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…

Read More

Dynamics

July 21, 2020

Improving Mass Participation in RISA-3D

In structural engineering, a modal analysis uses the overall mass and...

Read More
March 10, 2016

Importing Recorded Seismic Ground Motions

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

Read More
February 24, 2016

What are the Ramp Up/Coast Down Functions in Time History?

Ramp Up Function RISA allows you to define “Ramp Up Functions” to control...

Read More
January 14, 2016

Importing a Time History Function

New in RISA-3D v14 is the introduction of a Time History analysis feature....

Read More
November 24, 2015

Making a Time History Animation Video

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

Read More
May 04, 2015

Ritz Vector Solver (Dynamics) now Available

RISA-3D v13 includes a new Ritz Vector Solver for the Dynamic analysis....

Read More
April 03, 2012

Why Don’t My Response Spectra Reactions Satisfy Statics?

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

Read More

Subscribe to Our Newsletter

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...