1.1 本规范涵盖了整体浇筑的单室预制钢筋混凝土箱形截面，用于涵洞施工和雨水工业废物和污水的输送。 1.2 本规范是SI规范的配套规范 1433米 ; 因此，本说明书中没有显示SI等效物。 注1: 本规范主要是制造和采购规范。然而，标准设计也包括在内，用于开发这些设计的标准见 附录X1 该产品的成功性能取决于正确选择箱形截面、垫层、回填，并注意安装符合施工规范。此处规定的预制钢筋混凝土箱形截面的购买者应注意，需要将荷载条件和现场要求与规定的箱形截面进行适当的相关性，并在施工现场进行检查。 1.3 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 single-cell precast reinforced concrete box sections cast monolithically and intended to be used for the construction of culverts and for the conveyance of storm water industrial wastes and sewage. 1.2 This specification is the companion to SI Specification C1433M ; therefore, no SI equivalents are shown in this specification. Note 1: This specification is primarily a manufacturing and purchasing specification. However, standard designs are included and the criteria used to develop these designs are given in Appendix X1 . The successful performance of this product depends upon the proper selection of the box section, bedding, backfill, and care that the installation conforms to the construction specifications. The purchaser of the precast reinforced concrete box sections specified herein is cautioned that proper correlation of the loading conditions and the field requirements with the box section specified, and provision for inspection at the construction site, are required. 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.