The width of a circle, using a Straight line that runs directly through the center. Half of a circle's diameter is referred to as the radius.
If you're planning on building circular or
stairways, the diameter, radius and circumference of a circle could make
all the difference in the world.
If you're working with a set of building plans, the diameter of the stairway, should be listed on the floor plan. Every once in a while, you will need to create your own circular stairway measurements or make adjustments, to the architects.
Stairs / Stair Glossary
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