Save this picture! Courtesy of March Studio The stair links Nishi Commercial to Nishi Residential, a multi-storey apartment building, housing 2 floors of hotel rooms, wrapped around a central ...

Lloyd Alter is Design Editor for Treehugger and teaches Sustainable Design at Ryerson University in Toronto. Alternating tread stairs are terrific for saving space; you only put one foot on a ...

The code requirement forces architects to design buildings around a double-loaded corridor, or long central hallways with apartments on either side, similar to a hotel. The requirement also ...