October 13, 2021

Defining Connections: Column to Beam Connections

By: RISA

Member Configuration

The connection rule must be applied at the end of the beam (not the column).

Available Shear Connection Types

The following Column Shear Connections are currently supported in RISAConnection:

Single Clip Angle Shear Connection
Double Clip Angle Shear Connection
Shear Tab Shear Connection
End Plate Shear Connection
Double Clip Angle (Double Sided) Shear Connection

Available Moment Connection Types

The following Column Moment Connections are currently supported in RISAConnection:

Flange Plate Moment Connection
Direct Weld Moment Connection
Extended End Plate Moment Connection
Partially Extended End Plate Moment Connection
Flush End Plate Moment Connection

Specific Connection Requirements

Columns may be Wide Flanges, HSS tubes or HSS pipes (shear tab only)
Beams for shear connections may be Wide Flanges, Tapered Wide Flanges or Channels (except for end plate shear)
Beams for moment connections must be Wide Flanges.
Double-sided connections available for clip angle shear connections into the Wide Flange column web. Beams on either side of the web must be within 3" (parallel) to be considered as double-sided.
Skewed shear tab connection available for Wide Flange or HSS tube column (maximum beam skew angle is 45 degrees)
Flange Plate Column Cap Plate Moment Connection only available in RISAConnection

Individual Shear Connections

Column bm two sided double clip angle shear

Individual Moment Connections

To learn more about the process of defining connections in RISA-3D or to review information about other connection types, check out the main article in this series (link below):

Tags: RISA-3D, Shear Connections, New, RISAConnection, How to Define Steel Connections in RISAFloor & RIS, Steel Connections

September 7, 2021 | RISA-3D, Shear Connections, New, RISAConnection, How to Define Steel Connections in RISAFloor & RIS, Steel Connections

Defining Connections: Beam to Girder Connections

Member Configuration The connection rule must be applied at the end of the beam (not the continuous girder). Available Connection Types Beam Shear Connections Only: (Shear tab, Clip angle, End plate) Single Clip Angle (One Side) Shear Connection Double Clip Angle (One Side) Shear Connection Double Clip Angle (Two-Sided) Shear Connection End Plate Shear Connection Shear Tab Shear Connection Specific Connection Requirements Girders may only be Wide Flanges. Beams may be Wide Flanges. Tapered Wide Flanges or Channels (except for end plate shear) Double-sided connections available for clip angle shear connections into the girder web. Skewed connections available for Shear Tab (maximum beam skew angle is 45 degrees) Individual Connections To learn more about the process of defining connections in RISA-3D or to review information about other connection types, check out the main article in this series (link below): Related Articles:…

September 7, 2021 | RISA-3D, New, RISAConnection, Steel Connections, Defining Connections: Beam and Column Splices Conn, Defining Connections: Column to Beam Connections, Defining Connections: Beam to Girder Connections, Integration

How to Define Steel Connections in RISAFloor & RISA-3D

One of the advantages of the RISA Building System is the ability to utilize and share model information (geometry, loading, etc.) between software packages. One such way, is the ability to define hot-rolled steel connections in RISAFloor and/or RISA-3D and then transfer them to RISAConnection for design. Once a model is created in RISAFloor/RISA-3D, users can assign connections and then transfer the connection to RISAConnection. During this process, the software will test whether the connection is valid based on the defined "Connection Rules". The proper definition of these "Connection Rules" is where many questions arise and understanding how this process will make steel connection design using RISA software a seamless process. Typical Workflow Users must define desired "Connection Rules" in the spreadsheet. Once the "Connection Rules" are defined, the rules can be assigned to the appropriate member ends in the model. Use the Member Ends > Connection Rules button located on the "Quick View" toolbar to view the assigned connection rules (color coded) directly on the model. You can also use the Member Label > Connection Rules button to graphically display the connection name. For specific information on assigning each of RISAConnection's eleven (11) available connection types, please review the…

May 29, 2020 | Shear Connections, New, Steel, RISAConnection

Skewed Shear Connections are Now Available in RISAConnection v12!

RISAConnection Version 12 now supports skewed shear tab connections. With this enhancement, engineers have the option to skew a wide flange, a tapered wide flange or a channel beam with the following supporting members: Wide Flange Column Tapered Wide Flange Column Tube Column Wide Flange Girder To do this, a new Beam Skew option has been added under the Connection Category in the Connection Properties panel. Beams may be skewed left or right in the horizontal plane. Once a skew direction has been selected, you may specify the angle of the skew. The skew angle can be set between 0 and 45 degrees in RISAConnection and will be designed per AISC guidelines. When specifying a skewed connection, additional 2D views become available allowing users to review the connection layout from a top view. Another important consideration when designing skewed connections is the size of the fillet welds. As the skew angle of the beam becomes more acute, two different weld sizes (on either side of the plate) may need to be specified in order to maintain the required capacity. You can modify the fillet weld sizes in the Column or Girder Weld section of the Connection Properties. The program will…