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Technical Solutions Archive

September 20, 2018

RISAFoundation v11.0 now includes the added ability to enter a passive pressure for slabs. The passive pressure represents soil pressure along the perimeter of the slab and will contribute to the sliding resistance of the slab. RISAFoundation will multiply the passive pressure by the vertical area along the slab’s perimeter in both the slab’s local […]

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Posted in Technical Solutions, What's New | Comments Off on Passive Resistance for Mat Slabs

August 23, 2018

“Why am I receiving a P-Delta instability error when I run my DL + LL load combination? I don’t see this error when I run my lateral load only combination.” This is a very popular question that we receive in technical support and it is quite understandable. Why would the model solve with a lateral […]

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Posted in Technical Solutions | Comments Off on P-Delta Instability with Gravity Only Loads

July 26, 2018

Have you ever received error message 2054 when modeling in RISAFloor? This error means that the program has detected an unsupported deck edge, but often there is confusion about what this means.  RISAFloor expects that you have either a beam or a wall parallel to every deck edge in your model. This allows for the […]

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Posted in Technical Solutions | Comments Off on How to Troubleshoot an Unsupported Deck Edge

July 19, 2018

The answer to this often asked question is, YES!  RISA-3D includes material specific checkboxes on the Design tab of the Load Combinations spreadsheet that allow you to define the load combinations that shall be checked for members of different materials.   Therefore, when you have a multi-material model, you can generate two sets of Load […]

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Posted in Technical Solutions | Comments Off on Can I Design a Multi-Material Model for ASD & LRFD with one Solution?

July 12, 2018

RISA-3D now includes plate elements in the Material Takeoff. Plate elements are categorized by material, size (thickness), number of pieces, volume and weight.  The summation of total pieces, volume and weight is also available. We are continuously looking to improve the program.  If you are interested in providing feedback or suggestions for new features, please […]

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Posted in Technical Solutions, What's New | Comments Off on Plate Elements Now Included in RISA-3D Material Takeoff