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support posts

Support posts are mounted on the footings and support the main deck beams that the joists will sit on. Posts must be spaced properly and anchored solidly to the footings.

10. Framing a Level Change

When framing a multi-tiered deck with more than one level, frame posts can be shared between more than one level. Simply stack the double beams on top of the beams for the lower level, using the same width of material. The joists for your upper level should be sized to match the height of the deck steps, so that all changes of elevation are similar, to prevent trip hazards.

Shared deck support post illustration.

3. Post Hole Excavation and Post Setting

Your post footings are the foundation of your deck and just like your house, the deck is only as strong as its foundation. Our deck plans are designed to be used with poured footings and posts set in brackets attached to the top of the footing.

The footings are constructed using a round cardboard tube form that is 8” in diameter (often called a sonotube, after a popular brand). You should check your local building codes to ensure this is adequate to pass inspection in your area.

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