1.1 这包括拟用于输送污水、工业废物、雨水和涵洞施工的无钢筋混凝土管。 1.2 规范的完整公制配套 C14 已开发- C14M ; 因此，本规范中未提供公制等效值。 注1: 本规范仅为制造和采购规范，不包括垫层、回填要求或现场荷载条件与管道强度分类之间的关系。然而，经验表明，该产品的成功性能取决于正确选择管道类别、垫层和回填类型，并注意安装是否符合施工规范。业主应注意，他必须将现场要求与规定的管道等级相关联，并提供或要求在施工现场进行检查。 1.3 以英寸-磅为单位的数值应视为标准值。本标准不包括其他计量单位。 1.4 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 covers nonreinforced concrete pipe intended to be used for the conveyance of sewage, industrial wastes, storm water, and for the construction of culverts. 1.2 A complete metric companion to Specification C14 has been developed— C14M ; therefore, no metric equivalents are presented in this specification. 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 conditions 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 the installation conforms to the construction specifications. The owner is cautioned that he must correlate the field requirements with the class of pipe specified and provide for or require inspection at the construction site. 1.3 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this 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.