I recently ran across a PVC waste line that exited the structure directly undernieth the footing, in a perpendicular fashion. Is this allowed. I was under the impression that the "zone of compresson" under a footing could not be compromised. Additionally, the IRC [2604.4] states no trenches [parallel to] to bottom of bearing footing within 45 degrees. This situation is not parallel to, but my client wants to know what code is in question.

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John Thompson
Shelterworks Home Inspections
Missoula, MT

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