1.1 本规范涵盖了为特定D荷载设计的钢筋混凝土管，用于输送污水、工业废物和雨水，以及建造涵洞。 1.2 本规范是规范的SI配套规范 C655型 ; 因此，本规范中没有提出英寸-磅当量。符合规范要求的钢筋混凝土管 C655型 根据本规范可接受 C655M 除非业主禁止。 注1: 经验表明，该产品的成功性能取决于正确选择管道强度、垫层和回填类型、注意安装是否符合施工规范以及是否在施工现场进行充分检查。 本规范不包括垫层、回填、现场荷载条件与管道强度指标之间的关系或异常环境条件下的耐久性要求。这些要求应包含在项目规范中。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。

1.1 This specification covers reinforced concrete pipe designed for specific D-loads and intended to be used for the conveyance of sewage, industrial wastes, and storm water and for the construction of culverts. 1.2 This specification is the SI companion to Specification C655 ; therefore, no inch-pound equivalents are presented in this specification. Reinforced concrete pipe that conform to the requirements of C655 are acceptable under this Specification C655M unless prohibited by the Owner. Note 1: Experience has shown that the successful performance of this product depends upon the proper selection of the pipe strength, the type of bedding and backfill, the care that the installation conforms to the construction specifications, and provision for adequate inspection at the construction site. This specification does not include requirements for bedding, backfill, the relationship between field load conditions and the strength designation of pipe, or durability under unusual environmental conditions. These requirements should be included in the project specification. 1.3 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.