Purpose is very important while making the different groups of stairs. All of them, have different uses and are built in a different situations and plans. First, the most basic stairs are the straight run staircases which are only straight in one direction. Second, there are the scissor switch staircases which are more complicated to design. In addition, these stairs change the direction for 180 degrees before they continue up to the next floor. Next, there are the winder switch staircases which are more fun and playful. Afterwards, there is a type which has 90 degrees turn and 90 degrees winder turn.
Purpose of the Separate Types of Stairs
Click the link below if you want to read more detailed explanation about the types of the stairs.