RISAFoundation includes the ability to utilize “nested” load combinations. Currently, the Load Combinations spreadsheet in RISAFoundation is limited to ten columns of Basic Load Cases (BLCs) and Factor combinations. However, there are times where you may need to include additional entries to your...
Strength Design (LRFD) according to the AWC-NDS 2015/2018 code has been implemented into RISAFloor v14.0. To select this code for your design, simply choose this code from the Codes tab within Global Model Settings.
RISAFloor v14 now includes floor vibration calculations per the 2nd Edition of AISC Design Guide #11. To select this code for your design, simply choose AISC DG 11 2nd Edition in the Beam Vibrations drop-down from the Codes tab within Global Model Settings.
The new release of RISA-3D is right around the corner! Check out our teaser videos to enjoy a sneak peek at some of the most exciting new features!
Last week, RISA employees spend two days volunteering at the Second Harvest Food Bank of Orange County, CA. Both days were spent at the Food Distribution Center, where staff and volunteers worked together to sort, package and distribute enough food to feed 250,000 men, women and children each...
Tension or Compression (T/C) Only members are commonly used in steel buildings when modeling braced frames that resist lateral load.
When modeling building structures using steel or composite steel floors, engineers typically utilize rigid diaphragms to distribute lateral loads (wind and seismic) to lateral load resisting elements such as shear walls, moment frames and braced frames. Rigid diaphragms represent a plane of very...
When using semi-rigid diaphragms in a RISAFloor/RISA-3D model, it is possible to see negative moments at the ends of pinned beams as a result of the link between the semi-rigid diaphragm and the beam-column connection.
