Continuous tiedown systems are used to help resist overturning forces generated by lateral loads, and can be estimated in RISA-3D using the hold-down database and the strap forces.

Learn how to model sloped roofs using RISA-3D and RISAFloor. Flexible diaphragm load atribution is explained as are the more complex wind loadings that effect sloped roofs.

RISA-3D 9.0 adds extra functionality to the load combination generator. This is available by pressing the LC Generator button when in the Load Combinations spreadsheet.

RISAFloor is capable of automatically generating the wind loads on sloped roofs. Let’s look at an example.