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Technical Solutions Archive

February 7, 2019

In this video, you’ll learn how to investigate your RISA-3D model for P-Delta divergence errors. This type of error is common in general structural analysis software and has two major causes: a model that is unstable or a model that is too flexible. For this investigation, two separate steel frame models will be used to […]

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January 3, 2019

RISA-3D is one of the few pieces of software on the market offering wood shear wall analysis and design accompanied by multiple design methods to best suit your detailing needs. With options of Segmented, Perforated, or Force Transfer around Openings (FTAO), RISA gives users the ability to analyze and design their wood shear walls as […]

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December 20, 2018

Applying a Custom Rebar Layout in RISA-3D: To begin creating a custom rebar layout, simply click the Custom Rebar Layout  icon at the top of the menu bar to create a custom rebar layout. In RISA-3D, within the rebar layout dialog you can create a custom rebar layout for concrete beams, concrete columns and even […]

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November 16, 2018

The base material at the location of a weld may have less strength than the weld itself. In this case it will control the overall strength of the welded connection. In order to account for this, RISAConnection uses a weld strength reduction factor (α) which we call the Base Material Proration Factor. This factor is […]

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November 16, 2018

RISAConnection assumes by default that your vertical brace connection is a one-sided connection without any outside influence or load transfer from other connected elements.  Using this assumption, the design shear and axial force at the beam to column sub-connection is determined using simple statics per the Uniform Force Method in the AISC Steel Design Manual. […]

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