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In the calculation for the glulam shear load coefficient, Cv, in O86 6.5.7.3 the program was splitting a span up into numerous segments based upon:
the points that are displayed in the shear diagram
points are entered as Points of Interest
the point that is added for “Shear at a distance d”
span ends
zero intercepts
abrupt changes in shear
However, the design code only uses the last of these – the ends, “inflection points” (zero intercepts), and abrupt changes, to define the segments. Because of the non-linearity in the equations, even though the shear force is linear over the course of all the extra segments created, the resulting Cv factor was different than if only the designated points are used to create the segments.
This effect was usually small, and conservative, but has been corrected.