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walkereng
walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 2370
Experience:  Over 30 years of Structural Engineering experience.
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How do I determine the maximum load which can be applied to

Customer Question

How do I determine the maximum load which can be applied to the following beam: a fully braced 30 foot long W18x35 Zx:66.5 Zy 8.06 Fy 50 Ksi using ASD, also what happens to the capacity of the beam if the flange becomes unbraced?
SO far I have used P=Fy(A)/1.67 then KL/r Is that the right track? I get 295Ksi I don't have a steel manual, does the steel manual go beyond 200 on table 4-22 "Available Critical Stress for Compression Members?"
Submitted: 12 months ago.
Category: Structural Engineering
Expert:  StructuralEng replied 12 months ago.

Hello

Expert:  StructuralEng replied 12 months ago.

Are you asking about a beam or a column?

Expert:  StructuralEng replied 12 months ago.

Are you an engineer?

Customer: replied 12 months ago.
My question clearly states that I am asking about a beam !!! I am not an engineer I am a student. Are you an engineer?
Expert:  StructuralEng replied 12 months ago.

I am an engineer. I ask, because the question does not make sense as stated. Kl/r does not matter for a beam. Neither do the compression member provisions.

Expert:  StructuralEng replied 12 months ago.

The formula you're using also makes no sense for a beam.

Customer: replied 12 months ago.
Yesterday at around 4;30 I asked a question where is the answer ?
Expert:  StructuralEng replied 12 months ago.

I have already opted out. Good luck with your class.

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