Yeah, steel would work.

Either way though, youd have ti shim out he joist adjacent t the pipe.
That ipe's circumference, in the OP's picture, is wider than the thickness
of the joist. There's no way to sister that joist with either steel or wood
unlesss you shim the original joist on both sides.

Me, I'd uste the wood sisters. Steel ain't cheap, is not as readily
available aswood, and can be very hard to work with without some special
tooling for cuting to length and width, drilling bolt holes, etc.

YMMV.

--
Jim McLaughlin

Reply address is deliberately munged.
If you really need to reply directly, try:
jimdotmclaughlinatcomcastdotcom

And you know it is a dotnet not a dotcom
address.
wrote in message
ups.com...
I would add steel plates plenty long and go from there