[LazyPup]

Kactus,,if the code in that link is the current code for your jurisdiction they are grossly out of date. The opening part of that code states it is based upon the 1993 BOCA code.

When I purchase a Code book I always make a point of paying the extra money to get the looseleaf binder edition and subscribe to the changes, as the codes are commonly changed quarterly.

I would certainly contact your local code authority to see if it has been updated, as there are many provisions in that code that will not meet any of the state of the art codes.

If you will look in the illustration forum,on the top of page 2, I previously posted an illustration detailing how to convert an S-trap to a P-trap.