"Wayne Whitney" wrote in message
...
Hello,

I'm planning to do a 25' run of 2" cast iron pipe between floor joists
and am thinking about how to properly support it. There are pipe
hangers that I could use to support it from above, so I would have to
attach these to the subfloor. I was wondering if instead there is a
type of support I could use that would attach to the joists on either
side. Something like the expandable bar support on a fan-rated
ceiling electrical box. Any suggestions or pointers?


Why not just cut 2x4 and nail it under the pipe between the joists? At the low
end, nail it above the pipe and nail on strapping under the pipe.