I set my deflection limit to L/360, but the maximum deflection indicated in the summary of node displacements in PostProcessing shows a deflection of 1.5 inches. Isn this above the limit that I set?
During steel design per the AISC ASD code, there are two types of deflection checks you can perform with STAAD. They are • Check for local deflection. This is usually applicable to members which are connected at both their ends to other members. • Check for the relative displacements between the nodes such as for a cantilever beam. LOCAL DEFLECTION is defined as the maximum deflection between the 2 ends of the beam relative to a straight line connecting the 2 ends of that member in its deflected position. If you go to Help – Contents – Technical Reference – Commands and Input Instructions – Printing Section Displacements for Members you will find a diagram indicating this is in figure 5.41. To obtain more information on the difference between the 2 methods of deflection checking, please go to Help – Contents – Technical Reference – American Steel Design – Design Parameters (which comes after Allowables per AISC code) It will bring up section “2.4 Design Parameters” At the end of the pa
