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

September 16, 2026

Modeling with Confidence: Understanding Nodes in RISA-3D

Nodes may be small, but they have an outsized impact on your RISA-3D model. They control how loads are transferred through your model. Missing or misplaced nodes can change analysis results if you don’t understand how they influence element behavior. Here are some of the most common ways nodes can affect your design behind the scenes. 1. Plate Loading & Framing How it works: Plates only transfer load and stiffness through their corner nodes. Key considerations: Apply loading as plate surface loads or as nodal loads at the corners Framing elements, such as beams or adjacent plates, must connect at corner nodes to transfer load correctly Check out the articles below to learn more about plates interacting with other elements Tip: Use the Auto Submesh Plates tool to mesh the plate into smaller sections and make sure there is a corner node at crossing members. This tool can be used after the plate is already drawn or automatically while drawing in the plate. Use “Submesh Plates” tool under the “Modify” tab to automatically submesh plates after they are drawn. Use “Automesh of Plates” tool under the “Home” tab to automatically submesh plates as they are drawn. 2. Crossing Member Interaction…

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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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November 03, 2015

How to Investigate the Design Strip Results in RISAFoundation

In RISAFoundation, Design Strips are used to create regions in a slab for...

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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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September 22, 2015

Why Did the Wood Design Values Drop?

You may notice discrepancies in the wood design values when comparing RISA...

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September 16, 2015

How RISA-3D Calculates Member Deflection Ratios

After solving a model, you will see in the Member Deflections spreadsheet...

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September 09, 2015

Why don’t the Beams in my Frame have axial force?

The beams in a lateral force resisting system, such as a braced frame or...

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September 02, 2015

How should I model beams in Revit to make them import into RISAFloor…

Revit offers two options for setting the elevation of beams. The way these...

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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 20, 2015

Residual Rigid Response (Dynamics)

When running a Response Spectrum analysis for seismic design, the response...

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