1.1 该标准涵盖建筑估算中使用的现场需求、办公室管理费用和利润的分类。这种分类是所有形式的建筑所共有的，其组成部分是任何建筑成本估算的一个组成部分。该分类为建筑可行性、规划、设计和施工阶段的分析、评估和监控提供了一致的参考。与Uniformat II和其他元素分类一起使用，包括分类 E2168 它还确保了建筑工作的经济评估在不同时间和不同项目之间的一致性。通过估算和成本记录的一致性，它增强了施工各个阶段的报告——从可行性和规划到工作文件的准备、施工、维护、修复和处置——并且是实践中描述的报告过程的必要部分 E1804 . 1.2 该分类适用于所有建筑工程。 1.3 这种分类不是基于建筑物的永久性物理要素（如分类中所定义和分类 E1557 ).相反，分类项目是所有建筑工程共有的主要非永久性成本组成部分。无论物理结构中使用的设计、规格、施工方法或材料如何，它们都执行相同的功能并提供相似的需求。 1.4 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》中确立的国际公认的标准化原则制定的。

1.1 This standard covers a classification for field requirements, office overhead, and profit for use in construction estimating. This classification is common to all forms of construction, and its components are an integral part of any construction cost estimate. The classification serves as a consistent reference for analysis, evaluation, and monitoring during the feasibility, planning, design, and construction phases of building. Used in conjunction with UNIFORMAT II and other elemental classifications, including Classification E2168 , it also ensures consistency in the economic evaluation of construction work across time and from project to project. Through consistency in estimating and cost recording it enhances reporting at all stages in construction—from feasibility and planning through the preparation of working documents, construction, maintenance, rehabilitation, and disposal—and is a necessary part of the reporting process described in Practice E1804 . 1.2 This classification applies to all construction work. 1.3 This classification is not based on permanent physical elements of construction (as defined and classified in Classification E1557 ). Rather, the classification items are major, non-permanent cost components common to all construction work. They perform the same function and provide for similar needs regardless of the design, specification, construction method, or materials used in the physical construction. 1.4 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.