ISO 9836:2017规定了表面积和体积指示器的定义和计算。 在定义面积测量时，ISO 9836:2017使用了三个测量概念: a） 世界上许多地方使用的内部穆罗斯和外部穆罗斯概念； b） 世界上许多地方使用的墙心测量法； c） 这些方法的变化符合某些国家法律或特定类型的建筑。 ISO 9836:2017中定义的表面积和体积指示器用于实际用途，作为测量建筑物性能各个方面的基础或作为规划辅助。换言之，它们应该能够对建筑物的功能、技术和经济方面做出判断。 ISO 9836:2017旨在用于建立 -建筑物及其空间的几何性能规范（e。 g、 在设计、采购程序等方面，或在适当的情况下在建筑法规中， -由设计师、承包商和制造商编制的与整个建筑性能有关的技术文件， -无法有效放置个人工作场所、家具、设备或用于流通的占地面积，以及 -评估、比较或控制与其几何性能相关的建筑物属性。 注:尽管根据国家和/或建筑物类型，世界各地有各种面积测量方法，但由于无法确定实际面积，所有测量方法不一定实用（例如墙中心测量方法）。因此，ISO 9836:2017专门针对实际用途进行测量。

ISO 9836:2017 specifies the definition and calculation of surface area and volume indicators. In defining area measurement, ISO 9836:2017 uses three measurement concepts: a) the intra-muros and extra-muros concept used in many parts of the world; b) the wall centre method of measurement used in many parts of the world; c) variations on these methods to comply with certain national laws or for particular types of buildings. The surface area and volume indicators defined in ISO 9836:2017 are intended for practical use, as a basis for measuring various aspects of the performance of buildings or as a planning aid. In other words, they should enable judgement to be made on functional, technical and economic aspects of buildings. ISO 9836:2017 is intended to be used when establishing - specifications for the geometric performance of a building and its spaces (e.g. in design, purchasing procedures, etc., or in building regulations where appropriate), - technical documentation relating to the performance of whole buildings prepared by designers, contractors and manufacturers, - the amount of floor area that will not be effectively available for the placement of an individual's workplace, furniture, equipment, or for circulation, and - evaluation, comparison or control of the properties of a building which are connected to its geometric performance. NOTE Although there are a variety of methods of area measurement around the world depending on the country and/or types of buildings, all measuring methods are not necessarily of practical use because of inability to identify real area (e.g. the wall centre method of measurement). Thus, ISO 9836:2017 specializes in the measurement solely for practical use.