1.1 该分类建立了成本汇总分类，用于估算计划和项目成本。 1.2 该分类可应用于包括一个或多个施工工程项目的施工方案和项目。 1.3 该分类并非基于施工的永久物理要素（如分类中的定义和分类 E1557 例如）；相反，分类项目是大多数计划和项目估算中常见的成本组成部分。 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在使用前制定适当的安全、健康和环境实践，并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====== 4.1 计划和项目估算是规划和实施任何工作计划的必要部分。 4.2 这些估计数供参与计划和项目的规划和管理的人员使用。它们是建立初始预算的重要组成部分，并为持续更新提供了框架，允许在项目及其各个项目的整个生命周期内进行成本控制。 4.3 用户包括业主、开发商、设施程序员、财务经理、公司控制人员、高管、项目经理、项目经理和包括生命周期成本分析师在内的专业成本规划师。 4.4 它们还可用于风险管理，并提供了一个用于计划和项目时间表的主要活动阶段的一致列表。

1.1 This classification establishes a classification of cost summaries for use when estimating program and project costs. 1.2 This classification can be applied to construction programs and projects that include one or more construction work projects. 1.3 This classification is not based on permanent physical elements of construction (as defined and classified in Classification E1557 for example); rather, the classification items are cost components common to most program and project estimates. 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 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 ====== 4.1 Program and project estimates are a necessary part of planning and implementing any program of work. 4.2 These estimates are used by persons involved in the planning and management of programs and projects. They are an essential part of establishing initial budgets and provide a framework for continuing updates permitting cost control through the life of a program and its various projects. 4.3 Users include owners, developers, facilities programmers, financial managers, company controllers, executives, program managers, project managers, and specialist cost planners including life cycle cost analysts. 4.4 They are also of use in risk management, and also provide a consistent list of major activity phases for use in program and project time schedules.