The Buildings built before 2000 were designed under a construction code different from the code in effect today. A construction code is a set of procedures and material standards aimed to ensure uniformity and safeguard public interest, usually developed by a government agency.
The American ASME VIII2 for pressure vessels and ANSI B are two codes used in the chemical process industry. A building code specifies the overall structure of a building, such as wall assemblies, room sizes, foundations, floor plans, roof structures, staircase design, and mechanical and electrical assemblies such as plumbing, drainage systems, lighting, and the fixture standards.
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