July 17, 2024
What's New in RISAConnection v15.0.1?
RISA is pleased to announce the release of the latest of RISAConnection v15.0.1. The release of RISAConnection v15.0.1 incorporates the following enhancements and updates:
Rigid diaphragms in RISA-3D are a powerful way to model how floor systems distribute lateral loads. By forcing all connected nodes to move together in-plane, they effectively capture the stiffness of a concrete slab or diaphragm deck—often simplifying analysis without sacrificing accuracy. However, when rigid diaphragms are combined with sloping members, they can introduce unexpected behavior that changes how the structure resists loads—sometimes creating a hidden “tension tie” that doesn’t exist in the real system. When Rigid Diaphragms Alter the Model’s Behavior Consider a simple moment frame with sloped beams under gravity loads—common in pre-engineered metal buildings. Model 1: No rigid diaphragm applied Model 2: Identical frame, but with a rigid diaphragm located at the eaves When reviewing the strong-axis bending moments, column base reactions, and thrust forces: The first frame behaves as expected. The second frame (with the rigid diaphragm) shows reduced bending moments and smaller thrust reactions at the column bases. At first glance, this might seem like an improvement—but it’s actually unrealistic behavior caused by the diaphragm. Why It Happens: The “Hidden Tension Tie” In the model with the rigid diaphragm, the diaphragm prevents the eaves from moving apart under load. This effectively turns the diaphragm into…
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RISA is pleased to announce the release of the latest of RISAConnection v15.0.1. The release of RISAConnection v15.0.1 incorporates the following enhancements and updates:
RISA is pleased to announce the release of the latest of RISAConnection v15.0. The release of RISAConnection v15.0 incorporates the following enhancements and updates:
RISA is pleased to announce the release of the latest of RISAConnection v14.0.1. The release of RISAConnection v14.0.1 incorporates the following enhancements and updates:
RISAFloor now includes the ability to design web openings (with and without reinforcement) for steel and composite steel beams according to the AISC design code. To learn more, view the video below. For more information about web opening design in RISAFloor, search Web Openings in the RISAFloor...
Version 20.0.2 allows users to integrate models between RISA-3D and SDS2, including model geometry, members sizes and end reactions.
RISAFloor Version 16 provides engineers the ability to analyze and design hot rolled steel WT and LL shapes. This functionality was previously implemented in RISA-3D and will allow users greater flexibility when designing their steel structures. Additionally, WT and LL shapes can be specified and...
Engineers choose RISA-3D and RISAFloor for the design of all types of steel structures. As a result, we are constantly improving the software and its acceptance of various types of design elements and materials. The latest improvement includes back-to-back hot rolled steel channels which are now...
The ability to design buckling restrained braced frames has been added to RISA-3D when you integrate your model from RISAFloor. In collaboration with CoreBrace, this new feature came as part of the release of RISA-3D v19.0.0 and RISAFloor v15.0.0.
RISAConnection Version 12 now supports skewed shear tab connections. With this enhancement, engineers have the option to skew a wide flange, a tapered wide flange or a channel beam with the following supporting members:
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