1.1 本规范涵盖了适用于国土安全或恶意入侵可能性很大的商业、工业、政府或机构设施的新建或改造围栏的金属网围栏系统的选择和安装。见 图1 金属网栅栏应用的典型例子。这种类型的围栏系统不推荐用于住宅或公共娱乐设施，如游泳池、学校和幼儿园。 1.2 本规范旨在指导那些负责或关心膨胀金属围栏系统的设计和安装的人，该系统能够拒绝或延迟不必要的进出某个区域。 1.3 此处不推荐或暗示任何特定制造商的产品的优点。项目规范的作者应根据他们自己对产品优点和恶意入侵后果的看法来选择金属网系统的组件。 1.4 单位- 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准。 1.5 本规范并不旨在解决与国土安全相关的所有安全和安保问题（如果有的话）。本标准的用户有责任建立所需和适当的安全级别。 1.6 本国际标准是根据世界贸易组织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e（技术性贸易壁垒）委员会。

1.1 This specification covers selection and installation of expanded metal fence systems for applications on new or retrofit fences for commercial, industrial, governmental, or institutional facilities as applicable to homeland security, or where the possibility of malevolent incursion is significant. See Fig. 1 for typical examples of expanded metal fence applications. This type of fence system is not recommended for residential or public recreational facilities such as pools, schools, and kindergartens. 1.2 This specification is intended to guide those responsible for or concerned with the design and installation of an expanded metal fence system capable of denying or delaying unwanted access into or out of an area. 1.3 No recommendation is made or implied here as to the merits of the product from any particular manufacturer. Choice of component selection for the expanded metal system should be made by the writer of the project specification based on their own perception of the product’s merit and the consequence of a malevolent incursion. 1.4 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 This specification does not purport to address all of the safety and security concerns, if any, associated with homeland security. It is the responsibility of the user of this standard to establish the required and appropriate level of security. 1.6 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.