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Refer to the Deck Beam Span Table below to assist in determining the maximum span of a given beam between posts. Obviously, the larger the beam, the greater the distance it can span between posts. A Redwood 4x6 beam should span no more than 6' between supporting posts.
3 Ιαν 2005 · Size your deck beams and headers with our easy-to-use span table, which allows you to cross reference the post spacing and joist length to determine the right deck beam size. Try it out at Decks.com.
Determine what size deck beam you need based on your support post spacing, as well as the proper concrete footing diameter, with our beam span calculator at Decks.com.
We recommend beams are constructed from two 44 x 145mm Q-Deck deck joists and are placed at maximum centres of 1.8m. In this instance the maximum span between deck post centres is 2.07m (C16) or 2.24m (C24).
28 Σεπ 2023 · But if your deck design has a flush rim beam without any cantilever, or if the cantilever is less than the maximum allowed, then you can employ the new “joist span factors for calculating effective deck joist span” to right-size the beam for your deck design and span greater distances between posts.
8 Νοε 2007 · A beam is a solid structural member that is supported by posts and footings that accepts and transfers the load from joists. Once you know the distance between support posts and the length of the joists that will be supported you can determine the required size by checking our beam-sizing chart.
This illustration shows some common ways to configure deck beams; view the PDF below to get more detailed information about acceptable deck beam and footing sizes. The IRC table allows joist overhangs (cantilevers) past the beam of up to one-quarter of the span between the beam and the ledger.
