End Plate Connection (" 
Connection specifications " and more)
On this page :
- Information:
- Connection specifications:
- Locks:
End plate setup :
- Standard End Plate Settings (hole spacing, plate thickness, etc.)
- Plates (setup window sets default grade by connection type)
- Preferred Flat Bar Sizes (to have flat bar end plates designed)
- Top of Steel to First Hole ( Schedule of Minimums )
- Schedule of Minimums (number of bolt rows and diameters)
- Bolt spacing (vertical spacing between rows, per bolt diameter)
- Field clearance (non-autostandard)
- Field clearance (auto standard)
- Do not round up end plate field clearances (all system-designed end plates)
Also see :
- Bolt pattern (moment option for end plates)
- Stiffener location (" Moment " option for end plates)
- Status Display ( Connection type > End plate )
user defined | auto standard | beam | system
General information about end plates :
- End plates may be applied in a full-featured SDS2 program on the end of a W or C or tube (HSS rectangular) beam under beam-to-beam or beam-to-column framing conditions. End plates may frame into a wide flange or HSS rectangular column, but not an HSS round column.
- End plates may be applied under skewed framing conditions. 45 degrees is the general limit, but the actual limit will depend on the beam size and framing condition.
- End plate connections are applied on the end of the supported beam and are detailed with (fastened to) that beam.
- End plate connections can be specified by the user of a full-featured SDS2 program as moment connections on the Beam Review window.
- In a full-featured SDS2 program , connection design creates end plates based on relevant setup information and end plate " Connection specifications ." The program will check the Preferred Flat Bar Sizes list of available bar stock material. If appropriate flat bar material is found, the program will use the flat bar and take into account the rolled edge when setting the horizontal edge distance. If no appropriate flat bar material is found, the program will design an end plate using plate material.
- For an angle , W tee or channel vertical brace framing to a beam and column, the program will design an end plate for the gusset-to-column interface if the beam connects to the column with an end plate.
user defined | auto standard | beam | system | top
------ " Connection specifications " for beam ' End plate ' ------
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" Connection specifications " are read-only in Site Planning. You can find this set of conn specs on the Beam Review window when ' End plate ' is the " Input connection type ." For ' Auto standard ' or ' User defined ' input connection types, conn specs are not on the Beam Review window, but can be found at Home > Project Settings > Job > Auto Standard Connections or User Defined Connections . |
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An end plate's gage is the center-to-center distance between its hole columns. ' Narrow ' and ' Wide ' gages are defined in setup files that are stored in your current Job. |
In a full-featured SDS2 program . . .
' Wide ' specifies that connection design create a wide gage end plate per the distance entered to Home > Project Settings > Fabricator > Standard Fabricator Connections > End Plate Settings > " Center to center holes, wide gage ."
' Narrow ' instructs connection design to create a narrow gage end plate per the distance entered to Home > Project Settings > Fabricator > Standard Fabricator Connections > End Plate Settings > " Center to center holes, narrow gage ."
Safety connection: Automatic or Non-safety or Safety-offset or Safety-notch . This " Connection specifications " option applies when two beams with end plates frame to opposite sides of a supporting column web (or a beam web). In such a framing situation, the end plates on the two beams will share bolts.
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| The wide flange column in these illustrations is in stick form ( red ) so that its flange does not cover the end plates that frame to its web. The right beam's end plate is outlined in blue . | ||||||||
In a full-featured SDS2 program . . .
' Automatic ' specifies that connection design apply the choice made to Home > Project Settings > Fabricator > Standard Fabricator Connections > End Plate Settings > " End plate safety connection ."
' Non-safety ' specifies that the two end plates be designed to share all bolts.
' Safety-offset ' instructs connection design to vertically offset the end plates with respect to one another so that one row of bolts is shared with the beam and column but not shared by the end plate of the opposing beam.
' Safety-notch ' instructs connection design to create deeper end plates to accommodate an extra row of bolts and to perform a " Cope " on each plate so that each bolt in the top row of bolts is shared by the column and a different beam. The cut to the plate is on the far side of the beam with a left end end plate. The cut is on the near side of the other beam, which will have the end plate on its right end.
Use expanded vertical bolt spacing: Automatic or Yes or No . This " Connection specifications " option applies to end plates on beams whose " Moment type " is set to ' Non-moment ' in this beam end's " Moment " leaf. The option is also available for non-monent end plates that are specified at Home > Project Settings > Job > User Defined Connections or Auto Standard Connections .
' Yes '
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' No '
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In a full-featured SDS2 program . . .
' Automatic ' specifies that connection design apply the choice made to Home > Project Settings > Fabricator > Standard Fabricator Connections > End Plate Settings > " Use expanded vertical bolt spacing ."
' Yes ' instructs connection design to expand the vertical spacing of bolts to 1.5 times or 2 times the Home > Project Settings > Fabricator > Detailing > Connection Erectability Settings > " Bolt spacing " that is set per bolt diameter. A spacing other than 1.5 or 2 times the standard bolt spacing may be used in order to accommodate piecemarking issues, loading conditions and unusual geometries.
' No ' instructs connection design to use the Home > Project Settings > Fabricator > Detailing > Connection Erectability Settings > " Bolt spacing " that is set per bolt diameter.
A possible application: When an axial load (" Tension " or " Compression ") has been entered on the end of a beam with an end plate, expanded vertical bolt spacing can promote uniform loading across the bolts.
Another application: Expanded vertical hole spacing can also help to reduce fabrication costs by minimizing the number of rows of bolts in end plates.
Extend PL to beam flanges: 
or 
. This " Connection specifications " option can apply to a ' Non-moment ' end plate on a wide flange or HSS rectangular/tube beam when an axial load (" Tension " or " Compression ") has been entered on this end of the beam. The option is also available for non-monent end plates that are specified at Home > Project Settings > Job > User Defined Connections . It does not apply to auto standard connections.
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In a full-featured SDS2 program . . .
If this box is checked (
If the box is not checked (
Extension dimension: The distance (in the primary dimension " Units " or other units ) that connection design is instructed to extend the end plate above/below the top/bottom flanges of the beam. For this to apply, the box for " Extend PL to beam flanges " must be checked ( ) here in " Connection specifications ." This option does not apply to auto standard connections.
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x = extension dimension |
Combine beam/vbr end plates: Automatic or Yes or No . For an angle , W tee or channel vertical brace framing to a beam and column, connection design creates an end plate for the gusset-to-column interface if the beam connects to the column with an end plate. This " Connection specifications " option sets whether or not the end plates can be combined into a single end plate.
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In a full-featured SDS2 program . . .
' Automatic ' specifies that connection design apply the choice made to Home > Project Settings > Fabricator > Standard Fabricator Connections > End Plate Settings > " Combine beam and vertical brace end plates ."
' Yes ' instructs connection design to create a single end plate to connect both the beam and vertical brace gusset plate to the column.
' No ' instructs connection design to create two separate end plates, one to connect the beam to the column, the other to connect the vertical brace gusset plate to the column.
Welded extended tee: or . This " Connection specifications " option can apply to a beam with an end plate connection framing perpendicular or sloping or skewed to a supporting beam. " Moment type " must be set to ' Non-moment ' in the beam's " Moment " leaf. The option is also available for non-monent end plates that are specified at Home > Project Settings > Job > User Defined Connections or Auto Standard Connections .
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In a full-featured SDS2 program . . .
If this box is checked (
If the box is not checked (
Full depth extended tee: or . This option applies when -- here in " Connection specifications " -- the box is checked for " Welded extended tee ."
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In a full-featured SDS2 program . . .
If this box is checked (
If the box is not checked (
Check supporting member for axial load: If required or For supporting column or For supporting beam or Never . The " Supporting member web stress (T) " will be reported as a " Left/Right end limit state " when a " Tension " load has been applied to the end plate. This option affects whether or not that limit state is permitted (in a full-featured SDS2 program ) to cause the end plate to fail.
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Design calculation 174 applies when a beam with an end plate and a " Tension " load frames to a column web. Load calc 174 checks supporting column web stress. |
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Design calculation 176 applies when a beam with an end plate and a " Tension " load frames to a beam web. Load calc 176 checks supporting beam web stress. |
In a full-featured SDS2 program . . .
' If required ' results in design calculations 174 and 176 being potential causes of connection failure when applicable. Design calculation 174 is applicable when the end plate on this end of the supported beam (this beam) has a " Tension " load applied to it and that end plate attaches to a supporting column's web. Calculation 176 is applicable when the end plate on this end of the beam has a " Tension " load applied to it and the end plate attaches to the supporting beam's web.
' For supporting column ' results in calculation 174 being a potential cause of connection failure in the design of the end plate on this end of the supported beam (this beam) when that end has a " Tension " load applied to it and the end plate bolts to the supporting column's web. Calculation 176 will not result in connection failure of an end plate to a beam web, though the calculation will still be done, and a for-information-only note reporting the results of the calculation will be provided, when applicable, in both design calculations reports.
' For supporting beam ' results in calculation 176 being a potential cause of connection failure in the design of the end plate on this end of the supported beam (this beam) when that end has a " Tension " load applied to it and the end plate bolts to the supporting beam's web. Calculation 174 will not result in connection failure of an end plate to a column web, though the calculation will still be done, and a for-information-only note reporting the results of the calculation will be provided, when applicable, in both design calculations reports.
' Never ' results in calculations 174 and 176 still being performed, if applicable, but not ever causing the connection to fail. In the Connection Design Calculations or Expanded Connection Design Calculations , the results of the check will be reported with a parenthetical, for-information-only note such as " (For info. only, tension force that produces local support web stress of .9Fy (176) 5.5 kips ) ."
Connection failure message: Supporting web/flg overstressed by axial load .
End plate grade: Auto or the selected material grade . This " Connection specifications " option applies to both non-moment and moment end plates.
In a full-featured SDS2 program . . .
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). Choices shown in that list box come from Home > Project Settings > Job > Plate Grades .
user defined | auto standard | beam | system | top
Connection design locks for end plates :
Connection design locks for end plate connections may appear, under a leaf with one of the below-listed names, on the Beam Review window, or on a Connection Component window. For one special situation, noted below, you can find such locks on the Vertical Brace Review window. The locks can also appear on the User Defined Connections window.
| Connection Design Locks
(" Input connection type " = ' End plate ') |
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| Leaf Name | Situation |
| End Plate
(non-moment) |
This leaf appears when " Moment type " is set to ' Non-moment '. |
| Welded Tee | Connection design can create a built-up tee for beam-to-beam framing situations instead of bolting the end plate to the supporting beam's web. |
| Safety Seat |
May be applied for non-moment end plates in beam-to-column framing situations. Under " Connection type ," the option to " Use a safety erection seat " must be checked.
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| Moment End Plate | This leaf appears for 4-bolt or 8-bolt moment end plates. |
| Moment Stiffeners
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This leaf is for 8-bolt moment end plates |
| Column Web Doublers & Column Flange Stiffeners |
.These leaves become available when the boxes for " Design for stiffeners " and " Design for doublers " are checked under " Moment " options.
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| End Plate
(vertical brace) |
For field bolting a vertical brace gusset plate to a column for a vertical brace to beam & column when the beam has an end plate. |
user defined | auto standard | beam | system | top