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Steel Bent Plate Versus Rolled Angle

Steel Bent Plate Versus Rolled Angle

Steel Bent Plate Versus Rolled Angle

(OP)
Assuming that a steel "L" shaped bent plate has the same dimensional properties as a rolled steel angle, are the structural strength capacities the same?

I can see the bent plate having a slightly less strength if the "k" dimension is less but I don't believe that there is a process in place that would quantify the flexural capacity of the bent plate (i.e., other than using Section F10 of Chapter F in the AISC specs).

Any advice or suggestions is appreciated.

RE: Steel Bent Plate Versus Rolled Angle

Technically a section that is bent into it's shape is "Cold Formed" and there is an entirely different design method from AISC's steel manual. See Cold Formed Steel Design by Wei-Wen Yu. There are also some AISI guidelines on Cold Formed Design. The cold bending actually makes the section stronger, so designing the AISC way works ok.

RE: Steel Bent Plate Versus Rolled Angle

Something to note is that the bend location tends to get thinner. We have a piece of 7x7x5/16 bent plate in our office where you can easily see the reduced section at the bend.

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