本文件规定了与建筑物可用性和可达性的设计和施工方面有关的建筑元素、建筑组件、组件、配件和产品的一系列要求和建议，即进入建筑物、建筑物内的流通、正常条件下建筑物的出口，以及火灾时的疏散。 本文件也适用于多单元住宅建筑中的公共空间。关于住宅单元的建议见附件A。 本文件还包含与从相关场地边界进入一栋或一组建筑物直接相关的室外设施的规定，或与公共场地内这类建筑物之间的规定。 本文件不涉及外部环境要素，例如公共开放空间，其功能是独立的，与特定建筑的使用无关。 本文件适用于新建筑和现有建筑中的新工程。 本文件介绍了现有建筑的“特殊考虑”概念，适用于特别难以满足规定要求，因此无法提供完全无障碍的情况。通过“对现有建筑的特殊考虑”，规定了可接受但受限的可达性水平。 在经济和/或技术上可行的情况下，对现有建筑的特殊考虑不得用于其他情况，或以不合理的方式引用，或作为无法实现更高可达性的借口。 本文件中规定的与轮椅使用相关的尺寸与ISO？7176-5和ISO/TR？13570-2800mm宽和1300 mm长中规定的常用轮椅尺寸和使用者的足迹有关。 本文件主要为残疾成年人编写，但其中包括一些关于儿童特定无障碍需求的建议。

This document specifies a range of requirements and recommendations for the elements of construction, building assemblies, components, fittings and products that relate to the design and constructional aspects of usability and accessibility of buildings, i.e. access to buildings, circulation within buildings, egress from buildings during normal conditions, and evacuation in the event of a fire. This document also applies to the common spaces in multi-unit residential buildings. Recommendations regarding residential units are given in Annex？A. This document also contains provisions with respect to outdoor features directly concerned with access to a building or a group of buildings from a relevant site boundary, or between such a group of buildings within a common site. This document does not deal with elements of the external environment, such as public open spaces, whose function is self-contained and unrelated to the use of a specific building. This document is applicable to new buildings and new work in existing buildings. This document introduces the concept of ‘exceptional？considerations？for？existing？buildings’ for situations where it is exceptionally difficult to meet the requirements specified and, thus, impossible to provide full accessibility. By means of ‘exceptional considerations for existing buildings’, an acceptable, though restricted, level of accessibility is specified. An exceptional consideration for existing buildings is not to be applied in other situations or invoked in an unjustified manner, or as an excuse for not achieving a higher level of accessibility, where this is economically and/or technically feasible. The dimensions stated in this document, relevant to the use of wheelchairs, are related to the footprint of commonly used wheelchair sizes and users as specified in ISO？7176-5 and ISO/TR？13570-2, 800？mm wide and 1？300？mm long. This document is primarily written for adults with disabilities, but it includes some recommendations on specific accessibility needs of children.