Re: Shared Trap
Posted by hj on April 26, 2004 at 23:20:18:
In response to Re: Shared Trap
It does not wash out the trap. The velocity of the water falling 4 feet will keep it moving fast enough that it "shoots" through the trap and loses its seal.

: : try 30 for a washer and for other fixtures they try to limit it to 18" for reasons other than the buildup/odor, which will occur on the vertical section also, not just the horizontal one.

: I eyeballed 4'; just measuring it: 31" already protrude out of the concrete slab so the vertical to the trap has to be at almost 3.5'. What are the other reasons? Excessive velocity, perhaps tending to wash out the trap, if a vertical section?

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