stairway

The sole stairway itself must either be pressurized to keep out the smoke or open air.

I watch them walk under a rounded doorframe and descend a stairway leading into a huge auditorium the size of a football field.

There were four rooms on the ground floor and a main stairway to the second floor.

The children closed the door behind them, and walked past wooden railings and stairways and up a ramp to a platform in the back corner of the barn.

Work on decorative details, sculptures and a stairway leading to the building's main entrance is expected to continue over the next decade.