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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February 04, 2016

How to Add a Drop Panel

In RISAFloor ES, you can quickly thicken the slab in the column strip area...

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January 20, 2016

Why Did My Reinforcing Change in ACI 318-14?

The new ACI 318-14 code has been implemented into RISA-3D V14, RISAFloor...

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January 14, 2016

Importing a Time History Function

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

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January 07, 2016

Mechanically Graded Wood Design now Available

Mechanically graded wood materials have been added for the AWC NDS 2015...

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December 22, 2015

Wood Design per AWC NDS 2015 Wood Code

The latest versions of RISA-3D and RISAFloor now incorporate the AWC NDS...

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December 16, 2015

Concrete Design per ACI 318-14 Concrete Code now Available

The new ACI 318-14 code has been implemented into RISA-3D v14, RISAFloor...

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December 09, 2015

Envelope Detail Report Results

RISA-3D v14 introduced envelope detail reports for all material members....

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November 10, 2015

How Do I Define Specific Member Sizes in RISAFloor?

RISAFloor is a design program in which it takes basic shape criteria about...

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October 28, 2015

Tolerance Between SP Joists vs. Normal Joists

Have you been in RISAFloor performing a steel product design and noticed...

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