In order to define our woods bending limits as a parameter in grasshopper, we plan to calculate the “curvature circle” of a maximum-stressed wood member. We can then have grasshopper stop us from molding our surface if one or more member would require a “curvature circle” that is smaller than our calculated limit. The concept is simple enough, but it’s good to understand what a curvature circle really represents.

It’s basically a circle that is tangent to a point along a curve with the same curvature as the curve at that point.

Here is a visual explanation. Check it out, it’s kinda cool.

http://demonstrations.wolfram.com/CircleOfCurvature/

Courtesy of the *Rain Screen Group V.G.S.*

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