September 15, 2020
CD Factor for Wood Hold-Downs
If you have utilized Hold-Down's in RISA-3D, you have mostly likely noticed that a value of CD is reported for each selection in the database. However, it may not be clear how it is being used?
September 10, 2020
Understanding Node Reactions for Wall Panels
In the Node Reaction spreadsheet, all reactions from node-based boundary conditions are reported. If you look closely at some models, there may be wall panel labels in the Node Reactions spreadsheet as well. This may cause users to ask the question:”what are these reaction values for a...
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.
August 18, 2020
Determining Masonry Wall Compression Block Depth Value "a"
When determining the Depth of Compression Block value of ‘a’ in a Masonry Wall design based on the equation a = (As * fy)/(0.8 * fm * b) in a RISA-3D model, it is possible to see a small variance in the program results versus a traditional hand calculation using this typical equation. The reason...
July 21, 2020
Improving Mass Participation in RISA-3D
In structural engineering, a modal analysis uses the overall mass and stiffness of a structure to find the various periods at which the structure will naturally resonate, along with the frequencies of vibration of the structure. In RISA-3D, the modal analysis is a prerequisite to the response...
July 7, 2020
Expanded Results for Contour Plots
Color contours and gradients can be very helpful to visualize the forces/stresses of plates and wall panels. But did you know there are other design tools that can be helpful in analyzing and understanding these contours? The family of Internal Force Summation Tools (IFST, IFST Wall and IFST Slab)...
May 26, 2020
Support Frame Structures for Rotating Machinery in RISA-3D
RISA-3D can be used to model the effects of rotating machinery on their support structures. In the model below, we have a structure which is to support a piece of rotating machinery.
May 19, 2020
Why is my force demand higher than what is reported in my force…
A question that we are asked from time to time in technical support is “why is my required force higher than what is reported in my force diagrams”. For instance, in the detail report below we can see that the maximum moment about the member’s weak axis is 28.9 k-ft. However, the required weak axis...
May 7, 2020
RISA-Tekla Link v10 Released
The release of the RISA-Tekla Link v10 introduces compatibility with Tekla Structures V2020. This update of the link includes the following features as well as other enhancements: