D1.K.2. ANSI/AISC N690-1984 Code
For code checking of steel members, STAAD compares the actual stresses with the allowable stresses as defined by ANSI/AISC N690-1984: Nuclear Facilities - Steel Safety-Related Structures for Design, Fabrication, and Erection.
A brief description of some of the major allowable stresses is described herein.