How deep should foundations be for a porch?

How deep should foundations be for a porch? Depth: Footings should extend to a minimum depth of 12 inches below previously undisturbed soil. Footings also must extend at least 12 inches below the frost line (the depth to which the ground freezes in winter) or must be frost-protected. Does a concrete porch need footings? A … Continue reading How deep should foundations be for a porch?