September 12, 2017

Added Double Click Dialog for Members

RISAFloor now has the ability to double-click a member to open the Member Information dialog. This feature has been in RISA-3D but now it is available in RISAFloor. Double click any member in your model and the Member dialog box opens. It has three tabs: General, Properties and Design.

All the same information is in the Members spreadsheet but now you can quickly access the member properties for a single member using the double-click feature.

Tags: RISAFloor ES, RISAFloor, Properties, New

August 2, 2018 | RISA-3D, RISAFloor, Concrete, Load Combinations, RISAFoundation, New, Analysis

Governing Load Combinations for Shear in Concrete Columns

For concrete column members, the load combination producing the maximum shear code check is reported in the Detail Report and corresponding Results spreadsheet. Since concrete is evaluated based on a batch solution, this can be useful when shear governs the design. RISAFloor Concrete tab of the Column Results spreadsheet: Column Detail Report: RISA-3D Concrete Columns tab of the Design Results spreadsheet: Column Detail Report: Shear is checked in both the local y- and z- directions, so the reported load combination in RISA-3D and RISAFloor might not necessarily correspond with the highest applied shear force. This is because the shear capacity can differ in each direction based on the geometry of the column. RISAFoundation For pedestals in RISAFoundation, the load combination producing the governing shear check can be found for both pedestals drawn as part of a slab element and pedestals that are designed as part of a footing support type. Pedestals Design Values tab of the Pedestals/Posts Design Values spreadsheet: In addition, the pedestal detail report will show the governing load combination for the shear check in each direction. In addition, the pedestal detail report will show the governing load combination for the shear check in each direction. The governing…

December 9, 2015 | RISA-3D, Results, New, Reporting, Analysis

Envelope Detail Report Results

RISA-3D v14 introduced envelope detail reports for all material members. This means that you can see the enveloped solution (force diagrams and governing code check values) in the detail report for each member when you solve either an Envelope or Batch + Envelope solution type. This is available for the following material types: Hot Rolled Steel Cold Formed Steel Concrete Aluminum Wood General If you have solved a Batch + Envelope solution, you can scroll through the individual load combination results and the Envelope results using the drop down menu on the upper left of the detail report. When you open an enveloped detail report, you will see enveloped force diagrams and the governing load combination reported for each code check. You can click on any force diagram to open the interactive force diagram which also shows the enveloped values…

August 17, 2016 | RISA-3D, New, Warping, Torsion

How Does RISA-3D Account for Torsional Warping?

Twisting of a member or frame induces torsional forces and stresses. This is included in the RISA-3D analysis as long as you have the Torsional Warping checkbox selected on the Solution tab of (Global) Model Settings. The primary reference used in the development of RISA-3D’s torsional calculations was the AISC Design Guide #9, Torsional Analysis of Structural Steel Members. It is important to remember that RISA-3D models warping members using CASE 2 only. As shown in the Torsion reference, CASE 2 represents the torsionally fixed and warping fixed end conditions for the member. Thus, a member would be then subjected to an equal and opposite point torque at the end of the member. Note: RISA’s calculation of torsion stresses is good for capturing the torsion due to racking of the structure, not point or line torques on an individual member. That type of check is not supported. Stress Results RISA-3D calculates and lists the torsional stresses for the members of the structure, including the warping stresses. These are reported in the Member Torsion spreadsheet. For warping shapes (I’s and C’s), three separate stresses are calculated: pure torsion shear, warping shear and warping normal (bending) stresses. Code Check Results These torsional…