1.1 本规范涵盖横截面坚固、弯曲加固、由水硬性水泥、水和矿物骨料制成的混凝土砌体过梁（梁），包括或不包括其他材料。这些过梁适用于承重和非承重应用。 注1: 本规范仅适用于含有钢筋的混凝土砌体过梁。由于建筑规范对砌体过梁的设计施加了限制，所有过梁都必须包含钢筋。混凝土砌体过梁通常不使用抗剪钢筋（箍筋或其他垂直钢筋）制造。 因此，本标准不涉及与此相关的问题。有关进一步的指导，请参阅 砌体结构的建筑规范要求 ，TMS 402.本标准不包括预应力混凝土过梁。 1.2 过梁采用无坍落度混凝土混合物制造，以提供类似于混凝土砌体的表面纹理。本规范适用于拟用于混凝土砌体应用的机械制造和手工夯实混凝土砌体过梁。 1.3 本规范涵盖的混凝土砌体过梁由轻质或正常重量骨料制成，或两者兼而有之。 1.4 本规范未涉及过梁承载力的设计或分析。 结构评估必须单独进行。过梁的强度是多种因素的函数，包括但不限于制造中使用的材料（混凝土材料和钢筋）的特性、钢筋的数量和位置以及制造和养护程序。有关设计和分析方法，请参阅TMS《砌体结构建筑规范要求》 402 1.5 本规范不包括U形过梁或其他非100横截面的过梁 %固体 1.6 本规范不包括灌浆混凝土砌体过梁、预制或铸造的过梁- 现浇坍落度混凝土过梁。 1.7 本标准的文本引用了提供解释性材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应被视为本标准的要求。 1.8 以英寸磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.9 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers concrete masonry lintels (beams) that are solid in cross-section, are reinforced for flexure, and are made from hydraulic cement, water, and mineral aggregates with or without the inclusion of other materials. These lintels are suitable for both loadbearing and nonloadbearing applications. Note 1: This specification covers only concrete masonry lintels containing reinforcement. Due to building code imposed limitations on the design of masonry lintels, all lintels must contain reinforcement. Concrete masonry lintels are not typically manufactured using shear reinforcement (stirrups or other vertical reinforcement). Therefore, this standard does not address issues related to such. For further guidance, refer to Building Code Requirements for Masonry Structures , TMS 402. Prestressed concrete lintels are not covered by this standard. 1.2 Lintels are manufactured using a no-slump concrete mix to provide a surface texture similar to that of concrete masonry. This specification applies to both machine-made and hand-tamped concrete masonry lintels intended for use in concrete masonry applications. 1.3 Concrete masonry lintels covered by this specification are made from lightweight or normal weight aggregates, or both. 1.4 This specification does not address the design or analysis of lintel capacity. Structural evaluations must be performed separately. The strength of a lintel is a function of factors including, but not limited to, the characteristics of the materials used in manufacturing (concrete materials and reinforcement), the amount and location of reinforcement, and the manufacturing and curing procedures. For design and analysis methods, refer to Building Code Requirements for Masonry Structures, TMS 402. 1.5 This specification does not cover U-shaped lintels or those of other cross-sections that are not 100 % solid. 1.6 This specification does not cover lintels of grouted concrete masonry lintels, or precast or cast-in-place lintels of slump concrete. 1.7 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.8 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.