
June 17, 2016
Why Do Seismic Brace Story Forces Change My Existing Code Checks?
It is possible for seismic (OCBF or SCBF) vertical braced connections to have some limit state code checks lower than those for the same non-seismic connection.
When working with RISA-3D, a structural analysis and design software, it's essential to thoroughly review your model to ensure accuracy and reliability. This checklist will guide you through the critical steps to review your RISA-3D model before analysis and design. This guide is not all encompassing for every type of model and situation and therefore are recommendations only. While this guide is not all encompassing, it is a really good start for those new to RISA-3D but also can be used to create or expand your company's review guideline/standards. Check out our guide below. Check Code Compliance: Review and confirm that the appropriate design codes and standards are selected for your project. Ensure that all code-specific settings and parameters are correctly configured, such as load factors and material properties. Units: Verify that the units used in your model match the units required for your project specifications. Check that length, force, and other units are consistent throughout the model. Application Settings: Examine machine-specific application settings and adjust them as needed for your project. Check/uncheck settings such as: Lock isolated rotational instabilities without notification. Enforce code RECOMMENDED slenderness limits (KL/r > 200, etc). Enforce code required P-Delta analysis. Section Sets Ensure that…
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It is possible for seismic (OCBF or SCBF) vertical braced connections to have some limit state code checks lower than those for the same non-seismic connection.
Vertical Diagonal Brace connections and Vertical Chevron Brace connections may be designed as Special Concentric Braced Frame (SCBF) connections in RISAConnection v6.
This webinar shows users how to design and detail brace connections including gussets to meet the AISC 341/358 Seismic Provisions.
Vertical Diagonal Brace connections and Vertical Chevron Brace connections may be designed as Ordinary Concentric Braced Frame (OCBF) connections in RISAConnection v6.
RISAConnection v6 has introduced the ability to design vertical brace connections per the seismic design provisions of the AISC 341-10 Seismic Design Manual.
The Pacific Earthquake Engineering Research center (PEER) has a large library of measured earthquake records. Below is an example of how to quickly convert one of these records into a format that can be imported into RISA.
Time history analysis solves for normal analysis results (joint displacements, member forces, code checks, etc.) based on loading that varies with time. For some analyses it may be useful to view an animation of the deflected shape of the structure as a function of time. This blog topic serves as a...
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...
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