
May 14, 2014
Trim and Extend in RISAFloor
If you've ever wondered what it’s like to be an industrial structural engineer, let me paint you a picture: Imagine juggling a dozen problems at once—steel frames, conveyor supports, pipe racks, tank foundations—all while trying to decipher a set of drawings that look like they were faxed from 1997. And, of course, every single solution is needed yesterday. But don’t worry! With the right tools (cough RISA and ADAPT cough), navigating this daily chaos becomes a lot more manageable. So, grab your coffee (black, obviously), and let’s walk through a typical day. 6:30 AM: Morning Coffee & Evaluating Additional Loads The first email of the day: “Can we add another 10,000 lbs of equipment to the mezzanine? What about seismic drift and vibration?” Instead of a lengthy hand calculation, you fire up RISAFloor and check gravity load distribution. Exporting to RISA-3D, you analyze modal frequencies and check if the additional weight will push the structure into an uncomfortable range for human occupancy. Seismic drift is next. A quick response spectrum analysis in RISA-3D confirms that the drift is still within acceptable limits. You send your report with confidence—no major framing changes required. 9:00 AM: Field Issue - Pipe Rack Base…
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Now you have the ability to add in your customized company logo to a report.
We have recently added a new View Design Properties dialog to allow you to now have the ability to easily view the wood design values prior to solution.
In RISAFloor, there are several different Load Categories that define Live Load. The IBC and the ASCE7 both have provisions that allow you to reduce the tributary area of the Live Loads. These codes have equations that adjust the Live load based on the tributary area and usage (KLL*AT). In...
You can now customize the member and nodes names Revit uses during the export to RISA. When you export your Autodesk Revit model to RISA, the member and joint names are automatically altered with “REV” listed in front. This can helpful for you to identify that the model was created in Revit,...
This video shows how to import a DXF as a drawing grid in RISAFloor. To do this, you can save any drawing file as a DXF file format and import points, lines, polylines, arcs and circles into RISAFloor. This gives you the ability to create your own drawing grids with complex geometries and use this...
The Steel Joist Institute (SJI) has recently put together a Virtual Joist Girder table which converts common joist sizes into equivalent wide flange beams. This topic describes how to use these Virtual Joist Girders within the RISAFloor program.
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.
In order to get code calculations, RISA-3D and RISA-2D need to know what type of shape would be most similar to yours. This is because the program needs to use the correct code equations for your shape type.
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