What do the Unbraced Lengths represent?
November 19, 2014

What do the Unbraced Lengths represent?

Understanding unbraced lengths and how RISA software accounts for them is essential in the design of any project. In RISA there are three main types of unbraced lengths:

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How do Unbraced Lengths affect Analysis?
November 12, 2014

How do Unbraced Lengths affect Analysis?

The axial compression and flexure strength of beams and columns is dependent on the spacing of elements which provide bracing along the length of those members. You may specify unbraced lengths as a fixed distance or by using RISA’s Unbraced Length Commands. These unbraced lengths are used for...

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Code Requirements for Panel Zone Shear Deformation
October 29, 2014

Code Requirements for Panel Zone Shear Deformation

Code requirements for consideration of panel zone shear deformation can be confusing. This blog post discusses some of the basis for these code requirements and when one can consider them to be met and when one cannot.

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How Do I Create Offset Connections in RISA-3D?
September 11, 2014

How Do I Create Offset Connections in RISA-3D?

By default RISA-3D draws all members as line elements located at the centroid of the cross-section. However, connections between members are not always aligned with a member’s centroid. There may be horizontal or vertical offsets in the connection. To account for these you can add rigid links to...

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What is a Rigid Link in RISA-3D?
August 27, 2014

What is a Rigid Link in RISA-3D?

A rigid link is a member element in RISA-3D that can be used for many advanced modeling procedures. It is so useful that it is included as one of the default member Section Sets, as you’ll see below.

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How to Use Moving Loads
June 19, 2014

How to Use Moving Loads

RISA-3D and RISA-2D will allow you to add a moving load pattern to your model and include it in your envelope solution.

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How to Build a Report with Spreadsheet Information, Graphic Images,…
May 7, 2014

How to Build a Report with Spreadsheet Information, Graphic Images,…

Print reports can contain spreadsheet information, graphic views, detail reports for specific members and load combinations, and external images such as hand calculations, title pages, etc. When in a model view, you will notice a button with an image of a camera on it in the toolbar:

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How to Add a New Pattern to the Moving Load Database
February 18, 2014

How to Add a New Pattern to the Moving Load Database

RISA-3D and RISA-2D come with a default list of existing moving load patterns. These are listed in the Moving Loads Library which can be viewed by clicking on the Moving Load Patterns button in the Advanced tab.

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