October 2, 2018
Wood Design per AWC NDS 2018 Wood Code
The new AWC NDS 2018 code has been implemented into RISA-3D v17.0 and RISAFloor v13.0. To select this code for your design, simply choose this code from the Codes tab within Model Settings.
September 28, 2018
Analysis Offsets now Available
RISA-3D v15 includes "analysis offsets" which moves the centroid of the member for analysis allowing for flexibility in how members are designed. Let's use a WT brace to demonstrate how this feature can be utilized. When you model a WT brace it exists at the member centroid, which means that no...
September 27, 2018
Challenges when using Analysis Offsets
In a previous article we discussed how the Analysis Offsets feature in RISA-3D works and how it can be used to model members at top of steel. In this article, we will discuss some specific situations and how the results change with the analysis offset set as top of member (local -y axis).
September 27, 2018
Using Analysis Offsets in RISA-3D
Have you ever wondered what the Analysis Offset feature does? Let’s take a look at how this feature can be used to model members at top of steel.
September 13, 2018
Steel Design per AISC 15th Edition Steel Manual now Available
The new AISC 360-16 15th Edition changes have been implemented into RISA-3D v17.0 and RISAFloor v13.0.
August 23, 2018
P-Delta Instability with Gravity Only Loads
“Why am I receiving a P-Delta instability error when I run my DL + LL load combination? I don’t see this error when I run my lateral load only combination.”
August 16, 2018
Modeling Cables in RISA-3D
One of the support questions we get most often is, “How can I model a cable element in RISA-3D?” Cables that are straight and experience only axial loading can be easily modeled. When modeling structures with cables (such as guyed structures) the cables can be modeled as tension only and doing so...
August 2, 2018
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.
July 19, 2018
Designing Multi-Material Models for ASD & LRFD with one solution
RISA-3D includes material specific checkboxes on the Design tab of the Load Combinations spreadsheet that allow you to define the load combinations that shall be checked for members of different materials.