The axial compression and flexure strength of beams and columns is dependent on the spacing of elements which provide bracing along the length of those members. You may specify unbraced lengths as a fixed distance or by using RISA’s Unbraced Length Commands. These unbraced lengths are used for...
Code requirements for consideration of panel zone shear deformation can be confusing. This blog post discusses some of the basis for these code requirements and when one can consider them to be met and when one cannot.
Concrete buildings often have large cantilevers. In RISAFloor ES, the Support lines can be drawn to support points but also they can be drawn as cantilevers (shown below).
In RISAFloor ES, you draw a support line from support point to support point to define the Design Strips. The program will automatically create Design Strips based on the tributary width. When you have walls in the model, it is often a question of how you draw in the support lines.
By default RISA-3D draws all members as line elements located at the centroid of the cross-section. However, connections between members are not always aligned with a member’s centroid. There may be horizontal or vertical offsets in the connection. To account for these you can add rigid links to...
A rigid link is a member element in RISA-3D that can be used for many advanced modeling procedures. It is so useful that it is included as one of the default member Section Sets, as you’ll see below.
The deflected shape is really helpful to understanding your model’s behavior.
RISA-3D and RISA-2D will allow you to add a moving load pattern to your model and include it in your envelope solution.
RISAFloor now has the capability to model column outriggers. This feature can be found on the Cantilevers tab within the Draw Beams dialog.
