Version 4.0 features the latest design codes for the Beam Design module: AISC 13th Edition ASD and LRFD design. Version 4 also continues to support previous versions of the AISC code (ASD 9th Edition and LRFD 1st and 2nd Editions). In addition to the code updates, Version 4.0 includes an updated shape database, new automatic load combination generation, live load patterning for both ASD and LRFD, independent top and bottom flange LTB bracing, seismic load case option and an all new size optimization engine!