How to strengthen I beam deflection
How to strengthen I beam deflection
(OP)
Hi all,
I have a unique problem that I have been asked to solve and would appreciate some input from a more experienced group. I have been tasked with strengthening an existing structure made with two 6" X 6" square tubes as vertical posts supporting a 40' long (10 X 30) I beam horizontally, the tricky part is that this structure is holding up 8 heavy punching bags on trolleys. I need to strengthen the I beam without adding anything to the under side of the beam as it would inhibit the trolley. any thoughts would be greatly appropriated, thank you.
I have a unique problem that I have been asked to solve and would appreciate some input from a more experienced group. I have been tasked with strengthening an existing structure made with two 6" X 6" square tubes as vertical posts supporting a 40' long (10 X 30) I beam horizontally, the tricky part is that this structure is holding up 8 heavy punching bags on trolleys. I need to strengthen the I beam without adding anything to the under side of the beam as it would inhibit the trolley. any thoughts would be greatly appropriated, thank you.






RE: How to strengthen I beam deflection
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: How to strengthen I beam deflection
This is a good source for manually cranking out I values for custom shapes. Try different configurations of the existing beam (known Ix) and your two WWF sections (Known Ix), adding them to different places on the beam.
Long story short and going back to beam theory, you will want them as far away from the centre of your existing beam as possible.
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
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RE: How to strengthen I beam deflection
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: How to strengthen I beam deflection
Regards
RE: How to strengthen I beam deflection
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
KootK - Plug welds is what I am thinking, too.
www.SlideRuleEra.net
www.VacuumTubeEra.net
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
Alternatively, putting the right tube on top could easily solve both lateral and vertical deflection. 3D makes a good point... Jack up the middle of the span with shoring posts to level or a slight upward camber before welding the new section to it.
RE: How to strengthen I beam deflection
I did have one other thought. If I were to add Angel iron to the inside of the beam over the web (like a square tube), would this strengthen the lateral deflection? it would be cheaper, and easier to manage the assembly.
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
Thanks for the help allm
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
1) A tube on top would limit rotation.
2) Your idea with the angles also would limit rotation.
3) If tolerable, an extra mid-span column/diagonal might be your biggest bang for buck. It could probably be detailed so as not to interfere with the trolly.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
RE: How to strengthen I beam deflection
how about adding a second beam parallel to the first, offset maybe 12", and weld/bolts plates top and bottom to make a torque tube ? then you need to take the lateral load down to the ground, something diagonal is suggested, maybe inclined verticals ?
of course, this assumes that the obvious solution (lateral bracing to a wall doesn't work.
another day in paradise, or is paradise one day closer ?
RE: How to strengthen I beam deflection
BA