10 results found

April 3, 2012 | Tips & Tricks

Why Don’t My Response Spectra Reactions Satisfy Statics?

The applied loads in a response spectrum analysis (RSA) are the applied masses times the accelerations in the response spectra. Each mode of vibration produces its own set of joint reactions. Read More

March 1, 2012 | Tips & Tricks

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

To get code checks, RISA-3D and RISA-2D need to know what type of shape would be most similar to yours. This is because the program needs to use the correct code equations for your shape type. Read More

February 23, 2012 | Tips & Tricks

How Do I Resolve a P-Delta Instability?

Investigating P-Delta instabilities in RISA-3D (or RISA-2D) can be difficult but this article includes some tips & tricks on how to determine what is causing the issue in your model. Read More

November 19, 2011 | Tips & Tricks

RISA-2D Educational Version

Students and Professors can utilize a special version of RISA-2D, which is aimed at learning the basics of structural analysis. Read More

August 18, 2011 | Tips & Tricks

Using Projected Loads in RISA-3D

RISA-3D, RISA-2D and RISAFloor have the ability to project distributed line and area loads onto members. Read More

June 16, 2011 | Tips & Tricks

How to Model a Hole in a Plate

While RISA-3D does not have an explicit tool to punch a hole in a plate, you can use the following steps to manually model them. Read More

March 31, 2011 | Tips & Tricks

How RISA-3D Handles Single Angles

The bending and axial code checks for single angles differ somewhat from other shape types, because single angles behave quite differently in bending and compression. Read More

March 9, 2011 | Tips & Tricks

How Do I Investigate My RISA-3D Model Using the Deflected Shape?

When your RISA-3D model is not behaving as you anticipated, one of the best tools you have is viewing the deflected shape. Read More

February 15, 2011 | Tips & Tricks

What is the Difference Between a Boundary Condition and an End Release?

In RISA-3D, there are numerous options for Member End Releases which should not be confused with Boundary Conditions. End releases are used to define how elements connected to each other. Read More

December 13, 2010 | Tips & Tricks

How to Use the Internal Force Summation Tool in RISA-3D to Design Reinforcement

When you have a plate model for a slab or wall in RISA-3D, the Internal Force Summation Tool (IFST) is a very useful analysis tool to get exactly the forces that you want to design for. Read More