![]() GYPSUM BOARD CONSTRUCTION WHAT IS GYPSUM BOARD? Gypsum board is the generic name for a family of panel products that consist of a noncombustible core, composed primarily of gypsum, and a paper surfacing on the face, back and long edges. Impact Resistance - Drop height at penetration through impacted membrane.) Tested on 2x4 (nominal) wood studs. ![]() ![]() Impact point located at midpoint between studs. Type X gypsum board 400 2750 Impact Resistance (typical) (ASTM E 695) (Using 50 lb (22.7 kg) leather bag, one test per specimen. Four Types of Gypsum Plaster Boards and their Thermophysical Properties Under Fire Condition.
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