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...
RISAFoundation has the ability to define different types of wall footings. You can define these from the Draw Wall Footings toolbar:
The ability to detach a wall panel from a diaphragm was a feature added in RISA-3D V13.
The ability of RISAFloor ES to design rebar for two way concrete slabs is powerful. Such designs are made much more powerful when they can easily be conveyed on construction drawings.
In a RISAFloor model the columns and beams can be assigned unbraced lengths, or the program may calculate them automatically. This unbraced length information can then be used in RISA-3D. A great example is the frame below:
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.
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...
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.
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.
