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Document Type: FAQ Product(s): RAM Structural System Version(s): Any Original Author: Bentley Technical Support Group
Document Type: FAQ
Product(s): RAM Structural System
Version(s): Any
Original Author: Bentley Technical Support Group
No, the program only applies the total horizontal force for each story or diaphragm. Uplift loads are not yet considered.
While there is no good work around for this limitation some users apply negative magnitude Live Loads in order to check the beams (or foundations) for uplift. It's important to note that the program still sees this as a Live load and factors it accordingly, so some adjustments in the magnitude of the applied load or customization of the load combinations might be required.
The program currently applies the wind loads based on the simple rectangular area of the structure defined by the story data. Adjustments in the column and wall elevations do not affect the total applied wind loads at this time.
Use the Report - Exposure Boundaries to see a visualization of the exposed wind surfaces whenever there is some concern over the height or tributary width being used to calculate total story forces.
No, when the program generates wind loads it always assumes the structure is fully clad all the way down to the ground level with one complete windward and leeward surface.
For any other condition where rigid diaphragms exist, "User defined story forces" should be used (these are defined in RAM Frame under loads - load cases). When there is no rigid diaphragm use "Nodal loads" (defined in the Modeler in the Elevation view). The program generated wind loads are not completely accurate for any of the following situations:
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