Risa Tips & Tricks: How to Use Our Structural Analysis Software

September 24, 2026

One Model, Many Materials: Understanding Multi-Material Structural Design with Integrated Design Tools

Modern building design is increasingly defined by hybrid systems. Engineers are combining multiple building materials within a single structure to meet demands for efficiency, constructability, and performance. This approach allows each material to be used where it performs best, but it also introduces a level of complexity. Coordinating different material behaviors within one structural system and load path is no longer a niche challenge. It is becoming standard practice. What is Multi-Material Structural Design Multi-material structural design is the practice of using different building materials in one coordinated structural system so that load paths, stiffness, and movement are all working together. In real projects, this shows up as: Mass timber framing on top of a concrete podium Steel transfer beams carrying concrete slabs above Masonry cores tied into wood gravity framing These systems are now common in commercial and residential projects, especially as teams look for more sustainable and efficient buildings. Why Multi-Material Design Matters Using multiple materials allows engineers to fine-tune structural systems and capitalize on the best attributes of each material. Multi-material structural systems help you: Provide stiffness where you need it, such as at a concrete core Allow for long spans and complex geometries by utilizing steel…

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Seismic (3)

April 19, 2016

OCBF Seismic Brace Connections

Vertical Diagonal Brace connections and Vertical Chevron Brace connections...

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March 31, 2016

OCBF & SCBF Seismic Brace Connections now Available

RISAConnection v6 has introduced the ability to design vertical brace...

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March 10, 2016

Importing Recorded Seismic Ground Motions

The Pacific Earthquake Engineering Research center (PEER) has a large...

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November 24, 2015

Making a Time History Animation Video

Time history analysis solves for normal analysis results (joint...

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August 25, 2015

What does the Include Structure Weight Checkbox Do for Seismic Loads?

In the Seismic Loads dialog there is a checkbox for “Include structure...

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August 11, 2015

What Loads Transfer from RISAFloor to RISA-3D?

RIAFloor designs the gravity system and then integrates with RISA-3D to...

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July 14, 2015

How to Import a Seismic Moment Connection into RISAConnection

Design for seismic connection detailing is now available in RISAConnection...

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October 29, 2014

Code Requirements for Panel Zone Shear Deformation

Code requirements for consideration of panel zone shear deformation can be...

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April 03, 2012

Why Don’t My Response Spectra Reactions Satisfy Statics?

The applied loads in a response spectrum analysis (RSA) are the applied...

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