A. The easy answer to this question is Yes, but it’s not entirely true. What is true is that you can’t run into trouble locating all splices directly over support posts.

In reality, the most efficient location for splices is at points of inflection. The sketch at right shows the expected deflection of a uniformly loaded beam without any splices spanning from wall to wall across a center post. Note how the beam sags near the centers of the spans, while the deflection curve turns upward over the post. The points...

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