LAC 51:XIV.931. Offset Vents

A. General. In buildings five or more stories in height, offsets in vertical drainage piping having less than a 45° (0.785 rad) slope shall be vented in accordance with §931.B or §931.C, except as otherwise permitted by §727 of this code. B. Separate Venting. Such offsets may be vented as two separate soil or waste stacks, namely the stack section below the offset and the stack section above the offset. C. Offset Reliefs. Such offsets may be vented by installing a relief vent as a vertical continuation of the lower section of the stack or as a side vent connected to the lower section between the offset and next lower fixture or horizontal branch. The upper section of the offset shall be provided with a yoke vent. The diameter of the vents shall be not less than the diameter of the main vent, or of the soil and waste stack, whichever is the smaller.