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Section R-403.1.4 is amended to read as follows: "Minimum Depth." All exterior footings and foundation systems shall extend below the frost line. All exterior footings shall be placed at Thirty (30) inches below the undisturbed ground.

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12y ago
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11y ago

24"

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12y ago

30 inches

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10y ago

30 inches

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Q: What is the frost line depth in Norfolk va?
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