Web Holes in Steel Beams
Web Holes in Steel Beams
(OP)
I am designing a simple 5.4m span steel beam that supports three concentrated loads. The client wants to put twelve circular holes with a diameter ranging from 2" to maximum 4". I am using CISC 9th edition as my reference and according to my analysis using W610x140 is good. The concentrated loads are 282 kN, 570 kN and 600kn with a distance from the left support of 0.5m, 2.4m and 4.4m respectively (loads are factored). Again, the beam is okay after following the design guidelines in the CISC. However my concern is according to CISC, concentrated loads directly above hole locations should be avoided or be at least 'd' (beam depth) from either end of a hole. Some of the holes will violate this requirement. Should I have to worry about these holes which I think are relatively small compare with the depth of the beam?






RE: Web Holes in Steel Beams
if you think the web can handle the loads and the cut-outs then go for it.
if you prefer to follow the guidence, ask for them to be nudged out of the way.
or is there a pressing reason putting the holes where they are (in which case you have to suck it up) ?
if the loads are truly point loads, do you have a stiffener running down the web, supporting the web, distributing the load ?
Quando Omni Flunkus Moritati
RE: Web Holes in Steel Beams
RE: Web Holes in Steel Beams
s/b "The loads will not be directly on the holes" ?
sure, reinforce the holes, but i'd put web stiffeners under the point loads before horizontal stiffeners reinforcing the web holes.
Quando Omni Flunkus Moritati
RE: Web Holes in Steel Beams
BA
RE: Web Holes in Steel Beams
RE: Web Holes in Steel Beams
RE: Web Holes in Steel Beams
RE: Web Holes in Steel Beams
RE: Web Holes in Steel Beams
Holes are spaced 1l inches center to center.
RE: Web Holes in Steel Beams
RE: Web Holes in Steel Beams
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