Comments on: Understanding Table R507.5 from the International Residential Code (IRC): Choosing the Right Deck Beam Size Made Simple https://kiltedbuilders.com/2025/01/29/understanding-table-r507-5-from-the-2018-international-residential-code-irc-choosing-the-right-deck-beam-size-made-simple/ Trust in Tradition, Built for a Lifetime of Memories Sat, 09 May 2026 22:00:12 +0000 hourly 1 By: Justin https://kiltedbuilders.com/2025/01/29/understanding-table-r507-5-from-the-2018-international-residential-code-irc-choosing-the-right-deck-beam-size-made-simple/#comment-39 Sat, 09 May 2026 22:00:12 +0000 https://kiltedbuilder.com/?p=1559#comment-39 In reply to Richard Lesenski.

Hi Rich — good question. For a built-up beam like that, splices should land over posts so each ply has full bearing. Be sure your sizing and spans are based on total design load (live + dead), not just live load. Always worth confirming with your local code requirements and code enforcement for your specific build.

]]> By: Richard Lesenski https://kiltedbuilders.com/2025/01/29/understanding-table-r507-5-from-the-2018-international-residential-code-irc-choosing-the-right-deck-beam-size-made-simple/#comment-38 Sat, 09 May 2026 20:36:53 +0000 https://kiltedbuilder.com/?p=1559#comment-38 I want to build a 27’ 2 ply deck beam with 2×10’s. All butt joints will be offset from one another however do these butt joints need to be over the pillars? Thanks

]]> By: Khloe4379 https://kiltedbuilders.com/2025/01/29/understanding-table-r507-5-from-the-2018-international-residential-code-irc-choosing-the-right-deck-beam-size-made-simple/#comment-6 Tue, 22 Apr 2025 20:19:46 +0000 https://kiltedbuilder.com/?p=1559#comment-6 Very good

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