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The waste stack shall be vertical, and both horizontal and vertical offsets shall be prohibited between the lowest fixture drain connection and the highest fixture drain connection to the stack. Every fixture drain shall connect separately to the waste stack. The stack shall not receive the discharge of water closets or urinals.

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913.2 Vents, Stack Installation
The waste stack shall be vertical, and both horizontal and vertical offsets shall be prohibited between the lowest fixture drain connection ...
P3109.2 Vents, Stack Installation
The waste stack shall be vertical, and both horizontal and vertical offsets shall be prohibited between the lowest fixture drain connection ...
P3109.2 Vents, Stack Installation
The waste stack shall be vertical, and both horizontal and vertical offsets shall be prohibited between the lowest fixture drain connection ...
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A vent stack shall be required for every drainage stack that has five branch intervals or more. Exception: Drainage stacks installed in accordance ...
907.2 Vents, Upper Section
The upper section of the drainage stack shall be vented as a separate stack with a vent stack connection installed in accordance with Section 904.4 ...