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Column Reinf Plate " connection design locks
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An HSS/TS column reinforcement plate can be designed per " |
or 
) the design of a reinforcement plate for a shear plate or veritcal brace. Column reinforcment for a welded moment connection is always designed on an as-needed basis.
- " Plate length " is measured parallel with the supporting column's workline.
- If reinforcement plates are not designed, but are needed, the connection fails.
- For beam connections, the failure message is " Slender col wall - not valid for a shear tab conn ."
- For vertical brace connections, the failure message is " HSS wall strength fails ."
- Connection Guide : Click here (non-moment shear plate) and here (welded moment).
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" Column Reinf Plate "
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User Defined Connections: Settings that are locked (
) in a user defined connection file will automatically be locked on a member edit window for which that file is the " Input connection type ." You can, if you so choose, manually lock additional settings on the member edit window, and your changes will be retained, through multiple processes, so long as you do not change to a different connection then switch back to the original user defined connection.
Beam Edit: To change a setting, first set it to locked (
) may be updated, and the "
user defined | beam edit | top
Connection design locks :
| Locks not dimensioned or called out on the drawing are marked ( not depicted ). |
Column Reinf Plate
Top of plate: a positive or negative distance .
For a welded moment connection, this is the positive distance that the top of the plate projects above the top flange of the beam. Increasing this distance moves the top edge of the reinforcement plate up. The " Top of plate " minimum distance allowed is 0.75 inch.
For a non-moment shear plate, this is also the distance from the top flange of the beam. By default, this distance will be negative, thus placing the top of the reinforcement plate below the top flange of the beam. The default positions the top of the reinforcement plate 0.75 inch above the top edge of the shear plate. When you change the " Plate length " for such a connection, the " Top of plate " (if unlocked) will adjust to keep the reinforcement plate centered vortically with respect to the shear plate.
For a vertical brace, this is the positive distance that the plate projects beyond the end of the gusset plate that the vertical brace points to. If the vertical brace points downward, entering a larger distance moves the bottom of the plate down. If the vertical brace points upward, entering a larger distance moves the top of the plate up. The edge of the reinforcement plate must be at least 0.75 inch from the edge of the gusset plate.
When making an entry to " Top of plate ," you should keep the " Plate length " unlocked (
End connection failure message: HSS reinf plate projects beyond the top of column (beam)
End connection failure message: Locked HSS reinf plate top of plate interferes (beam)
End connection failure message: Locked HSS reinf plate top of plate interferes (vertical brace)
Plate length ( length ): The length of either the left or right vertical edge of the reinforcement plate. See the example .
For a welded moment connection or vertical brace gusset plate, if you add length to the reinforcement plate, the " Top of plate " distance is maintained, and the extra length is added to the edge that is opposite to the top-of-plate edge.
For a non-moment shear plate, any length you enter evenly repositions both the top and bottom edges of the plate. For example, if you add an inch to the length, the top edge of the plate will move up half an inch and the bottom edge of the plate will move down half an inch. For this reason, you should always keep the " Top of plate " unlocked (
End connection failure message: Locked HSS reinf plate length is less than required (beam)
End connection failure message: Locked HSS reinf plate length is less than required (vertical brace)
Plate width ( width ): The length of either the top or bottom edge of the reinforcement plate. The " Plate width " is centered on the face of the column. See the example .
End connection failure message: Locked HSS reinf plate width doesn't fit (beam)
End connection failure message: Locked HSS reinf plate width doesn't fit (vertical brace)
Plate thickness ( not depicted ): The " Material thickness " of the reinforcement plate. See the example .
For a reinforcement plate with no locked values, " Plate length " and " Weld size " depend on the governing load. For a welded moment connection, this means that increasing the beam's " Moment load " may increase the plate thickness and weld size of the reinforcement plate. The " Plate thickness " should always be equal to or greater than the " Weld size ."
Weld size ( weld ): The weld size for shop welding the four edges of the reinforcement plate to the HSS rectangular or TS column. See the example .
For a reinforcement plate with no locked values, " Weld size " and " Plate length " are dependent on the governing load. For a non-moment single-plate shear connection, this means that increasing the beam's " Shear load " may increase the plate thickness and weld size of the reinforcement plate. The " Weld size " should always be equal to or smaller than the " Plate thickness ."
End connection failure message: HSS reinf plate weld size greater than maximum allowed (beam)
End connection failure message: HSS reinf plate weld size greater than maximum allowed (vertical brace)
user defined | beam edit | top