I studied this about 25 years ago, when I was taking some
fire protection courses. The 45 are far less restrictive.

--
Christopher A. Young
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"Zootal" wrote in message
. 97.131...
Here is a somewhat more esoteric question. I have to snake
around some
stuff, and I can do it with two 90 degree elbows, or two
"45" degree
elbows. In the end, will using the 45 elbows give noticably
increased water
flow? The pipe goes into a shower valve that is 1/2 inch,
and the interior
of the valve is even more restricted, so I'm thinking in
this case it won't
make any difference.

But out there in the real world where we bend this way and
that way, does
it matter how sharp the bend is wrt water volume?