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msquared48 - The web stiffeners seen in the sketch will be new to provide stiffening for the slight distortion in the web element. The cover plate will be new....all else is existing. BAretired - the column is fastened to the web of the rafter! The wall girts in the endwall are flush with the...

As you know, a picture is worth a thousand words. Unfortunately, the client does not allow for photographs to be taken (or shared). I apologize for this. mssquared48.....there is provision in the original design that the endwall frame be identical to the other interior frames. The reason...

A little more background. Observation of the exisitng main frame indicates that the original, overall geometry of the main frame was not affected by the explosion/fire event. ishvaaag, thank you for your input.

A pre-engineered metal building has been damaged by an accidental explosion/fire event. The main rigid frame located directly adjacent to the blast forces is also the building's endwall. This endwall main rigid frame also has two endwall columns. The main steel rigid frame rafter exhibits...

I have attached a photograph.......a picture is worth a thousand words!http://files.engineering.com/getfile.aspx?folder=e12162c6-21c1-46f2-9315-6903dc9fefbf&file=019.jpg

I been approached to design an new support system for a rock breaker piece of heavy equipment. The new rock breaker (and support assembly) is to replace an existing rock breaker assembly. The existing rock breaker is mounted partly on an existing concrete wall and partially on a steel wide...

AhmedR, UcfSE, and WillisV.....Thank you for the information. This answers my question.

Has anyone had the opportunity to go through this design section successfully? If so, I am curious how two of the factors were determined: 1) building natural frequency 2) damping ratio, percent of critical Any help, comments or suggestions would be most welcomed. Thanks