October 4, 2012
Using Virtual Joist Girders in RISA-3D
The Steel Joist Institute (SJI) has developed a Virtual Joist Girder table which converts common joist sizes into equivalent wide flange beams for use in RISA-3D.
September 13, 2012
How Can I Use a Wall for Shear Only (no Bearing) in RISA-3D?
Let’s consider the example of the frame shown below. Suppose there is a diaphragm present at the framing level, and that the wall shown is intended only to handle the lateral loads. In reality the columns will be in-line with the wall, and the cantilever beams will pass over the wall without...
September 6, 2012
How to Install a RISA Program on a Mac
RISA programs are Windows based and have historically been installed only on PC’s. Although RISA programs do not run natively on an Apple computer we have done some testing to confirm that our programs will run on a Mac using a virtual computer running a Microsoft Windows OS.
August 31, 2012
How to Model Multiple Pedestals/Loads on One Footing
RISAFoundation includes a footing element which is represented by a single node. A frequent question that arises is how to apply multiple point loads to a single footing, but at different locations. This can be done with or without corresponding pedestals, but for the example below multiple...
August 9, 2012
How to Model a Column within a Wall in RISA-3D
While RISA-3D does not currently have pilaster design, there are still plenty of situations where you would want to have a column embedded within a wall. The idea behind this is that the column handles the gravity loads for any beams which frame into it, while the wall handles lateral loads. No...
July 12, 2012
How to Add a Deck to a RISAFloor Model
RISAFloor has some default decks provided for you when you open the program in the Deck Definitions spreadsheet. You can use one of these decks or you can create your own by going to the bottom of the spreadsheet and press ENTER.
June 7, 2012
How to Apply Hydrostatic Loads to Circular Tanks in RISA-3D
RISA-3D v10 now has the ability to quickly and easily apply hydrostatic loads to circular tanks using the Cylinder Generator. This generator can be found by clicking the Templates button and choosing the Cylinder - Plates/Members option.
June 5, 2012
How to Account for Axial Loads in your RISAConnection Designs
With the new RISAConnection version 2.0, users now have the ability to design all connections for axial forces as well as the shear and moment forces.
May 17, 2012
Detailed Look at Lintel Analysis for Concrete Walls in RISA
RISA-3D now has the ability to design concrete walls with openings for both in-plane and out of plane loading. For lintels we provide analysis results based on the finite element results of the region above the opening.