4 results found

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

July 29, 2010 | Tips & Tricks

How to Model a Semi-Rigid Diaphragm

RISA-3D does not inherently have the capability to define a semi-rigid diaphragm. If you’re dealing with a complex roof system then you probably need to be able to model something that behaves Read More