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Technical Solutions Archive

November 1, 2018

RISAFoundation v11.0 can now apply soil overburden to a mat slab to account for the weight of the soil above the foundation. Simply enter a Soil Overburden pressure value for your foundation design in the Slabs spreadsheet. The soil overburden load is utilized to help the mat slab resist overturning during the analysis. The soil […]

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Posted in Technical Solutions | Comments Off on Apply Soil Overburden to a Mat Slab in RISAFoundation

October 25, 2018

The 2016 edition of ASCE Minimum Design Loads and Associated Criteria for Buildings and Other Structures (ASCE 7-16) is now available in RISA-3D v17.0, RISAFloor v13.0, and RISAFoundation v11.0! The seismic & wind load generator has also been updated to include this edition of the code in RISA-3D.  To select the ASCE 7-16 code for your […]

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October 19, 2018

Eurocode lateral torsional buckling capacity is calculated per equations in Annex F in the ENV 1993-1-1:1992. This calculation uses variables C1, C2 and C3. Since there is no generic formula in the Eurocode to calculate the moment gradient factor, C1, RISA will use the widely accepted López, Yong and Serna method by default. The method […]

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October 18, 2018

With the initial implementation of wood wall design in RISA-3D, the wall aspect ratio was calculated as the full height of the wall divided by the width of the region.This was intended to accommodate balloon framed multi-story walls that were drawn as one continuous wall stack.  With recent publications of the ANSI/AWC SDPWS, it has […]

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Posted in Technical Solutions, What's New | Comments Off on Update to Wood Wall Aspect Ratio Limits in RISA-3D

October 11, 2018

With the recent release of RISA-3D v17.0.0 the program now offer the user the option to use Chord Straps between floors of a wood shear wall building in lieu of using hold downs. Chord Straps are a great option for transferring tension load between floors of a multi-floor building and can be installed without accessing […]

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Posted in Technical Solutions, What's New | Comments Off on Hold Downs or Straps? You choose.