Contents

•   Improvements in Steel design calculations

  Improvements in Steel design calculations

Several new calculation parameters have been implemented to give more control and more economic design of steel bars:

• We can ask for the check of the resistance of the most often used cross-sections (I-shape, rectangular hollow and tubular cross-sections; Class 1 and 2) according to chapter 6.2.9 of EN1993-1-1, instead of the more general but conservative approximation of paragraph 6.2.1(7). A new check has also been introduced with this option: "Pure normal resistance", which may result higher utilization than Equation 6.41. 
   
• We can check lateral torsional buckling of I-shaped bars according to chapter 6.3.2.3.
   
• We can decide about buckling curves to use for calculations of
  • torsional-flexural buckling, and
  • lateral torsional buckling.
     

• And, by default (not as an extra option), the iterative method used for calculating the effective cross-section of Class 4 sections has been improved to converge in most cases.