November 19, 2015
Battered Retaining Wall Design
The batter dimensions can be set from Wall Footing Definitions:
November 3, 2015
How to Investigate the Design Strip Results in RISAFoundation
In RISAFoundation, Design Strips are used to create regions in a slab for reinforcement design. Design strip size and shape is determined by the user, see the Help- Slab- Design Strip Width topic.
October 21, 2015
Gross and Net Soil Pressures
In RISAFoundation, the Allowable Soil Bearing value is controlled by the Soil Region. This value is always taken as a Gross allowable soil pressure by default.
August 8, 2015
How do you add Shear Caps to columns?
Per the ACI, you can add a Shear Cap to your column to increase the shear strength of the slab. In RISAFloor ES two-way slabs, adding a shear cap will thicken the plates around the column automatically. The Shear Cap will affect the Punching Shear and the One-Way shear calculations. As you draw the...
March 10, 2015
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 and then applied into the diaphragm level to distribute the forces to the Lateral Resisting System.
October 21, 2014
How are Cantilevered Slabs designed?
Concrete buildings often have large cantilevers. In RISAFloor ES, the Support lines can be drawn to support points but also they can be drawn as cantilevers (shown below).
October 3, 2014
How to Model Support Lines with Parallel Walls
In RISAFloor ES, you draw a support line from support point to support point to define the Design Strips. The program will automatically create Design Strips based on the tributary width. When you have walls in the model, it is often a question of how you draw in the support lines.
January 2, 2014
Adjusting Slab Thickness in RISAFloor ES
May 17, 2012
Detailed Look at Lintel Analysis for Concrete Walls in RISA
RISA-3D now has the ability to design concrete walls with openings for both in-plane and out of plane loading. For lintels we provide analysis results based on the finite element results of the region above the opening.