w-beam web openings
w-beam web openings
(OP)
I have a 16W77 Steel beam in my garage that spans 32'(holds up a 2nd level workshop/loft). If possible, I have a need to go through the beam in 3 places, equally spaced with 2"wide X 3" high openings. Will the openings weaken the beam? and where would the best location of the openings be, towards the top ,middle or bottom of the web? Thanks for any help.






RE: w-beam web openings
FYI, the web is 0.455" thick and may prove difficult to cut the holes with a hole saw. Are the floor joist above the beam framed on top of the beam? If so, you might be able to find a 'pocket' to run your 'conduit' through as oppossed to cutting holes in the beam.
RE: w-beam web openings
Better have someone check it, though.
RE: w-beam web openings
Surely you meant to say mid-height of the web and not flange. Wouldn't want to confuse our automotive friend.
RE: w-beam web openings
RE: w-beam web openings
Cutting holes in the flange, as opposed to the web, is a completely different issue and must be treated carefully.
RE: w-beam web openings
Just out of curiosity do you have any experience or reference for flange cutouts.
I've been looking around and the only reference I can find is Reduced Beam Sections in moment frames - creates plastic hinges for earthquake resistant design.
Have you seen anything else