1.1 本基于性能的规范涵盖了拟用于输送污水、工业废物和雨水以及涵洞施工的钢筋混凝土管道。 1.2 本标准无意规定管道符合本标准所需的材料数量和性能，第节中的除外 6. .特定的产品配方应视为专有产品，并允许对制造商保密。 注1: 本规范仅为制造和采购规范，不包括垫层、回填或现场荷载条件与管道强度分类之间的关系的要求。然而，经验表明，该产品的成功性能取决于管道类别、垫层和回填类型的正确选择，以及安装是否符合施工规范。 此处规定的钢筋混凝土管道的所有者应注意，他必须将现场要求与规定的管道等级相关联，并在施工现场进行检查。 注2: 请注意钢筋混凝土D型荷载涵洞、雨水排水管和污水管规范（规范 C655 ). 本规范与 C655 符合规定的D荷载和管道取样规范。本规范依赖于管道的标准等级（I-V级），并根据第 11 . 1.3 以国际单位制或英寸磅单位表示的数值应单独视为标准。括号中显示了国际单位制。每个系统中规定的值可能不是完全相等的； 因此，每个系统应独立于其他系统使用。将两个系统的值合并可能导致不符合标准。 1.4 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 performance based specification covers reinforced concrete pipe intended to be used for the conveyance of sewage, industrial wastes, and storm water, and for the construction of culverts. 1.2 It is not the intention of this standard to dictate the material quantities and properties required for a pipe to conform to this standard except those in Section 6 . Specific product formulations shall be considered proprietary and allowed to remain confidential to the manufacturer. Note 1: This specification is a manufacturing and purchase specification only, and does not include requirements for bedding, backfill, or the relationship between field load condition and the strength classification of pipe. However, experience has shown that the successful performance of this product depends upon the proper selection of the class of pipe, type of bedding and backfill, and care that installation conforms to the construction specifications. The owner of the reinforced concrete pipe specified herein is cautioned that he must correlate the field requirements with the class of pipe specified and provide inspection at the construction site. Note 2: Attention is called to the specification for Reinforced Concrete D-load Culvert, Storm Drain, and Sewer Pipe (Specification C655 ). The distinction between this specification and C655 is in the D-Load specified and the practice for sampling pipe for conformance to the specification. This specification relies on standard classes of pipe (Class I-V), and sampling in accordance with Section 11 . 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.4 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.