How to Correctly Define Unbraced Lengths
April 20, 2010

How to Correctly Define Unbraced Lengths

There are four different values for Unbraced lengths in RISA-3D, RISA-2D and RISAFloor. Two are for axial calculations and two are for bending calculations.

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What Are Physical Members?
March 26, 2010

What Are Physical Members?

Members (beams, columns, braces, etc.) are defined in RISA by an I-Node and a J-Node. While you and I see a beam occupying physical space between two columns, most programs see a line between Point I and Point J. This is known as a non-physical member. See the image below:

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