CFS Version 12 Changes Released June 2019

• Analysis option to include torsion in member checks.
• Torsional forces determined from magnitude and location of applied transverse loads.
• Concentrated bimoments determined from eccentric axial loads.
• Torsion diagrams for torque, bimoment, and angle of twist.
• Bimoment yield strength provided on strength report.
• Member check includes design check for combined bending and torsion.

• Global buckling option saved with each analysis.
• Analysis option for "Deflection Only" load combinations.
• Analysis printout includes summary of member materials, lengths, and weights.
• Concentrated loads treated as point loads instead of short distributed loads.
• New load type for concentrated moment.
• Allow loads in direction that has fully braced segments (K=0).
• Axial load eccentricities treated as concentrated moments in moment distribution.
• Performance improved for display of diagram envelopes.
• Copy Image feature for analysis diagrams.

• Separate multi-level Undo and Redo for each open section and analysis.
• Extended characters implemented for many subscripts, superscripts, and greek symbols.
• Edit menu option to rotate section to principal axes.
• Tolerance on symmetry checks was tightened since calculations are available for non-symmetric sections.
• Member check option for cases where Mx and My include P-δ effects.
• Member check with Kx=0 or Ky=0 or Kt=0 prevents moments or bimoments from being applied.
• Separate output for effective section properties at applied loads.
• Additional trace details for inelastic reserve strength calculation.
• Improved handling of input validation for Section and Analysis input windows.
• Improved performance for license validation.
• Get default user name and company name from environment settings.

• Torsion functionality implemented in Strength and MemberCheck methods.
• Support for multiple simultaneous instances of the Calculation object.

• Lateral-torsional buckling equation for point-symmetric shapes restricted to Z shapes bending about axis perpendicular to the web.
• Stainless steel effective widths for deflection determination use corrected secant modulus calculation.
• Correction to location check between inflection point and support for minor axis bending.
• Column buckling for built-up sections sometimes used modified KL/r when it shouldn't.
• Use rational analysis factors for cases where Fy exceeds Specification limit.