M/I to build Powell neighborhood with nearly 400 homes Inside, the home opens up to a lavish double staircase and tiled front entry. Walking between the joint stair cases, one enters a sprawling ...

But recent research suggests double-staircase designs are no safer than the single-stair layouts common in Europe and Asia. A new Los Angeles City Council proposal envisions a future in which ...

As the figure below shows, single-stair buildings tend to have a smaller footprint than the two-stairway, double-loaded corridor buildings most apartment dwellers are familiar with. Single-stair ...