Originally Posted By: jpeck
This post was automatically imported from our archived forum.
David,
You've got your separation distance crossed up.
The main thing to remember is 10' horizontal separation or 2' higher than the top of any door, openable window or air intake opening (don't forget soffit vents and other building openings which could allow intake air into the building). Rarely will you find where the 4' will apply - if the plumbing vent termination is below any of the above openings, it must be at least 4' below that opening.
From the 2003 IRC.
P3103.5 Location of vent terminal. An open vent terminal from a drainage system shall not be located less than 4 feet (1219 mm) directly beneath any door, openable window, or other air intake opening of the building or of an adjacent building, nor shall any such vent terminal be within 10 feet (3048 mm) horizontally of such an opening unless it is at least 2 feet (610 mm) above the top of such opening.
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Jerry Peck
South Florida