March 12, 2015

Cold-Formed Steel Back to Back Design in RISA

Cold Formed Steel channels are often built-up as back-to-back sections to help strengthen them. RISA-3D can design the Cold Formed Steel back-to-back channel and track sections. The Shape Selection dialog will allow you to model the built –up sections by selecting “Back to Back” shown below.


There are a variety of different code checks that are done for back to back sections per the AISI and these are all done automatically for you. There is one new parameter required by RISA, the spacing of the connections between the back-to-back members in order to properly calculate the slenderness (KL/r). This additional spacing input required is listed as “a” in the Members double click dialog or the Member spreadsheet:

Cold Formed Steel Member Spreadsheet

The Detail Report for Back-to-Back members shows all the controlling section properties including Effective Area, Section Modulus, and Moment of Inertia.



This entry was posted by RISA News on Thursday, March 12th, 2015 at 8:00 am and is filed under Technical Solutions, What's New. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

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