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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.
The 4th of July is a time for celebration, fireworks, and, of course, a bit of fun. For those with a knack for engineering or simply looking to engage in some creative activities, why not take on some patriotic engineering challenges? These activities are perfect for kids and adults alike, providing an entertaining way to celebrate Independence Day while sharpening your problem-solving skills. Here are three exciting challenges to get you started: 1. Popsicle Stick Bridge Materials Needed: Popsicle sticks Glue (wood glue or a hot glue gun) Small weights (coins, toy cars, etc.) Challenge: Design and build a small bridge using only popsicle sticks and glue. The goal is to create a bridge that can support as much weight as possible. This activity not only tests your creativity but also your understanding of structural integrity and load distribution. Instructions: Plan Your Design: Before you start gluing, sketch out a design for your bridge. Consider different types of bridges, such as beam, truss, or arch bridges. Build the Foundation: Begin by constructing the main supports for your bridge. Glue several popsicle sticks together side by side for a strong base. Assemble the Bridge: Connect the supports with horizontal and diagonal…
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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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