Bending Moment

A bending moment occurs when a force changes from a straight form into a curved or angular one. As the load is applied downward, the rafters go into a bending moment below the collar tie. This bending moment exerts outward thrust on the walls, forcing them out of plumb.
A bending moment occurs when a force changes from a straight form into a curved or angular one. As the load is applied downward, the rafters go into a bending moment below the collar tie. This bending moment exerts outward thrust on the walls, forcing them out of plumb.

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