wing_zealot wrote:
myredracer wrote:
bid_time wrote:
"FORGED" I Beam, are you kidding??
CAST then? ROLLED? Whatever - does it matter as long as it's not the welded-up one?
So let me ask this question. Do you own a pickup truck with a box steel frame? Do you think that "box" was forged, cast, stamped, rolled or welded? The fact is, it really doesn't matter how it was constructed. You can have a stamped aluminum frame or yes a "welded" frame that is stronger than a steel I beam. It depends on thicknesses, strength of material, section modulus, and a whole host of other variables. Your one size fits all postulates are off base. Just like "forged".
Have you ever had to personally deal with the serious issues a 3-piece welded I-beam has and causes? Clearly not. There is NO consideration of "thicknesses, strength of material, section modulus, and a whole host of other variables" used to make one of these frames strong enough to carry the static and dynamic load imposed on them. The way these frames are designed, they have an extreme amount of flex in them and will eventually end up causing problems. The IDENTICAL frame is used on a number of different brands/models of TTs regardless of length or weight of the superstructure. The problem with TT frames is the total lack of any codes/standards/regulations that must be followed for structural design & capacity and companies like Lippert can produce whatever they want with no accountability to the public. I even know of one case where one of these weak frames actually folded at the axles and the rear end of the TT was on the ground and another where a gov't. designated inspection facility deemed the 3-piece welded-up frame to be the worst they'd ever seen, including all the substandard welds they found.
I don't care what the correct definition of I-beam used in a non welded-up beam type is, the entire point of my original post is that the welded-up type is greatly inferior. You are the only one I have ever seen take such an issue to this.
What has a truck frame got to do with a TT frame? The auto industry is entirely different. Maybe we should talk about steel beam design detail in the construction industry too?
