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 tread at ...

To lay out a set of stair stringers from scratch requires a little math, but not much. Equally important is some quiet time to run the numbers and at the same time to think about the construction ...

Whether a major feature of the entryway or tucked to the sides of the home, the staircase offers lots of design potential. Stair design should feel continuous and intentional, much like how the ...