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Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 38,419
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I mentioned it was a UBC code. UBC has jurisdiction over most building west of the Mississippi. Yes, you cannot have an elevation change inside at a door. It's dangerous. I have a house that I visit often and miss that step every time. One place I see a drop off of about 4" is the door to an attached garage. It usually swings in, so there may be the exception.
I'll have to look at my code book. But you are not covered me thinks by the UBC (Uniform Building Code administered by ICBO).
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