EN 17037 §4.2 — View out
Part of EN 17037:2018. See that page for legal status.
Requirement
Assessed for the position(s) of likely occupants. Three sub-criteria:
| Sub-criterion | Minimum | Medium | High |
|---|---|---|---|
| Horizontal sight angle (width of view) | ≥ 14° | ≥ 28° | ≥ 54° |
| Outside distance of the view | ≥ 6.0 m | ≥ 20.0 m | ≥ 50.0 m |
| Number of view layers visible (sky / landscape / ground), over ≥ 75 % of the utilized area | landscape layer only | landscape + one more layer | all three layers |
The overall rating for a space is the lowest of the three sub-criteria ratings.
This is independent of the national codes' own view-out rules where they exist — e.g. Denmark's BR18 §378 is a separate functional requirement, not based on this criterion.
Calculation setup
Assessed from reference points within the utilized area, not the daylight reference plane used for daylight provision. See Annex C of the standard for the reference-point and verification method.
How LUX handles it
Status: 🔜 Planned, not yet supported in LUX Live v0.3.0. View out is not currently computed by LUX.
Sources
See EN 17037's Sources.