What is referred to as the inside radius in the context of circular stair stringers?

The inside radius in the context of circular stair stringers refers specifically to the distance from the center of the circular stairway to the inside stringer, which creates the inner boundary of the steps. This radius is crucial in determining the curvature and overall layout of the circular staircase, as it directly influences the dimensions of the treads and the overall size of the stairway.

In circular stair design, understanding the inside radius is essential for ensuring that the space is used efficiently and that the steps are comfortable to traverse. The inside radius helps in calculating not only the dimensions of the stairs but also affects the angle of the ascent and the overall aesthetic of the staircase.

Other options do not accurately represent the concept of the inside radius within the context of stair construction. For instance, the distance from the center to the outer edge pertains to the outside radius and not the inside stringer. The total width of the stair involves a broader measurement that includes both inside and outside elements, while the height of the stair structure relates to the vertical measurement and does not correspond to the radius concept.