Framing & StructuralQuestion 447 of 700
Where an exterior deck beam bears on a supporting post, what is the BEST practice for the beam-to-post connection?
a.Toenail the beam to the top of the post
b.Rely on gravity and the deck load to hold the beam in place
c.Use a positive mechanical connection such as a post cap that ties beam to post
d.Notch the post halfway and set the beam in the notch without fasteners
Explanation
A positive mechanical connector (post cap or equivalent hardware) transfers load and resists lateral displacement and uplift between beam and post. Toenailing is weak and splits wood, gravity alone provides no uplift or lateral resistance, and an unfastened notched bearing can let the beam shift or roll off the post.
Law Reference: 2025 CA Residential Code §R507.5Practice all 700 questions free — no signup required.
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