DIN EN ISO 6284:2024-04

This document specifies methods for the indication of limit deviations on construction documents. Deviations are a common part of the built environment which are often left to operatives on site to resolve. With the development of prefabrication, there is recognition that control of deviations is an essential requirement to improve the quality of building and infrastructure works. It is important for architectural designers, product manufacturers and constructors to indicate limit deviations and work to these, where they exist. The digitization of construction requires both graphical and alphanumeric information to be presented in a formal way to achieve both human-readability and machine-readability. Data templates are a formal representation method adopted widely to describe exchange information or product specifications for machine-readability, see DIN EN ISO 23387. This document focuses on how to provide indication methods for limit deviations that are humanly recognizable, which is essential given that humans are ultimately the decision-makers, even though more and more tasks are carried out with the assistance of computers. Therefore, this document provides two ways to indicate limit deviations: a) classical graphical or symbolic representations; b) natural language property items for data templates. ISO 6284:2023 has been prepared by ISO/TC 10/SC 8 "Construction documentation" without the participation of German experts. Attention is drawn to the fact that the terminology standard ISO 6707-1:2020, which this document refers to, has not been adopted into the body of German standards. Therefore, no standardized German translations are available for these terms, and different definitions may have been used for them in other DIN or DIN EN standards. The responsible national standardization committee is Working Committee NA 005-01-08 AA "Bauzeichnungen" ("Construction drawings") at DIN Standards Committee Building and Civil Engineering (NABau) in conjunction with Working Committee NA 152-06-05 AA "Technische Produktdokumentation" ("Technical product documentation") at DIN Standards Committee Technical Fundamentals (NATG).