Max Clamp Loading for I-Beam Flange

[GreatNorthEast]

Looking for some advice. Looking to put a padeye clamp on an I-beam to make a lift. This clamp would be bolted onto the bottom flange of an I-beam and hold a suspended load. The clamp would only be contacting the flange on both sides of the web. Just want to know max load of what the flange can handle.

I have been trying to simplify and find a formula but am really struggling. Been a while since I’ve had to do a calculation like this and drawing a blank as to the best formula to use.

Looking at 40ksi yield for flange. Flange thickness of 1/4”. Web is 3/16” Clamp area is 7.5 sq.in. Loading capacity of the clamp is 3000lbs. Expecting to have about a 1000lb load.

Any advice is appreciated!

 

[human909]

A 500kg load sounds like nothing for a 6.35mm flange, though 1500kg might be closer to the limit. I'm not sure what you clamp looks like, but on the conservative side I'd size it using guidance on monorail capacities. Though a good clamp probably would achieve higher loads than this.

This is the sort of clamp I'm used to being used on site:

https://www.bunnings.com.au/gorilla-2t-girder-clamp_p4211407

 

[HTURKAK]

Pls look to the clause (6.7 Resistance of bottom flanges to wheel loads ) of EN 1993-6_ 2007 Eurocode 3 - Design of steel structures - Part 6 Crane supporting structures.

This is code and law resource , so one can reach this document free of charge . Pls look attached doc.




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