Landing Valves shall be located in accordance to the following preference:
- 1. In fire fighting lobby (if provided), for the first landing valve.
- 2. In Fire fighting or Exit Staircase, for the first landing valve.
- 3. In smoke free enclosure or external corridor.
- 4. In the common corridor or area within a protected shaft.
Every part of the floor area shall be within 30 m coverage of a landing valve.