Ritz Vector Solver (Dynamics) now Available
May 4, 2015

Ritz Vector Solver (Dynamics) now Available

RISA-3D v13 includes a new Ritz Vector Solver for the Dynamic analysis. When running a Response Spectrum analysis for seismic design, some structures experience large numbers of local modes that don’t contribute to the lateral response of the structure. The use of load-dependent Ritz vectors...

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Which Wall Footing Type Should I Use?
April 22, 2015

Which Wall Footing Type Should I Use?

RISAFoundation has the ability to define different types of wall footings. You can define these from the Draw Wall Footings toolbar:

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Cold-Formed Steel Back to Back Design
March 12, 2015

Cold-Formed Steel Back to Back Design

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.

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The Internal Force Summation Tool for Walls
March 10, 2015

The Internal Force Summation Tool for Walls

You may be familiar with the Internal Force Summation Tool (IFST) that is currently present in RISA-3D. However, a new tool has been added which allows you to click point to point within a wall and will only sum forces between these two points. Previously when using the IFST, forces were summed...

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What is a Semi-Rigid Diaphragm?
March 10, 2015

What is a Semi-Rigid Diaphragm?

RISAFloor Concrete Floor Slabs can design be transferred into RISA-3D for lateral design using either a Rigid Diaphragm or Semi-Rigid diaphragm. In RISA-3D, the wind and seismic loads are calculated and then applied into the diaphragm level to distribute the forces to the Lateral Resisting System.

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How to Model With Stem Walls in RISAFoundation
March 5, 2015

How to Model With Stem Walls in RISAFoundation

New in RISAFoundation V7 is a Stem Wall element. This element would be drawn on a slab element for the purpose of transferring wall loads into the slab. You can add stem walls either from the Draw Stem Walls dialog.

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