What is the rating of an I beam
What is the rating of an I beam
(OP)
Help,
I have two I beams that are not rated as to their max. load. They are used for overhead hoists. There sizes are: 27 inches by 10 inches by 57 feet and the other one is 20 inches by 6 inches by 19 feet. Presenly there isn't any rating of max. load on these I beams.
I have two I beams that are not rated as to their max. load. They are used for overhead hoists. There sizes are: 27 inches by 10 inches by 57 feet and the other one is 20 inches by 6 inches by 19 feet. Presenly there isn't any rating of max. load on these I beams.






RE: What is the rating of an I beam
RE: What is the rating of an I beam
Then - beam flange thickness, web thickness, steel grade (if available), approximate age of the beams (nominal sizes have changed from time to time over the years). Depending on your findings, there may be other issues to look at (end connections, etc.)
After making some calculations, you can get an idea of the load needed for test purposes.
RE: What is the rating of an I beam
I agree with Ron and SlideRuleEra, you have not provided enough information. Those beams are pretty hefty and one is a long span to just assume capacity.
I the past I've determined the capacity mathematically, checking span, bracing and beam condition and then load test. Mathematically gets me in the ball park, load testing (which is required in most US states) qualifies the crane system.
JJF
RE: What is the rating of an I beam
Your question could be very simple or very complicated depending on a lot of information that is not shown- you'l problaby want a professional engineer to examine the situation, rather than just getting a load for a beam.
If the beams weren't designed for the cranes, then it could well be that the allowable load is "zero".
You shouldn't necessarily need to rate the beams at any higher capacity than the cranes that they support- which could simplify matters.
RE: What is the rating of an I beam
Sturms