Table 7. Pedestrian ramps, stairs, steps
Intensity of activity | Zone | Recommended maintained illuminance targets (lux) | Uniformity targets over area of coverage |
Horizontal targets (EH) | Vertical targets (Ev) | |
Visual ages of observers where at least half3) | Visual ages of observers where at least half | If different uniformities apply (EH: Ev) |
| <25 | 25∼65 | > 65 | | <25 | 25∼65 | >65 | Min:Ave | Ave:Min |
Medium | LZ4 | E | 4 | 8 | 16 | C | 2 | 4 | 8 | 4:1 | 5:1 |
LZ3 | D | 3 | 6 | 12 | B | 1 | 2 | 4 | 4:1 | 5:1 (10:1) |
LZ2 | C | 2 | 4 | 8 | B | 1 | 2 | 4 | 4:1 | 5:1 (10:1) |
LZ1 | B | 1 | 1 | 2 | A | 0.5 | 1 | 2 | 4:1 | 5:1 (10:1) |
LZ0 | A | 0.5 | 1 | 2 | - | 0 | 0 | 0 | 4:1 | |