7 results found

February 15, 2022 | Tips & Tricks

P-Delta Analysis using Geometric Nonlinear Stiffness in RISA-3D

RISA-3D Version 20 now includes the Geometric Nonlinear Stiffness method for P-Delta analysis. Read More

November 13, 2019 | Tips & Tricks

Solving P-Delta Divergences in RISA-3D

In this video, you'll learn how to investigate and solve P-Delta divergence errors in your RISA-3D model. Read More

August 23, 2018 | Tips & Tricks

P-Delta Instability with Gravity Only Loads

Learn why models are receiving P-Delta instability warnings with only applied gravity loads. Read More

September 14, 2017 | Tips & Tricks

Enhanced Live Load Reduction

RISAFloor v10 includes changes to the interface that make it significantly easier to understand how live load reduction is affecting the design forces in your structure. Read More

February 23, 2012 | Tips & Tricks

How Do I Resolve a P-Delta Instability?

Investigating P-Delta instabilities in RISA-3D (or RISA-2D) can be difficult but this article includes some tips & tricks on how to determine what is causing the issue in your model. Read More

December 29, 2010 | Tips & Tricks

What is P-Delta Analysis?

When a model is loaded, it deflects. The deflections in the members of the model may induce secondary moments due to the fact that the ends of the member may no longer be vertical in the deflected Read More

October 26, 2010 | Tips & Tricks

How to Use Spreadsheets More Effectively in RISA

RISA includes various advanced spreadsheet operations that make reviewing input and results easy. Read More