
August 27, 2020
VIDEO: Creating Custom Shapes in RISA-3D
Learn how to build custom steel and concrete shapes using RISASection and then import them into RISA-3D to incorporate them in analysis and design.
The Transfer In and Transfer Out checkboxes in RISA’s Wall Design Rules spreadsheet help you control how forces from regions above and below openings are redistributed during design. Whether you're excluding precast elements or ignoring small segments over openings, these settings let you tailor the force path to match real-world behavior. What Do "Transfer In" and "Transfer Out" Actually Do? In RISA, wall panels automatically generate design regions above and below openings, in addition to the full-height wall segments. Transfer In → Applies to in-plane loads (axial/shear). When checked, the in-plane forces from the small regions above and below openings are transferred into adjacent full-height wall regions. Transfer Out → Applies to out-of-plane loads (bending/shear). When checked, out-of-plane forces from regions above/below openings are transferred to adjacent full-height regions. This includes: Line loads (like from floors or roofs) located directly above the region The self-weight of the wall segment for that region These forces are added into the adjacent region’s total force calculation for design. Important Note: This is a design-level adjustment only. It does not affect the stiffness matrix used in analysis. The stiffness from all regions remains in place during solution. After solving, the forces collected in the…
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Learn how to build custom steel and concrete shapes using RISASection and then import them into RISA-3D to incorporate them in analysis and design.
When using RISA Integration between RISASection and RISA-3D, RISA-2D and/or RISAFloor, there are a few common mistakes that people make when attempting to access the RISASection files from the Shape Database.
There are multiple options in RISA-3D and RISAFloor to create a custom shape not available in the program databases. The first, is to utilize RISASection in order to create cross-sections, calculate section properties and import the shape directly into RISA-3D. For more information on integrating...
Use RISASection to find the properties of built-up steel sections, then model beams using the same section properties in RISA-3D and get full code-checks using AISC 360. This webinar will teach you how to use RISASection quickly and easily to determine complex section properties.
RISASection v2 includes updated torsional shape properties for a more accurate analysis. Check out the video below for more information:
In order to get code calculations, RISA-3D and RISA-2D need to know what type of shape would be most similar to yours. This is because the program needs to use the correct code equations for your shape type.
RISASection 2.0 includes the ability to assign your section as one of the predefined hot rolled steel Shape Types (Wide Flange, Channel, Tube, etc.). This means that when the shape is imported into RISA-3D, you will now be able to get design results and code checks for the member.
The latest version of RISASection, includes a powerful new DXF import feature. This feature allows the user to import any 2D geometry into RISASection for the calculation of the cross-sectional properties and the import into RISA-2D, RISA-3D or RISAFloor for use in the larger model.
Modeling built-up or composite sections can easily be done in RISASection. Because the properties of such a section are computed using a weighted summation of the transformed shape properties, RISASection uses a Property Multiplier to specify the relative weight of a single shape in a built up...
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