Three-Quarter Turn Straight Stairs Drawings & Dimensions

Three-Quarter Turn Stairs change their directions through 270° by the time the stair reaches the next floor. The direction is changed three times through three right angles, with the upper flight crossing the bottom one. In this type of construction, an open well is formed.

三级旋转楼梯通过旋转270°改变其方向，直至楼梯达到下一楼层。该方向在经过三个直角后改变三次，上层楼梯跨越下层楼梯。在此种建筑结构中，形成了一个敞开式的井室。