Column Splice (" 
Connection specifications " and more)
Also see :
- Column Splice for W Columns with Same Section Sizes (connection guide)
- Web Plates on Columns with Bolted Flange Splices (connection guide)
- Column Splice for W Columns with Different Section Sizes (connection guide)
- Field Welded Column Splices for Tube Columns (connection guide)
- Field Welded Splice with Bolted Channel Web Connection (connection guide)
- Field Welded Splice with Welded Channel Web Connection (connection guide)
- Column (index)
- Setup for column splice connections (index)
user defined | auto standard | column | system | top
Design restrictions for column splices :
- For bolted splice plates: Both columns must have wide flange or S shape or welded plate W material specified as the " Section size " and must also have the same " Column rotation ." Connection design creates a fill plate when the nominal depth of the upper column is at least two inches less than the nominal depth of the lower column. A " Butt plate " or " Web plates " is optional. Connection design does not create splice plates when an upper column has a greater cross-sectional area than the column below it.
- For welded splices: This type of connection can be applied to wide flange , S shape , welded plate W , welded plate box , HSS round or HSS rectangular columns. A " Butt plate " is optional.
- Channel web connections: The Column Splice Settings window determines the channel section used for channel web connections. " Connection material specs for channels " in Design Options sets the steel grade for channel web connections.
- Entering loads for column splices : Connection design attempts to synchronize the " Load " (compression) on each of the two columns being spliced so that they are the same values. If one column has an "
Auto " load and the other column has a user-entered load, the " Load " on both columns are set equal to the user-entered " Load ." If both columns have user-entered loads and those loads are not the same, the connection fails. If both columns have " Auto " loads, connection design uses the smaller of the two calculated loads. Synchronization of loads between the two spliced columns is done in a similar fashion when a " Moment " load or " Splice uplift " load or a " Horizontal shear " has been entered.
user defined | auto standard | column | system | top
------" Connection specifications " for column ' Splice plate ' connections ------
| A column's " Connection specifications " change with the selected connection type. To get this set of conn specs to show up on the Column Edit window, select ' Splice plate ' is the " Input connection type ." For ' Auto standard ' or ' User defined ' input connection types, conn specs are not on the Column Edit window, but can be found at Home > Project Settings > Job > Auto Standard Connections or User Defined Connections . |
Column attachment: All-Bolted plates or Welded or Bolted/Welded plates .
' All-Bolted plates ' instructs connection design to create flange splice plates that shop bolt to the lower column. The columns being spliced can be a flanged shape such as wide flange, S shape or welded plate W. A " Butt plate " can optionally be shop welded to the top of the column shaft being spliced.
' Welded ' specifies that the two columns be field welded. The columns can be wide flange, S shape, welded plate W, welded plate box, pipe or tube. A " Butt plate " can optionally be added. For shapes that have flanges, an "
' Bolted/Welded plates ' instructs connection design to create flange splice plates that shop weld to the lower column and field bolt to the top column. The columns being spliced can be wide flange, S shape or welded plate W. A " Butt plate " can optionally be shop welded to the top of the column shaft being spliced.
Advanced Selection: ColumnAttachmentIsBolted
Parametric module: ColumnAttachmentIsBolted
Connection design locks (' Bolted '): "
Non-bearing splice: or 
. This applies only when the Design Settings > " Connection Design Method " is ' EUROCODE 3 ' or ' EUROCODE 3 UK '.
If this box is checked (
If the box is not checked (
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If this box is checked (
If the box is not checked (
Setup: " Butt plate material grade "
Connection design locks: "
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If this box is checked (
If the box is not checked (
Advanced Selection: WebPlates
Parametric module: WebPlates
Connection design locks: "
Channel web connection: or . This " Connection specifications " option applies to flanged columns that are field ' Welded '. Flanged columns are, for example, wide flange, S shape and welded plate W columns.
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If this box is checked (
If the box is not checked (
Advanced Selection: ChannelWebConnection
Parametric module: ChannelWebConnection
Connection design locks: "
Channel lower connection: Bolted or Welded . This " Connection specifications " option applies to flanged columns when the option " Channel web connection " is turned on (checked).
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' Bolted ' instructs connection design to shop bolt the channel web connection to the lower column and field bolt to the upper column. The connection is auto detailed with the lower column.
' Welded ' specifies that the lower part of the channel web splice be shop welded to and detailed on the lower column. The upper part of the channel web connection is field bolted.
Advanced Selection: ChannelLowerConnection
Parametric module: ChannelLowerConnection
Connection design locks: "
Channel connection side: Near side or Far side or Both . This " Connection specifications " option sets the side(s) of the column web on which the channel is to be attached. The near side of a column with zero rotation is the web that faces the bottom of your computer screen in a plan view. For column shafts over 30 feet long or over 100 lbs per foot, channels are designed on both sides of the web regardless of the choice made here.
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' Near side ' fastens the channel connection to the near side web of the column.
' Far side ' fastens the channel connection to the far side web of the column.
' Both ' instructs connection design to create a channel connection on both sides of the column web.
Advanced Selection: ChannelConnectionSide
Parametric module: ChannelConnectionSide
Connection design locks: "
Splice plate grade: Auto or user-entered .
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). Choices in the list box come from Home > Project Settings > Job > Plate Grades .
Gap between upper and lower column: A distance between the upper and the lower columns being spliced. This applies to a " Non-bearing splice " only when the Design Settings > " Connection Design Method " is ' EUROCODE 3 ' or ' EUROCODE 3 UK '.
Inner flange plate: Automatic or Yes or No . This applies to column splice connections with ' All-Bolted plates '. Each column " Section size " must be a flanged shape such as wide flange. Fill plates may be designed if the upper and lower columns are different section sizes.
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' Automatic ' instructs connection design to apply the choice made at Home > Project Settings > Fabricator > Standard Fabricator Connections > Column Splice Settings > " Use inner flange plates ."
' Yes ' specifies that connection design attempt to design inner flange plates and, where necessary, fill plates for column splice connections. The length of such inner flange plates is always equal to that of the outer flange plates.
' No ' turns off the design of inner flange plates for column splice connections.
Connection design locks: "
user defined | auto standard | column | system | top