Forum Discussion
JJBIRISH
Mar 08, 2014Explorer
The I beam used on most trailers has no structural integrity the light weight, narrow flange, and practically no webbing in the flange to beam area makes them look stronger that they really are IMHO…
The I beams are light duty and require cambering just to support the weight of the box mounted on them, even on the shorter trailers without sagging... Very few are engineered to carry much more than intended by the mfg. and sometimes not even that…
In addition to the dynamic loads involved that can cause this type damage in extreme cases…
In the picture each of those rust lines you see is a stress crack from overloading on one of the heavier RV I Beams that over extended use finally let go..
the side to side stress while turning causing damage like this is compounded by overloading the rear…
the beginning of a frame failure…
Another failure but farther along… It doesn’t help that the cross members are so small but this is also typical…
These pictures aren’t new and have been posted before… I had many more of them on my old computer…
The I beams are light duty and require cambering just to support the weight of the box mounted on them, even on the shorter trailers without sagging... Very few are engineered to carry much more than intended by the mfg. and sometimes not even that…
In addition to the dynamic loads involved that can cause this type damage in extreme cases…
In the picture each of those rust lines you see is a stress crack from overloading on one of the heavier RV I Beams that over extended use finally let go..
the side to side stress while turning causing damage like this is compounded by overloading the rear…
the beginning of a frame failure…
Another failure but farther along… It doesn’t help that the cross members are so small but this is also typical…
These pictures aren’t new and have been posted before… I had many more of them on my old computer…
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