Bearing Length on a Wood Plate
Required bearing length and actual compression-perpendicular-to-grain stress for a point load on a wood plate, with a pass/fail against the allowable Fc-perp.
Formula and source
A_req = P / (Fc_perp * Cb); required bearing length = A_req / width; actual f_c_perp = P / (width * provided_length).
Per the National Design Specification (NDS) for Wood Construction - compression perpendicular to grain and the bearing-area factor Cb, by name; Fc-perp values user-supplied.
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