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Wayne Whitney

On 2008-05-26, wrote:

Can anyone explain (or forward a faq) where I can find out more about
the intended use of the following type of elbow fittings:

1. 90deg Street Elbow
2. 90deg Street Closet Elbow
2. 90deg Closet Elbow
3. 90deg Long Turn Elbow
4. 90deg Long Turn Street Elbow

Others have answered about the meaning of "Street" here. As for long
turn 90s, they are required by the plumbing code (UPC) for drains
whenever the outlet of a 90 is horizontal. So if you use a 90 to take
a drain from vertical to horiztontal, or from horizontal to
horizontal, you need a long turn 90. To take a drain from horizontal
to vertical, you can use a regular 90 (not a vent 90). Of course
"horizontal" here really means sloped at 2% or more to provide
drainage.

Cheers, Wayne