
February 27, 2023
IBC 2021 Is Now Available!
RISA-3D, RISAFloor and RISAFoundation now include support for IBC 2021!
We often get asked: “Should I model my foundation as a slab or a spread footing in RISAFoundation?” While both are valid options, they use very different analysis methods, and the results can vary accordingly. In this article, we’ll walk through a side-by-side comparison, using the same modeled conditions to highlight how the results differ — and why. Model Setup To keep things consistent, we modeled a single condition in two ways: once with a spread footing and once with a mat slab. Mat Dimensions: 10' x 10' x 1' Pedestal: 1' x 1' x 2' Loads Applied: 40 k vertical dead load 10 k lateral dead load 15 k lateral wind load 14.79 k concrete self-weight Soil Overburden: Set to 0 for both elements Slab Mesh Size: Refined below default for more detailed results Load Combinations: A basic set used for clarity (see screenshots in RISAFoundation) Analysis Methodology Feature Spread Footing Slab Element Analysis Type Rigid body Finite Element Analysis (FEA) Support Model Single support point Compression-only springs (based on subgrade modulus) Mesh Behavior No submesh Submeshed into smaller plate elements Lever Arm for Lateral Loads Spread Footings: Full pedestal height + full footing thickness Slabs: Full pedestal height…
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RISA-3D, RISAFloor and RISAFoundation now include support for IBC 2021!
With the addition of Filter Elements by Property option in RISA-3D v21, the printed reports have been improved. In previous versions, you had to filter each report section. Now you’ll find the Report spreadsheets can be filter in one location for the printed report. The Filter Elements by Property...
RISA-3D v21 now offers a modern user interface that allows users to more easily utilize the tools and features that make RISA-3D great. RISA-3D's latest interface has engineers' workflow in mind. With an updated interface to match the Windows 11 update, users will experience greater ease of use...
We are pleased to announce our latest RISA-3D release. Our teams have been working hard to add the features and functionality that our customers have requested as well fix some of the issues that have been reported. New features in this release include:
RISA is pleased to announce the release of the latest RISA-Revit Link which includes compatibility with Revit 2023. The RISA-Revit Link v23.0 allows seamless integration between RISAFloor, RISA-3D, and Autodesk Revit. This version of the link also includes updates to the round-tripping process due...
Version 20.0.2 allows users to integrate models between RISA-3D and SDS2, including model geometry, members sizes and end reactions.
RISA-3D now includes the ability to "match properties" between members. For more information about this feature, check out the video below:
ADAPT-Builder v21.0.1 includes the option to import reactions from a RISA-3D model. The program will import the superstructure reactions and loading as point and line loads. The B3D Import Wizard allows you to choose which load cases to import and gives you the ability to map the loads to existing...
RISA-3D is expanding its industry leading support for the analysis and design of various materials with the implementation of Seismic Design of Masonry Wall Panels according to the provisions of TMS 402-16 (as well as ACI 530-13). When creating a model in RISA-3D, users now have the ability to...
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