November 16, 2016
Custom Column Strip Widths
RISAFloor v11 now includes the ability to create custom column strip widths in order to optimize the design of slab reinforcement.
November 16, 2016
How the Analysis Offset feature can be used to design WT Braces
In the RISA-3D when you model a WT brace it exists at the member centroid, which means that no bending ends up in the brace due to the fact that the brace is actually eccentric to the braced frame.
November 11, 2016
Adding Roof Parapets in RISAFloor
RISAFloor v11 now includes the option to add parapets and parapet loading to a building.
November 11, 2016
Project Grid Improvements
November 9, 2016
How to verify loads graphically in RISAFloor
RISAFloor does not record the applied area loads in a spreadsheet. To simplify modeling, it instead assumes a default area load over the entire diaphragm area. Additionally, you are free to apply area loads beyond the default loads. Whatever is drawn last will be considered the applied loading...
November 2, 2016
Basic Code Terms for Seismic Behavior and Why We Use Them
Seismic Forces are generated automatically using seismic parameters R, SD1, and SDS in the Seismic Load Generator when using the Director to go from RISAFloor to RISA-3D or when inserting Seismic Loads on a rigid diaphragm in RISA-3D. Additionally, Seismic Load Combinations can be generated using...
October 20, 2016
Shear Splices between Slabs
In RISAFoundation v8, you can add a shear splice between slabs so that it acts like a hinge. This is useful for modeling the effects of shear keys or dowel joints between slabs.
October 19, 2016
Instabilities in RISA-3D with Flexible Diaphragms
In a model that contains both RISAFloor and RISA-3D data it is possible to define your diaphragms as either flexible or rigid for lateral design. You can do this from the Diaphragms spreadsheet in either program:
September 7, 2016
Understanding the Slab Design Cut Results
In RISAFoundation, the user has the ability to manually draw a single Design Cut anywhere on a slab. The Design Strips also automatically include Design Cuts which are used to determine the governing design forces in the Design Strip. For more detailed information on the specifics of Design Strip...