Diaphragms

10 results found

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

October 15, 2015 | Tips & Tricks

Using RISAFloor to Design Wood Diaphragms

This video will show you how to layout wood diaphragms in RISAFloor and get the design and deflection results in the lateral model in RISA-3D. 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

November 29, 2010 | Tips & Tricks

How to Check Frame Story Shears in RISA-3D

When using rigid diaphragm analysis in RISA-3D it can be useful to evaluate the story shear in each frame. Read More

September 14, 2010 | Tips & Tricks

How to Design Flexible Diaphragms in RISAFloor

When you model your building in RISAFloor, make sure that you define your slab edge as flexible. That will ensure that the entire contents of the diaphragm will use flexible behavior. Read More