1.1本规程描述了在沟槽或投影装置中正确安装波纹铝涵洞和雨水管的程序、土壤和土壤铺设。典型沟槽安装如图1所示，典型路堤（投影）安装如图2所示。本规程中描述的管道在工厂制造，并提供给作业，长度通常为10至30 ft[3至9 m]，通常为20 ft[6 m]，用于现场连接。本规程适用于按照规程设计的结构 B790/B790M . 1.2以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 1.2.1 国际单位制 — 括号内的文本中显示了国际单位，它们是公制安装的适用值。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 图1典型沟槽安装 图2典型路堤（投影）安装 ====意义和用途====== 波纹铝管在结构上起着柔性环的作用，由压实的周围土壤支撑并与之相互作用。因此，管道周围建造的土壤是结构系统的组成部分。因此，重要的是确保土壤结构或回填土由可接受的材料组成，并且结构良好。使用测试方法现场验证土壤结构的可接受性 D1556 , D2167 , D2937 或 D6938 如适用，并将结果与试验方法进行比较 D698 按照每个项目的规范，是安装可接受结构的最可靠基础。本规程未规定所需的密度和测量方法，但必须在每个项目的规范中确定。

1.1 This practice describes procedures, soils, and soil placement for the proper installation of corrugated aluminum culverts and storm sewers in either trench or projection installations. A typical trench installation is shown in Fig. 1, and a typical embankment (projection) installation is shown in Fig. 2. The pipes described in this practice are manufactured in a factory and furnished to the job in lengths ordinarily from 10 to 30 ft [3 to 9 m], with 20 ft [6 m] being common, for field joining. This practice applies to structures designed in accordance with Practice B790/B790M . 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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. 1.2.1 SI Units — SI units are shown in the text in brackets, and they are the applicable values for metric installation. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. FIG. 1 Typical Trench Installation FIG. 2 Typical Embankment (Projection) Installation ====== Significance And Use ====== Corrugated aluminum pipe functions structurally as a flexible ring which is supported by and interacts with the compacted surrounding soil. The soil constructed around the pipe is thus an integral part of the structural system. It is therefore important to ensure that the soil structure or backfill is made up of acceptable material and is well-constructed. Field verification of soil structure acceptability using Test Methods D1556 , D2167 , D2937 , or D6938 as applicable, and comparing the results with Test Method D698 in accordance with the specifications for each project, is the most reliable basis for installation of an acceptable structure. The required density and method of measurement are not specified by this practice, but they must be established in the specifications for each project.