1.1 本指南涵盖了绿屋顶系统设备的选择、安装和维护注意事项。 1.2 本指南适用于广泛和密集的绿色屋顶系统。 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。 1.4 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制定适当的安全、健康和环境实践，并在使用前确定监管限制的适用性。 1.5 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。 ====意义和用途====== 5.1 本指南介绍了屋顶绿化系统在种植方面的性能特征。屋顶是一种极端环境，风力强且多变，对太阳的酷热和紫外线辐射几乎没有保护。植物材料的选择对屋顶绿化系统的成功至关重要。 5.1.1 本指南仅提供一般指导。咨询专业园艺师、屋顶绿化顾问、景观设计师，或与知识渊博、经验丰富、熟悉屋顶绿化技术和植物的类似专业人士合作，这一点很重要。 5.2 确定屋顶绿化系统的这些性能特征可提供信息，以便于对设施的工程方面进行评估。这些方面可能包括结构设计要求、机械工程和热设计要求以及消防和生命安全要求。 5.3 确定绿色屋顶系统的这些性能特征提供了信息，以便于评估一个绿色屋顶系统相对于另一个绿色屋顶系统的性能。

1.1 This guide covers the considerations for the selection, installation, and maintenance of plants for green roof systems. 1.2 This guide is applicable to both extensive and intensive green roof systems. 1.3 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. 1.4 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, health, and environmental practices and to determine the applicability of regulatory limitations prior to use. 1.5 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. ====== Significance And Use ====== 5.1 This guide addresses performance characteristics for green roof systems with respect to the planting. A rooftop is an extreme environment with strong and variable wind patterns and little or no protection from the sun’s intense heat and ultraviolet radiation. Selection of plant material can be crucial for success of the green roof system. 5.1.1 This guide provides general guidance only. It is important to consult with a professional horticulturist, green roof consultant, landscape architect, or work with similar professionals that are knowledgeable, experienced, and acquainted with green roof technology and plants. 5.2 Determining these performance characteristics of green roof systems provides information to facilitate the assessment of engineering aspects of the facility. Such aspects may include structural design requirements, mechanical engineering and thermal design requirements, and fire and life safety requirements. 5.3 Determining these performance characteristics of green roof systems provides information to facilitate assessment of the performance of one green roof system relative to another.