BS ISO 21723:2019 pdf free.Buildings and civil engineering works -Modular coordination – Module.
2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 6707-1, Buildings and civil engineering works – Vocabulary 一Part 1: General terms  3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 6707-1 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: 一ISO Online browsing platform: available at https://www.iso.org/obp IEC Electropedia: available at http://www.electropedia.org/3.1 modular storey height vertical dimension between two modular floor planes of two consecutive floors [SOURCE: ISO 1791:1983, 25] 3.2 modular floor height vertical dimension of the modular floor zone between the modular plane of the upper surface of the floor covering and the modular plane of the finished ceiling [SOURCE: ISO 1791:1983, 27, modified -“a floor covering” has been replaced with “the floor covering”] 4 Specifications 4.1 Basic module 4.1.1 The basic module is represented by the letter M. 4.1.2 The international standardized value of the basic module is 1M=100mm NOTE Annex A provides imperial units.4.2.4 The 15 M, 30 M and 60 M series correspond to the series in a system of preferred numbers which contain the factor five. These series can also be extended to use larger increments in the series of the multimodule 60 M such as 120 M or larger. 4.2.5 In the selection of sizes from Table 1, preference should be given to the series of the largest multimodule compatible with functional requirements and economic design. 4.2.6 The preferred multimodular sizes for horizontal dimensions are primarily intended for sizing of components, groups of components and spaces. 4.2.7 The series are standardized for general guidance. Functional, economical and especially national considerations may justify the use of multimodular sizes which are not included in the series.BS ISO 21723 pdf download.