Then the maximum moment is then calculated using the minimum shear capacity based on the bolt shear and bolt bearing capacities.The C' coefficient is defined in the AISC 14th Edition, Eqn 7-21: T max-bolts also uses the Instantaneous Center of Rotation method to calculate the bolt eccentricity coefficient, C'.This is equivalent to calculating M n per AISC 14th edition equation (J2-7) which is very complex. T max-weld uses the Instantaneous Center of Rotation method to calculate M n = M max.If a plate is too thick then its flexural yield capacity can be greater than the other capacities listed above, resulting in a non-ductile failure due to flexure.Įach of the three conditions above checks the maximum thickness based on AISC 360-10 (14th edition) eqn (10-3):
The plate's flexural yield capacity is a direct function of its thickness.
The plate must yield in flexure prior to rupturing in flexure. The plate must yield in flexure prior to any bolt failure (including bolt bearing) due to flexure. The plate must yield in flexure prior to any weld failure due to flexure. In order to ensure adequate rotational ductility in a shear tab shear connection the following three conditions must be satisfied: See AISC 14th Edition Manual, -49 Shear Tab (Single-Plate) Connection End-Plate Shear ConnectionĪ warning is given if plate thickness exceeds 5/8". The following checks are performed: Double Angle Shear ConnectionĪ warning is given if angle thickness exceeds 5/8". Rotational ductility ensures that a shear connection will allow the necessary rotation to act as a "pinned" connection without a brittle failure. These checks are only done when enabled through the Global Parameters dialog. RISAConnection provides checks for rotational ductility for shear connections, as prescribed in the AISC 14th Edition Manual. Single Angle Shear ConnectionĪ warning is given if angle length does not exceed 1/2 of the T dimension of the supported beam. Shear Tab (Single-Plate) ConnectionĪ warning is given if plate length does not exceed 1/2 of the T dimension of the supported beam. End-Plate Shear ConnectionĪ warning is given if plate length does not exceed 1/2 of the T dimension of the supported beam. 
The following checks are performed: Double Angle Shear ConnectionĪ warning is given if angle length does not exceed 1/2 of the T dimension of the supported beam. RISAConnection provides checks for erection stability, as prescribed in the AISC 14th Edition Manual. This section focuses on checks concerned with stability, ductility and geometry restrictions.
Stability and Geometry Checks Stability and Geometry Checks
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