• AISC ASD PARAMETERS KX, KY, KZ, LX, LY, LZ, MAIN, TMAIN

    The sequence of performing code check as per AISC 9th edition in STAAD is as follows:

    1. Check for the slenderness criterion.

    2. Check for deflection (if provided)

    3. Check for combined axial and bending.

    The member is designed and checked for rest of the provisions only if it passes the slenderness criterion.
    STAAD includes Ky, Kz, Ly, Lz ,MAIN and TMAIN parameters under design. These parameters govern the…
  • Lvv parameter

    Query : There seems to be problem in classification of the angle section. The double angle section is classified as slender and consequently it is failing. However the if the same member is replaced with single angle, it is passing. the STAAD file is provided below.

    STAAD SPACE
    START JOB INFORMATION
    ENGINEER DATE 10-Apr-08
    END JOB INFORMATION
    INPUT WIDTH 79
    UNIT CM KG
    JOINT COORDINATES
    1 0 0 0; 4 312.501…