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Steel Interchange


One-Half of Uniform Load Capacity

In the 9th edition AISC ASD Manual, it stated that if the design drawings did not indicate beam end reactions, the connections must be designed for one half the total uniform load capacity shown in the Allowable Uniform Load Tables. Does the AISC 13th edition Manual include this same statement?

Answer

No. The use of the “uniform load capacity” approach for connection design is generally frowned upon, and often results in a ridiculous representation of actual beam end reactions. It is highly recommended that actual beam end reactions be shown on the contract documents; rather than a one-size-fits-all requirement, which often is uneconomical and can be impossible to achieve using standard connections. The requirements for information that must be provided, including for connection design, are covered in Section 3 of the AISC Code of Standard Practice.

 

Kurt Gustafson, S.E., P.E.


Posted on May 20, 2010


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