The major moment is designated as Mx in design as opposed to Mz used in analysis output. Shear design in columns is based on the shear force envelope with the option to include or exclude axial force influence on concrete shear capacity.įor concrete design, compressive and tensile axial loads have positive and negative signs respectively. Slenderness effects are considered for both non-sway (braced) and sway (unbraced) frames.
The capacity ratio is computed for each column based on capacity interaction surfaces and axial force-biaxial bending in each load combination. The program generates EXACT (not approximate or empirical) P-Mx-My interaction surfaces for all sections according to user-specified design criteria. The concrete column module designs concrete rectangular or circular columns against axial, uniaxial or biaxial bending as well as shear based on ACI 318-02/05/08/11/14 Code Provisions.
