Introducing Bentley Advance Solver for Complex Structure Upgrade your existing STAAD.Pro into STAAD.Pro Advanced Connect Edition In addition to all of the capabilities included in the standard STAAD.Pro, this advanced option offers state-of-the-art and more complex analysis such as: Geometric Non-linear  Steady State   Buckling  Cable  Pushover  Floor Spectrum Under Connect Edition Version, you will also be able to access all STAAD Design Codes and All the features of Section Wizard. The Advanced Analysis Plus Engine license for STAAD.Pro brings with it the following advantages : Faster solver for matrix inversion (reduced analysis time in large models and for those models requiring iterative solution) Memory efficient eigensolution method like Arnoldi/Lanczos for solving large scale eigen problems Load dependent Ritz Vector for efficiently extracting relevant modes for fast and accurate calculation of structural responses. This is particularly useful for large models where huge number of modes has to be extracted to get adequate mass participation. Geometric Non-linear Analysis Pushover Analysis Steady State Analysis Buckling Analysis by eignesolution with ability to plot the buckling mode shapes  Advanced Non Linear Cable Analysis Floor Response Spectrum