The Steel Joist Institute has introduced new specifications for K-Series joists, LH- and DLH-Series joists and Joist Girders that allow the Specifying Professional to utilize joists as part of either an allowable strength design (ASD) or a load and resistance factor (LRFD) design. In addition, the SJI has revised its code of standard practice. The desire of the SJI is that all practicing engineers know the current methods and conventions to be used in selecting joists and providing loading information to the joist supplier. A common design example will be evaluated using ASD and LRFD that will cover various loading conditions involving not only uniformly distributed loads, but concentrated loads and axial loads. Bridging requirements for this design example will also be reviewed.
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