TL;DR
A beam splice is the joint where two lengths of a deck or floor beam meet end to end, structurally acceptable only when it lands directly over a post or its support, never in the open span between supports. Deck guides based on IRC R507, including the DCA 6 standard, require this bearing placement, since a mid-span connection turns the beam into two weak cantilevers held by fasteners.
What it means
A beam splice is the joint where two lengths of a deck or floor beam meet end to end, structurally acceptable only when it lands directly over a post or its support, never in the open span between supports. Deck guides based on IRC R507, including the DCA 6 standard, require this bearing placement, since a mid-span connection turns the beam into two weak cantilevers held by fasteners. Built-up beams of doubled or tripled 2x lumber stagger the joints of individual plies over different posts with a prescribed nailing pattern. Inspectors sight along deck beams for these joints, a frequent finding on amateur-built decks.
Where it sits in the glossary
Beam splice is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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