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Self-framing metal buildings


Self-framing metal buildings are a form of pre-engineered building which utilizes roll formed roof and wall panel diaphragms as significant parts of the structural supporting system. Additional structural elements may include mill or cold-formed elements to stiffen the diaphragm perimeters, transfer forces between diaphragms and provide appropriate. As with most pre-engineered buildings, each building will be supplied with all necessary component parts to form a complete building system.

Regardless of project site location, buildings must be designed in accordance with appropriate engineering due diligence. Buildings should be designed for all applicable loads including the following:

Engineered structural design must comply with the applicable sections of the latest edition of the "Specification for Structural Steel Buildings" of the American Institute of Steel Construction (AISC) and the "Specification for the Design of Cold Formed Steel Structural Members" of the American Iron and Steel Institute (AISI).

Many areas of the United States require the use of state or local building codes which may differ from the "International Building Code". Building codes such as the "International Building Code" and Uniform Building Code (UBC) are markedly different from each other and are often revised at the local level.

Self-framing buildings are within the scope of the National Building Code of Canada (NBCC) as adopted and modified by each Province and Territory. For steel structures, NBCC references CAN/CSA S16 Design of Steel Structures and CAN/CSA S136 North American Specification for the Design of Cold-Formed Steel Structural Members.

Manufacturers are required to be certified in accordance with CSA A660 Certification of Manufacturers of Steel Building Systems. Among other requirements, the manufacturer must supply drawings and documents sealed by a professional engineer licensed in the province or territory of the project site. A Certificate of Design and Manufacturing Conformance, duly completed by an engineer knowledgeable with the design and manufacturing, must be provided to the owner and submitted to the Authority Having Jurisdiction (AHJ)with the permit application.

The building code requires documents to be adequate to allow a review of the structural competence of the building (e.g. NBCC Part 4). The Authority Having Jurisdiction will usually require drawings expressing architectural aspects (e.g. Parts 3, 5 and 11). Due to the limited complexity and size of self-framed buildings, the manufacturer's drawings are frequently accepted for this purpose but the owner should be aware that this may not always be the case.


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