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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May 17, 2012

Detailed Look at Lintel Analysis for Concrete Walls in RISA

RISA-3D now has the ability to design concrete walls with openings for...

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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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March 01, 2012

How to Get a Code Check for Custom Cold Formed Steel Shapes

In order to get code calculations, RISA-3D and RISA-2D need to know what...

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February 23, 2012

How Do I Resolve a P-Delta Instability?

Investigating P-Delta instabilities in RISA-3D (or RISA-2D) can be...

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February 13, 2012

How to Apply a Rigid Diaphragm in RISA-3D

In RISA-3D, rigid diaphragms can be added using the Diaphragm spreadsheet....

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February 06, 2012

How do Plates and Walls interact with each other?

Below is a model of a concrete flat slab (represented by a plate) which is...

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February 02, 2012

Why is Plate Meshing Important?

Aside from the topic of plate connectivity, the concept of plate meshing...

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January 26, 2012

How to Create T-Beams and L-Beams in RISA-3D

Modeling T-beams and L-beams in RISA-3D can easily be done by specifying...

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January 05, 2012

How Do I Assign Joists with Exact Spacing in RISAFloor?

If you want to assign joists in a framing bay with an exact spacing...

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