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Lessons / Water and durability
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Room for air underneath
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A 2x10 frame 8 in off the ground, with almost no air moving under it.
Every number here is a working estimate. Check it with your building authority.Turn JavaScript on to work the lesson. The drawing shows how it starts.
The rule this lesson teaches
Framing near the ground stays wet; clearance lets it dry, and anything within 6 in must be treated.