Symmetric model output issues 1

BadgerPE · Apr 11, 2011

Hey all,

I have an existing PEMB building that I am trying to model to determine whether or not structural modifications (ie additional x-bracing or portal frames) will be needed for an addition to the building. I have attached the model for review. When evaluating wind loading in the Z-direction I am getting two differing results for the corner columns of the symmetric building and I can't for the life of me figure out why. Any help would be greatly appreciated.

JAE · Apr 11, 2011

I think your gravity is going the wrong way.

BadgerPE · Apr 11, 2011

Nevermind. Finally figured it out after 2+ hours of troubleshooting. I had my self weight gravity load in the x-direction instead of the y-direction. Not completely sure why this affected the model the way it did though. So I guess I have a little more research to do.

BadgerPE · Apr 11, 2011

Wow,

Good call JAE. I was just typing that I realized that. Why does this affect the output the way it did?

JAE · Apr 11, 2011

Well - you had a Z direction wind and an X direction gravity which resulted in an angled resultant to an otherwise symmetrical frame. I assume, upon changing to -Y gravity you have symmetrical results now right?

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Symmetric model output issues 1

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