scope:

This International Standard establishes the general principles of building environment design taking into account aspects of sustainability related to indoor environmental quality and healthy indoor environment for the occupants. The standard promotes an approach in which the various parties involved in building environmental design collaborate with one another to provide a sustainable building environment. The unique features of the design process are articulated by the following aims:

- to provide the indoor building environment the aims concerning sustainability from the initial stage of the design process, including building plant life cycle, together with owning and operating costs considered at all stages of the design process,

- to assess the proposed design with rational criteria for indoor air quality, thermal, acoustic, and visual comfort, energy efficiency and HVAC system controls at each design stage

- to make iterations between decisions and evaluations of the design throughout the design process.

The building environment design involves not only architectural design associated with environmental quality but also environmental system design associated with effective controls measures. This International Standard is applicable to building environment design for new construction and retrofitting.