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ISO/FDIS 20734

Building environment design — Daylighting design procedure for indoor visual environment

General information

50.00     Jul 23, 2026

ISO

ISO/TC 205

International Standard

91.160.10  

Scope

This document explores and references the different daylight metrics used globally that could have been specifically designed to address different situations (e.g. climates, seasonal specific sunlight availability, cultural values, and seasonal weather patterns). This document also provides quality views criteria for all regularly occupied areas within a building. Finally, the design process is outlined which lists necessary actions during design, construction, commissioning, post commissioning, post occupancy evaluations, and continual improvement.

Life cycle

NOW

PROJECT
ISO/FDIS 20734
50.00 Final text received or FDIS registered for formal approval
Jul 23, 2026