Detail drawings are based on information presented on design drawings created by a structural engineer (structural design drawings) and/or architect (architectural design drawings). The design drawings may also include information related to mechanical systems which is relevant to the fabrication of structural members, and which must necessarily be incorporated by the steel detailer. In the case of buildings, this information is typically related to HVAC design, but in the case of industrial projects may generally include information relating to the ultimate industrial purpose, such as pumps, piping, material handling equipment, and other types of industrial machinery and equipment.