Seismic

10 results found

March 31, 2016 | Tips & Tricks

OCBF & SCBF Seismic Brace Connections now Available

RISAConnection v6 has introduced the ability to design vertical brace connections per AISC 341-10. Read More

March 10, 2016 | Tips & Tricks

Importing Recorded Seismic Ground Motions

RISA-3D allows users to import recorded seismic ground motions for use in time history analysis. Read More

November 24, 2015 | Tips & Tricks

Making a Time History Animation Video

RISA-3D allows users to view an animation of the deflected shape of the structure as a function of time. Read More

August 25, 2015 | Tips & Tricks

What does the Include Structure Weight Checkbox Do for Seismic Loads?

This checkbox gives the option of including the seismic weight that is tributary to the ground to the first floor. For example, let’s look at the elevation of a building frame with diaphragms Read More

August 11, 2015 | Tips & Tricks

What Loads Transfer from RISAFloor to RISA-3D?

RISAFloor 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 thi Read More

July 14, 2015 | Tips & Tricks

How to Import a Seismic Moment Connection into RISAConnection

Seismic connections can now be defined in RISA-3D or RISAFloor and transferred to RISAConnection for design. Read More

October 29, 2014 | Tips & Tricks

Code Requirements for Panel Zone Shear Deformation

Code requirements for consideration of panel zone shear deformation can be confusing. This blog post discusses some of the basis for these code requirements and when one can consider them to be met Read More

April 3, 2012 | Tips & Tricks

Why Don’t My Response Spectra Reactions Satisfy Statics?

The applied loads in a response spectrum analysis (RSA) are the applied masses times the accelerations in the response spectra. Each mode of vibration produces its own set of joint reactions. Read More

April 13, 2011 | Tips & Tricks

How Do I Change the Member Type in RISA-3D?

In RISA-3D, there are many different applications that require you to define Member Type in your model including AISC 15th Edition steel design, Seismic Design and Concrete design. Read More

April 6, 2011 | Tips & Tricks

What are the Unbalanced Forces on Beams?

The detailed report in RISA-3D has the ability to show unbalanced seismic forces in both beams and braces according to AISC 341. Read More