July 12, 2019
Implementing Realistic Behavior for T/C Members in RISA-3D
Tension or Compression (T/C) Only members are commonly used in steel buildings when modeling braced frames that resist lateral load.
Why Standardization Pays Off More Than New Features Speed in structural design rarely comes from working faster — it comes from removing repeat decisions. Firms that standardize their analysis workflows spend less time rebuilding the same assumptions and more time engineering. Year-end is an ideal time to do this work. Without active deadlines, teams can step back and define how they want projects to start in the new year rather than reacting project by project. RISA Templates: Start Every Model 80% Complete RISA-3D templates are one of the simplest ways to reduce setup time across all projects. Firms often standardize: Typical material definitions and member shapes Default load combinations aligned with current codes Common diaphragm assumptions Frequently used analysis settings When templates are dialed in, engineers stop reinventing the same model structure and can focus immediately on project-specific behavior. For example if your firm uses custom load combinations repeatedily across several projects, then create a firm's custom load combinations template and add them to your default RISA-3D load combinations. See the example video below. Typical Details and Load Rules Reduce Rework Standardizing typical framing conditions and load rules is where operational efficiency really compounds. When gravity loads, lateral load paths,…
Read More
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.
RISA employees and their families recently participated in the 5th Annual Run4Water 5k at Mile Square Park where they raised over $6,400 towards the construction of wells that provide access to clean water to communities in Uganda. Congratulations to everyone involved and for more information about...
RISA-3D has two ways of automatically generating seismic-related Basic Load Categories (BLCs) which can be later referenced in the Load Combinations (LCs):
Connection design according to the new AISC 360-16 (15th Ed.) Steel Manual has now been implemented in RISAConnection. To select this code for your design, simply choose either LRFD or ASD from the Solution tab within the Global Project Settings. The addition of the new 15th Edition code, includes...
The most recent release of AISC 360-16 (15th Edition) includes changes to connection design for rectangular HSS shapes with applied concentrated forces. These changes are now included in RISAConnection v10.
The release of RISAConnection v10 incorporates updates according to AISC 360-16 (15th Edition) including changes to HSS provisions as well as improved design for column webs subject to out-of-plane loading, in addition to other enhancements.
The AISC 360-16 (15th edition) has added a new section (see page 9-14 through 9-17) that gives direction on how to check the out-of-plane loading on the webs of wide flange columns which are subject to axial and/or bending loads. This applies to shear tabs, double angles and gusset plates attached...
Our monthly "Structural Moment" newsletter is the best way to keep up with RISA’s product updates, new releases, new features, training events, webinars and more...