1.1本规范涵盖了用作屋顶覆盖层的粘土砖，其中需要耐久性和外观，以提供指定设计的耐候表面。 1.2瓷砖由粘土、页岩或类似自然生成的泥土物质制成，并在高温下进行热处理（烧制）。热处理必须在颗粒成分之间形成燃烧结合，以达到本规范的强度和耐久性要求（见 点火 和 烧制债券 术语C 43）。 1.3瓷砖在制造过程中通过成型、压制或挤压成型，允许使用成型方法来描述瓷砖。 1.4瓷砖通常为平面或波状矩形，具有各种横截面轮廓、形状、尺寸、表面纹理和颜色。 1.5本规范涵盖了具有不同耐候性的三个等级的瓷砖。定义了三种类型的瓷砖，以覆盖影响外观的特征。 1.6以英寸-磅为单位的数值应视为标准值。

1.1 This specification covers clay tiles intended for use as roof covering where durability and appearance are required to provide a weather-resistant surface of specified design. 1.2 Tiles are manufactured from clay, shale, or similar naturally occurring earthy substances and subjected to heat treatment at elevated temperatures (firing). The heat treatment must develop a fired bond between the particulate constituents to provide the strength and durability requirements of this specification (see firing and fired bond in Terminology C 43). 1.3 Tiles are shaped during manufacture by molding, pressing, or extrusion and it is permitted to use the shaping method to describe the tiles. 1.4 Tiles are generally planar or undulating rectangular shapes available in a variety of cross-sectional profiles, shapes, sizes, surface textures, and colors. 1.5 Three grades of tile having various degrees of resistance to weathering are covered in this specification. Three types of tile are defined to cover the features that influence appearance. 1.6 The values stated in inch-pound units are to be regarded as the standard.