Lloyd Alter is Design Editor for Treehugger and teaches ... dangerous stair shown yet on TreeHugger, being a combo of alternating treads, no handrail on either side, and totally covered in trip ...

The basic design of this interior design trend is a series of alternating treads, where you switch steps from left to right as you ascend or descend the staircase. Their pattern caters to a slim ...

As a result, “the distance between treads on a ... states here that alternate-tread stairs and ladders are intended for “spatial frugality,” likening the design to a staircase that has ...