10 results found

February 26, 2021 | Tips & Tricks

Video: Using Various Diaphragm Types in RISAFloor

Watch this video to learn how to use various diaphragm types in the same RISAFloor model. Read More

December 11, 2020 | Tips & Tricks

Accidental Torsion for Semi-Rigid Diaphragms in RISAFloor

The latest releases of RISAFloor (Version 15.0.1) and RISA-3D (Version 19.0.1) include consideration for accidental torsion and eccentric loading for semi-rigid diaphragms. Read More

April 23, 2020 | Tips & Tricks

How Do Flexible Diaphragms Work on Sloped Roofs?

This article will show you how to define a flexible diaphragm on a sloped roof. The user has the option to consider a Ceiling Diaphragm for the load attribution, or they may choose not to consider a Read More

June 20, 2019 | Tips & Tricks

Understanding Wall Panel Forces with Rigid Diaphragms

Rigid diaphragms represent a plane of very high rigidity and distribute load to elements which connect to them solely based on the stiffness of the elements. Read More

January 17, 2019 | Tips & Tricks

RISAFloor & RISA-3D: Two Buildings on the Same Podium

With RISAFloor and RISA-3D it is possible to create a structure with two buildings supported on the same podium. Read More

April 12, 2017 | Tips & Tricks

Semi-Rigid Diaphragms now Available

RISAFloor v11 now has the ability to model a Semi-Rigid, Rigid or Flexible diaphragms to distribute lateral loads. Read More

April 15, 2015 | Tips & Tricks

How Do I Detach a Wall Panel From a Diaphragm?

This feature is useful if you have a rigid diaphragm defined in the program but have a portion of the structure that is not a part of that rigid diaphragm. This is common for balloon framed walls or Read More

March 10, 2015 | Tips & Tricks

What is a Semi-Rigid Diaphragm?

RISAFloor Concrete Floor Slabs can design be transferred into RISA-3D for lateral design using either a Rigid Diaphragm or Semi-Rigid diaphragm. In RISA-3D, the wind and seismic loads are calculated Read More

September 13, 2012 | Tips & Tricks

How Can I Use a Wall for Shear Only (no Bearing) in RISA-3D?

Let’s consider the example of the frame shown below. Suppose there is a diaphragm present at the framing level, and that the wall shown is intended only to handle the lateral loads. Read More

February 13, 2012 | Tips & Tricks

How to Apply a Rigid Diaphragm in RISA-3D

In RISA-3D, rigid Diaphragms can be added using the Diaphragm spreadsheet. Just enter the node label and then choose the horizontal plane. Read More