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 ...

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 ...

For every system design, engineers must determine how much accuracy is necessary. All components put into the system affect this accuracy, even back to the motor. In step motors, accuracy increases ...