How to strengthen I beam deflection 1

[Tnewbon57]

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.

 

[Tnewbon57]

I can't do a mid span column, the bags are on trolleys so theye van be pushed to the side, and leave the floor open for mixed martial arts training. A Center post would interfere.

 

[XR250]

If the deflection issue is sideways, I would weld some rectangular tube to web of the beam as close to the trolley wheels as possible.

 

[rb1957]

if lateral loads are the issue, then you need lateral loadpaths ...

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 ?

 

[BAretired]

Add two angles above top flange with vertical leg pointing down (similar to channel cap but with down hand welding only).

BA