7.3 Circulation space requirements
| DIMENSIONS FOR: | |||
| RESIDENTIAL BUILDINGS | INSTITUTIONAL AND COMMERCIAL BUILDINGS | ||
| 7.3.1 | Clear width of private corridor or staircase (internal stair serving one residence only) | Min 900mm | N/A |
| 7.3.2 | Clear width of common corridor or staircase | Min 1100mm | Min 1500mm (unless calculated to be greater according to fire escape rules) |
| 7.3.3 | Height of staircase handrail above pitch line of staircase | Min 900mm | Min 900mm |
| 7.3.4 | Staircase riser | Max 190mm | Max 190mm |
| 7.3.5 | Staircase tread | Min 250mm | Min 280mm |
| 7.3.6 | Height of doors | Min 1800mm | Min 2000mm |
| 7.3.7 | Width of door to habitable room | Min 850mm | Min 900mm |
| 7.3.8 | Width of door to main entrance | Min 900mm | Min 1000mm |
| 7.3.9 | Width of other doors | Min 700mm | Min 850mm |
| 7.3.10 | Habitable room floor to ceiling height in high altitude | Min 2450mm | Min 2450mm |
| 7.3.11 | Habitable room floor to ceiling height in low altitude | Min 2750mm | Min 2750mm |
| 7.3.12 | Water closet, bathroom or store floor to ceiling height | Min 2100mm | Min 2300mm |
| 7.3.13 | Mezzanine floor to ceiling height | Min 2100mm | Min 2300mm |