The American Society for Testing and Materials C 1396/C 1393M, Standard Specification for Gypsum Board, has been developed to replace several existing standards in an effort to simplify the reference time for architects and manufacturers when citing gypsum board in blueprints.
Used in the construction of most buildings in North America, more than 30 billion square feet of various types of gypsum board are produced each year. As opposed to product-specific standards, C 1396 covers: