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September 11, 2017

Drift_calc_image

In version 15, the Drift Reporting is new and improved.  The drift definitions are now automatically created for any existing diaphragms.  For models without diaphragms, defining drift has been greatly simplified. The reported drift results have been updated as well, and are now much more relevant for today’s codes.  Drift results will report results in […]

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August 11, 2015

floor

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 this integration so one of the most common questions is: what loads are transferred when switching from RISAFloor to RISA-3D? Below is the brief […]

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October 29, 2014

wind

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 and when one cannot. AISC 14th Edition Section J10.6: The AISC 14th edition gives two sets of equations for the strength of […]

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May 15, 2012

RISA’s Automated Lateral Load Generation: What’s New in the 2010 ASCE-7 Code

RISA-3D has the capability to automatically generate seismic loads and wind loads per ASCE 7 as well as a variety of international codes.

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February 16, 2012

How to Apply Wind Loads in RISA-3D

Wind loads can be automatically are generated in RISA-3D for building models. RISA calculates the ASCE 7 Main Wind-Force Resisting System loads and calculations are based on the Analytical Procedure for Enclosed Rigid Building for All Heights.

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