December 16, 2015
Concrete Design per ACI 318-14 Concrete Code now Available
The new ACI 318-14 code has been implemented into RISA-3D v14, RISAFloor v10, and RISAFoundation v8.
RISAFloor has four different deck types: concrete, composite, metal, and wood. When it comes to composite decks, there is a predefined Composite Deck definition already setup in the Deck Definitions spreadsheet. You can also specify a composite deck by (1) setting up your deck configuration using the existing options or (2) adding your composite deck into the RISAFloor deck database. In this article, review the steps outlined below for Option (2): editing your RISAFloor deck database. For Option (1), see our other support article in the link for those steps. Add or Modify the RISAFloor Deck Database: The composite decks in the program are all based on spreadsheet data. Navigate to this database folder in C:\RISA User Data\%username\Decks. Inside this folder, you will see all the deck manufacturers and deck types. Find the deck type spreadsheet for which you want to add the deck, and then open it up in Excel. You can modify or add a row into the spreadsheet with the custom deck properties. Make sure all the fields are properly filled in to order avoid error messages later. Applying a Custom Deck in RISAFloor To apply your custom deck properties, close and reopen RISAFloor. Open the Deck…
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The new ACI 318-14 code has been implemented into RISA-3D v14, RISAFloor v10, and RISAFoundation v8.
RISAFloor is a design program in which it takes basic shape criteria about your beam or column members and then selects an optimal size to meet strength and serviceability criteria. However, the program can just as easily perform a design check for an as-built condition by defining specific member...
Have you been in RISAFloor performing a steel product design and noticed an (SP) extension to a joist designation? The following will discuss when the program designs for these special loading conditions.
You may notice discrepancies in the wood design values when comparing RISA with the NDS 2012 and older versions of the code. The American Wood Council updated the wood design values in the Addendum, which supersede the values used in the NDS 2012 and previous versions of the Design Values for Wood...
The beams in a lateral force resisting system, such as a braced frame or moment frame, typically carry a significant axial force. In the example below (with no diaphragms) the beam (M4) carries a significant axial tension.
Revit offers two options for setting the elevation of beams. The way these are used has a significant impact on how those members are round tripped to RISAFloor, so it is important for you to use them correctly. The Level Offsets are available at each end of the beam. They can be modified through...
In the Seismic Loads dialog there is a checkbox for “Include structure weight in base shear”.
RIAFloor designs the gravity system and then integrates with RISA-3D to design the lateral system. Only the lateral members are taken from RISAFloor over to RISA-3D. The loading is automated in this integration so one of the most common questions is: what loads are transferred when switching from...
There are multiple options in RISA-3D and RISAFloor to create a custom shape not available in the program databases. The first, is to utilize RISASection in order to create cross-sections, calculate section properties and import the shape directly into RISA-3D. For more information on integrating...
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