ANSI Z97.1:2015 pdf free download – For safety glazing materials used in buildings – safety performance specifications and methods of test
3 Definitions
asymmetric material: Glazing in which component layers of its construction makeup are different in thickness, kind, type or pattern texture about its interlayer and/or central plane surface. bent glass: Flat glass that has been shaped while hot into a form that has curved surfaces. bubble: A visible gas pocket in the interlayer material or in the plastic glazing sheet material, or between the interlayer and another layer of glass or plastic glazing sheet material. cracking: The visible breaking, splitting or fissuring, either partially or completely through the thickness of an individual layer of material. crack-free particle: A portion of a broken test specimen that is determined by identifying the smallest possible perimeter around all points in the portion of the broken test specimen, always passing along un-separated cracks or exposed surfaces. crazing: The visible breaking, splitting or fissuring of a material, typically patterned with a network of fine lines that do not penetrate through the thickness of an individual layer of material. delamination: A condition in which one of the glass or plastic glazing sheet material layers loses its bond to an interlayer and separates physically. discoloration: A visibly noticeable chemical or process induced color deviation in the appearance of a material.
aminated glazing: A manufactured assembly consisting of at least one sheet of glass bonded to at least one other sheet of glass or plastic glazing material with an organic interlayer. Note: when broken, numerous cracks appear, but glass fragments tend to adhere to the interlayer. See ASTM C1 1 72 for additional information. 2-ply glass laminates: Laminated glazing consisting of two sheets of glass bonded together with an interlayer. multi-ply glass laminates: Laminated glazing consisting of more than two layers of glass and/or plastic glazing sheet material bonded together by interlayers, where both of the outer surfaces are glass. glass/plastic laminates: Laminated glazing consisting of one or more layers of glass and one or more layers of plastic glazing sheet material bonded together with one or more interlayer(s) in which the plastic surface faces inward when the glazing is installed in a structure. mirror glazing: Architectural glazing materials whose intended use is based on their reflective quality. These materials are composed of a reflective surface and may have a substrate of glass, or plastic.
plastic glazing material: A single sheet of synthetic plastic material, a combination of two or more such sheets laminated together, or a combination of plastic material and reinforcement material in the form of fibers or flakes. This material contains as an essential ingredient an organic substance of large molecular weight; is solid in its finished state; and, at some stage in its manufacture or in its processing into finished articles, can be shaped by flow. See ASTM C1 349 for additional information. safety glazing materials: Glazing materials so constructed, treated, or combined with other materials that, if broken by human contact, the likelihood of cutting or piercing injuries that might result from such contact is reduced. tempered glass: (also known as toughened glass). Glass of any shape that has been subjected to a thermal treatment process characterized by uniform heating followed by rapid uniform cooling to produce compressively stressed surface layers. See ASTM C1 048 for additional information.