joeMack
New Member
I am adding an addition to a building. I want a 4" trapped drain in middle of the room. My understanding is my trap needs to be within 6 feet of a vent. How does one maintain open floor space, while still venting. If, Horizontal venting needs to be 6" above highest fixture dump do I have to drop the whole design farther below grade to achieve horizontal venting below the slab, or am I missing some other options?
Thanks,
Jack of all trades, master of a couple.
Thanks,
Jack of all trades, master of a couple.