Thanks guys, yes the KIPs error is the one I was missing in the deflection calculation. Also correct I do need to offset the upward lifting force by 5" inboard. Regards,..
I am attempting to size either an aluminum or steel channel to raise a load. The attachment shows this situation with two equal loads and two equal forces utilized to lift the load. The loads and forces are symmetrical as shown. The lifting force is under the channel pressing on the web. The...
Thanks again gentlemen! I would be using a standard channel with relatively thick flanges. I will look at turning the 'C' up but I think my space will limit this option.
I am looking at rectangular tubing also, the extra height makes things more difficult but sounds much less risky!!
Yes the flange buckling under compression is the potential issue I worry about. I am not structural and do not have the expertise or software to evaluate the loading simulation.
I was considering testing the selected channel and measuring deflection as I apply the lifting force. My thought...
Thanks to all for the help, many good suggestions!!!
I may just go with a channel that is heavier than what is needed to be conservative. In this application the 'C' shape will be pointed down and the single point lifting load will be under the center (inside the 'C'). The load will be...
Thanks for the feedback! I can't use a rectangular section due to the clearances...
Desertfox- are you saying to weld outboard vertical stiffeners to a standard channel to increase the moment-like in using bar stock (I think this makes sense)?
As noted the point load would be only on the...
Attached is a sketch showing better what I am proposing along with the new ideas. The situation has a tight clearance and the reason for the channel shape requirement, otherwise I would just use an I beam.
Hopefully the quick sketch comes through as...
Thanks, great ideas! I was thinking about welding a bar on top of the two unequal angles also to increase strength, I guess by roughly the shear strength of the bar..
Anyone know approximately how much weld conservatively needed to match up to the load, say 2000# load how much weld to hold...
I need to fabricate a small beam to lift a load with center point loading.
A channel shape works best for the beam design due to space constraints. In my situation, I would utilize a channel shape with the 'C' pointing to the ground, lift at the center bottom to lift a equal load on each end...
