What is correct about OLT's regarding stair access?

The correct answer is that the interior stairs lead to the cellar. In the context of Occupied Large Tenements (OLTs), it's important to understand the structural design and safety protocols that govern building access in emergencies.

In many OLTs, the interior staircase is designed to provide not only access to the upper floors but also an exit route to the cellar, which can be critical during a fire or other emergencies. This feature allows occupants to evacuate safely and gives firefighters a route for access to lower levels where smoke or fire may be present.

Understanding the layout of OLTs, including stair access to cellars, is vital for effective firefighting operations. Firefighters need to be aware of where they can find occupants, how to navigate the building efficiently, and where potential hazards may exist. This knowledge directly influences their tactics and safety when responding to emergencies in such structures.