If the Fire Warden decides to evacuate using stairs, which is NOT a critical piece of information needed?

The critical piece of information that is not essential for a Fire Warden deciding to evacuate using stairs is the overview of the building's layout. While having a general understanding of a building's layout can be helpful for various reasons, during an evacuation, the emphasis is primarily on immediate dangers and safety protocols.

Information about smoke in the stairs is crucial, as it directly impacts the safety of the evacuation route. Knowing the location of the fire is also essential for determining the safest path to evacuate occupants and avoid danger. Additionally, receiving instructions from the Fire Command Station ensures that the evacuation aligns with the broader response efforts being coordinated by the fire department.

In contrast, an overview of the building's layout, while beneficial in many scenarios, is less critical during an urgent situation where immediate decisions must be made to ensure safety. Thus, the focus is more on immediate risks rather than comprehensive knowledge of the building.