Column Connection Failure Messages

Introduction :

Messages in alphabetical order :

B C E F G H I L M N
P S U              

page 1 | contents | failure messages | column review window


Where/when/why these error messages appear :

When you open a Column Review window after connection design has failed an " Input connection type " connection on the top or bottom end of the column, you will find a connection design error message such the following:

 Invalid material type for this member

The message is displayed on the left half of the Column Review window if it applies to the connection on the bottom end of the column. The message tells you why connection design failed the connection. Understanding the message can help you to determine what steps the user of a full-featured SDS2 program needs to take in order to create the connection you want.

page 1 | contents | failure messages | column review window | top


Warning 1: Users of a full-featured SDS2 program should enter loads (" Load ," " Moment ," " Uplift ," etc.) only under the authority of a qualified engineer. An improperly set load can result in design changes that are structurally unsound. Lowering the load may get you a connection, but it could result in a connection failure under the true loading conditions in the built structure.

Warning 2: Users of a full-featured SDS2 program should make design changes (such as changing the column " Section size " or " Steel grade ") only under the authority of a qualified structural designer. Making such design changes may involve extra cost, clearance problems, delays, etc. For many projects, materials may have already been ordered at the time connections are being designed.

Warning 3: Creating graphical connections is another method that users of a full-featured SDS2 program can always use to get around connection failures. Make sure that each graphical connection is approved by a qualified designer before its drawing is sent to the fabrication shop.

Warning 4: Fixing connection failures in a full-featured SDS2 program may, in some cases, involve making changes to Job/Fabricator setup options. Caution should be exercised when making any setup change since such changes will be automatically applied to newly added members and, for members that already exist in the model, the user needs to manually select (mark for processing) those members that the user wants connection design to update with the setup changes.

Warning 5: Just because connection design passes a connection without a failure message, you should not assume that the connection is optimal. All connections should be visually inspected in the model. In addition, the Connection Design Calculations or Expanded Connection Design Calculations report should be reviewed by a qualified engineer.

page 1 | contents | failure messages | column review window | top


- B -

Base/cap plate connection not centered on beam: You get this message when connection design fails an auto base cap/plate because the workline of a perfectly vertical or sloping column is not centered on the beam flange.

If the column is perfectly vertical, the user of a full-featured SDS2 program may be able to fix the problem by setting the " Beam rotation " to ' 0 '.

For a sloping column, if the work lines of the beam and sloping column are in alignment, the slope of the column does not matter -- connection design will be able to generate an auto base/cap plate. However, if the column end opposite to the auto base/cap plate is offset away from the near side or far side of the beam, the user may get this connection failure message.

For a sloping column under a beam where the column's top work point is to the workline of the beam (the beam's top flange), the user may be able fix this problem by lowering the " End elevation " of the column by the depth of the beam so that the work point goes to the bottom flange of the beam.

For other situations, the user may need to delete the column then re-add it so that its work point goes to the center of the top/bottom flange of the beam.

If the user still can't get a connection, change the " Input connection type " to a ' User base/cap plate '.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Beam web must be vertical at conn. to column: This connection failure message indicates a geometry problem that makes it impossible to design an auto base cap/plate on a column to a beam.

To fix this problem, try changing the " Web rotation " of the beam to ' Web vertical '.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Bolts must be on beam flange with valid edge dist: This connection failure message applies to a column with an auto base/cap plate or user base/cap plate to a narrow beam flange when " Use extended stiffeners " (user base/cap plate) or " Use extended stiffeners " (auto base/cap plate) has been specified.

The routines that design flange extension plates do a check to ensure that a column plate does not bolt to the extension plates. This message is generated when the auto base cap/plate or user base/cap plate fails that check.

To clear the failure message and get a connection on an auto base/cap plate, a user of a full-featured SDS2 program could enter a smaller " Vertical gage " (left bolts) or " Vertical gage " (right bolts) to the " Column Plate " leaf so that the plate bolts only to the beam flange. A similar fix would be required for a user base/cap plate. User base/cap plate locks are also contained in a leaf named " Column Plate ."

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Bolt shear strength exceeded: This connection failure message can apply when the column " Input connection type " is ' Splice plate ' and the " Column attachment " is ' All-Bolted plates '. The message may be generated for any " Connection design method ."

The connection failure message may be generated on the Column Review window due to a value that the user of a full-featured SDS2 program has entered to locked ( ) fields in any leaf that contains connection design locks related to hole patterns and bolts.

Assuming that the column's " Load " is to engineering specifications, generally the best way for that user to clear this failure message is to unlock ( ) the offending locked fields or, alternatively, to adjust the entries made to those locked fields.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Butt plate is thicker than 4 inches: You get this message when, in order to meet calculated loading conditions for a column splice plate connection, connection design requires a butt plate thicker than 4 inches.

Possible ways to get a splice plate with a butt plate with a thickness less than or equal to 4 inches are to lower the " Load ," thus causing the system to design a weaker connection, or to specify a stronger " Section size ," or a " Steel grade " with higher yield strength.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- C -

Cannot complete connection design: This applies to many different situations.

The user of a full-featured SDS2 program should probably review the 3D model in order to assess the framing situation and determine what might be the problem.

Also, the user may want to review the Connection Design Calculations Report or Expanded Connection Design Calculations Report .

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Cannot have a moment web setback with both flanges coped: This connection failure message indicates that both the " Top flange operation " and the " Bottom flange operation " on the same member end are cope operations and a non-zero " Moment connection web setback " has been set. Various cope operations may be specified under the " End preparations " leaf on a member review window.

' Cope plain '
' Cope shop weld #3 (Standard) '
' Cope field weld #3 (Standard) '
' Cope field weld #1 (FEMA) '
' Cope shop weld #1 (FEMA) '
' Seismic cope field weld '
' Seismic cope shop weld '
cope operations

To clear this failure message, the user of a full-featured SDS2 program can clear the cope operation on either the top flange or the bottom flange or enter ' 0 ' to " Moment connection web setback " or unlock ( ) that field. The user can clear a cope operation and keep the weld preparation by entering ' 0 ' as the " Cope length " and ' 0 ' as the " Cope depth ."

If this failure message is not cleared, the program still copes the top and bottom flanges. However, the " Moment connection web setback " that has been entered is not applied. That entry is shown on the member window, accompanied by this failure message as an indication that the entered value has not been applied. On the Rolled Section Material window, the " Moment connection web setback " is ' 0 ' since zero is the actual, applied value.

Cannot have a moment web setback without a cope weld end operation: This failure message applies to all member types that have a valid " Section size " to which the user of a full-featured SDS2 program can apply a cope weld end operation.

' Cope shop weld #3 (Standard) '
' Cope field weld #3 (Standard) '
' Cope field weld #1 (FEMA) '
' Cope shop weld #1 (FEMA) '
' Seismic cope field weld '
' Seismic cope shop weld '
cope weld operations

To clear this failure message, the user of a full-featured SDS2 program needs to enter ' 0 ' to " Moment connection web setback " or unlock ( ) that field or apply one of the above-listed cope weld end operations as the " Top/bottom flange operation ."

If this failure message is not cleared, the " Top/bottom flange operation " is still applied. The entry made to " Moment connection web setback " is shown on the member review window, accompanied by this failure message as an indication that the entered value has not been applied. On the Rolled Section Material window, the " Moment connection web setback " is ' 0 ' since zero is the actual, applied value.

Columns have unequal plan rotations: You get this message when ' Splice plate ' is the " Input connection type " on this column, and connection design has determined that the columns being spliced have different rotations.

To get an " Input connection type " connection, the user of a full-featured SDS2 program needs to change the " Column rotation " on one or both of the columns.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Connection geometry fails due to locked plate/angle length: This connection failure message applies to the set of auto base/cap plate locks named " Column Plate ."

The message indicates that the user of a full-featured SDS2 program has entered a " Length left " or " Length right " distance that conflicts with other locks in the same set of connection design locks. For example, the " Length left " can conflict with the number of bolt " Rows " (left) or etc. To clear this failure message, the user of that program should either adjust those other settings, or unlock ( ) the " Length left " and/or " Length right " to allow the program to automatically enter the calculated plate length.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Connection geometry fails due to locked plate/angle width: This connection failure message applies to " Plate width " in the set of auto base/cap plate locks named " Column Plate ."

The message indicates that the user of a full-featured SDS2 program has entered a " Plate width " distance that conflicts with other locks in the same leaf. For example, the " Plate width " can conflict with the number of bolt " Columns " or the " Vertical gage " or etc. To clear this failure message, the user either needs to adjust those other settings, or to unlock ( ) the " Plate width " and thus allow the program to automatically enter the calculated plate width that is needed to accommodate those other settings.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Cope depth is less than minimum allowed: This failure message applies when, under the " End preparations " leaf on a member window, a user of a full-featured SDS2 program has entered a " Cope depth " that is less than the minimum allowed. A " Cope depth " can be entered for any of the following " Top/bottom flange operations :"

' Cope plain '
' Cope shop weld #3 (Standard) '
' Cope field weld #3 (Standard) '
' Cope field weld #1 (FEMA) '
' Cope shop weld #1 (FEMA) '
' Seismic cope field weld '
' Seismic cope shop weld '
cope operations

The program calculates the minimum cope depth based on the flange thickness of the " Section size " of the member, using in the following formula: r + tf + 0.01 inch = mcd .

mcd = minimum cope depth
tf = flange thickness
r = cope radius

To clear this failure message, the user of the full-featured SDS2 program needs to enter a " Cope depth " that is larger than the calculated minimum ( mcd ) or unlock ( ) the " Cope depth " field so that the program enters the calculated minimum.

page 1 | contents | failure messages | column review window | top


- E -

End operation will not work with this situation: This connection failure message indicates that the " Top flange operation " or " Bottom flange operation " under " End preparations " on the member window will not work. This is a catch-all failure message. In the table below, situations that produce this failure message are marked ? or fail .

OK = end operation is applicable to the material type
fail = end operation will not work for this situation
? = operation works on the flange, not the stem
288 = failure message number 288
  W , S C L tube   pipe   WT
Cope plain OK OK OK OK OK OK
Cope field #3 OK OK ? fail fail ?
Cope shop #3 OK OK ? fail fail ?
Cut flange width OK 288 288 fail fail fail
Cut flange flush OK 288 288 fail fail fail
Clip flange OK fail fail fail fail fail
Notch top/bottom fail fail fail OK OK fail
Notch NS/FS fail fail fail OK OK fail
Cope field #1 OK OK ? fail fail ?
Cope shop #1 OK OK ? fail fail ?
Clip web OK OK OK fail fail OK
Cope field seismic OK OK ? fail fail ?
Cope shop seismic OK OK ? fail fail ?

Example of ?: In a full-featured SDS2 program , selecting ' Cope field weld #3 ' as the " Bottom flange operation " for a W tee horizontal brace produces the failure message, and a weld preparation will not be applied to the stem of the W tee. However, if the user of that program selects the same operation as the " Top flange operation ," the weld preparation will be applied to the top flange of the W tee and, of course, that user will not get the failure message. All operations in the above chart that are marked ? work in a similar way.

To clear the failure message, the user of a full-featured SDS2 program can switch to a different " Top/bottom flange operation ."

page 1 | contents | failure messages | column review window | top


- F -

Fill bearing strength exceeded: This applies to a column splice plate connection for two unequal columns in which the fill plate is overstressed by the load on the upper column.

To get an " Input connection type " splice plate connection, the user of a full-featured SDS2 program could make connection design build a weaker connection by lowering the " Load " on the upper column. Or the user could change the " Section size " of one or both of the columns so that they are equal, thus causing a fill plate to not be designed.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Fill length limit exceeded: This applies to a column splice plate for two unequal columns in which the load is so great that, in order to make a connection strong enough, connection design must construct a longer bearing fill than is allowed.

To get an " Input connection type " splice plate connection, the user of a full-featured SDS2 program could make connection design build a weaker connection by lowering the " Load " on the column. Or the user could change the " Section size " of one or both of the columns so that they are equal, thus causing a fill plate to not be designed.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Frames to a Model Complete member: This applies when the member this column frames to has its " Model complete date " set.

You will get a yellow " Frames to ... " banner like the following even if there is no connection failure. This banner describes the framing situation, but does not necessarily apply to connection design.

 Frames to a Model Complete member

In addition to the above banner, you may (but will not necessarily) get a red banner like the following, which indicates a connection failure due to connection design not being permitted to modify the main material of the model-complete member. This can happen, for example, if this column was added, or its " Input connection type " was changed, after the framed-to member's " Model complete date " was set.

  Frames to a Model Complete member

The user of full-featured SDS2 program could " Force " the connection or change the model complete type on the model complete member from ' Restrictive ' to ' Legacy ', but the connection would probably not be designed correctly. Before connection design can generate a properly designed connection on this end of the column, the user needs to type in ' 0 ' (zero) to enter ' **NOT SET** ' in place of the date entry for " Model complete date " on the member that this column frames to. See the following table:

framing situation likely cause
column to column
(splice connection)
 The opposite column has its " Model complete date " set.
column to beam or joist
(base/cap plate)
The beam or joist has its " Model complete date " set.

page 1 | contents | failure messages | column review window | top


- G -

Gage less than minimum required by AISC: You get this message when connection design is unable to design a column splice connection with " Web plates " because the web plate gage is less than the minimum of 3 inches required by AISC. It is likely that connection design has determined that it needs a gage that is less than 3 inches because you are splicing together small section sizes. You can get this failure message regardless of the " Connection design method ."

One possible fix that the user of a full-featured SDS2 program can employ to allow connection design to create a web plate spice connection is to specify a smaller " NM bolt diameter " for the bolts, thus allowing the edge distance for those bolts to be maintained while simultaneously permitting a gage of at least 3 inches. Another possible fix is for the user to enter a larger " Section size " for each of the two column ends that are being spliced.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- H -

Hangar connection not supported: This end connection failure message applies when a column end's " Input connection type " has been set to ' Clip angle ' or ' Shear '. It can also apply when a ' User defined ' or ' Auto standard ' hanger connection has been selected as the column end's " Input connection type ."

Column hanger connections are not supported because the connection design limit state checking and calculations that are employed to create these connections are based on beam clip angles and beam shear connections, which are not hanger connections. As such, connection design will not pass a hanger connection, but instead will fail the connection with this message.

To get a solids model of a hanger clip angle or hanger shear plate, the user of a full-featured SDS2 program needs to open the desired column end's " Information " leaf and " Force " the connection.

HSS cap plate flexure strength failure: You get this message on a HSS round or HSS rectangular column when connection design is unable to design an auto cap plate that is strong enough to stand up to the load on the column.

To get an " Input connection type " auto cap plate, the user of a full-featured SDS2 program could lower the " Load " on the column and thus cause a weaker connection to be designed.

Another way to get a cap plate is to apply a ' User cap plate '.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

HSS wall crippling failure under cap plate: You get this message on a HSS round or HSS rectangular column with an auto cap plate when connection design has determined that the column itself (not the connection) is unable to stand up to the load.

To get an " Input connection type " auto cap plate, the user of a full-featured SDS2 program needs to select a stronger " Section size " for the column or lower the " Load " on the column.

Another way to get a cap plate is to apply a ' User cap plate '.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

HSS wall yield failure under cap plate: You get this message on a HSS round or HSS rectangular column with an auto cap plate when connection design has determined that the column itself (not the connection) is unable to stand up to the load.

To get an " Input connection type " auto cap plate, the user of a full-featured SDS2 program could choose a " Steel grade " for the column that has a stronger yield strength. For pipe columns, steel grades are setup on the Pipe Grades window. For tube columns, steel grades are set up on the HSS/TS Grade window. Or the user could change the " Section size " to a HSS material with a thicker wall, or lower the " Load " on the column.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- I -

Invalid connection specifications for splice connection: This applies when the " Input connection type " is ' Splice plate '. It indicates that the choices made to " Connection specifications " for the column end (top or bottom) on which this connection failure message appears are incompatible with choices made for the " Connection specifications " on the opposing column end.

For example, if this column's splice connection " Column attachment " is set to ' Welded ' and, on the appropriate end of the opposing column, " Column attachment " is set to ' All-Bolted plates, ' you will get this failure message.

To clear this message, the user of a full-featured SDS2 program needs to make the " Connection specifications " for the appropriate ends of the two column compatible.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Invalid end operation for this type of material: This connection failure message indicates that the " Top/bottom flange operation " under " End preparations " on the member window will not work because the " Section size " of the member is a channel or angle. In the table below, situations that produce this failure message are marked fail .

OK = end operation is applicable to the material type
fail = invalid end operation for this type of material
289 = failure message number 289
  W , S C L tube   pipe   WT
Cope plain OK OK OK OK OK OK
Cope field #3 OK OK 289 289 289 289
Cope shop #3 OK OK 289 289 289 289
Cut flange width OK fail fail 289 289 289
Cut flange flush OK fail fail 289 289 289
Clip flange OK 289 289 289 289 289
Notch top/bottom 289 289 289 OK OK 289
Notch NS/FS 289 289 289 OK OK 289
Cope field #1 OK OK 289 289 289 289
Cope shop #1 OK OK 289 289 289 289
Clip web OK OK OK 289 289 OK
Cope field seismic OK OK 289 289 289 OK
Cope shop seismic OK OK 289 289 289 289

To clear the failure message, the user of a full-featured SDS2 program can switch to a different " Top/bottom flange operation ."

Invalid material type for supporting member: Most likely you will get this connection failure message for an auto base/cap plate , but you may also be able to get it for other types of connections.

To get an " Input connection type " connection, the user of a full-featured SDS2 program needs to change the material type on the supporting member.

For beams: The " Section size " must be wide flange, channel, tube, welded plate wide flange, welded plate box or S shape in order for connection design to generate a connection.

For columns: The " Section size " must be wide flange, HSS/PIPE (pipe), HSS/TS (tube), welded plate wide flange, welded plate box or S shape in order for connection design to generate a connection.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Invalid material type for this member: You get this connection failure message when an invalid material type has been entered as the " Section size " for this column.

To get an " Input connection type " connection, the user of a full-featured SDS2 program needs to change the " Section size ." For columns, the " Section size " must be wide flange , S shape , welded plate wide flange , HSS round (pipe), HSS rectangular (tube) or welded plate box in order for a connection to be designed.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Invalid offset column connection: You get this message when connection design fails an auto base cap/plate because the work line of the column does not pass through the center of the top or bottom flange of the beam. Generally this occurs when the column slopes and the worklines of the column and beam are not in alignment.

To get an " Input connection type " connection, the user of a full-featured SDS2 program probably needs to delete the column then re-add it so that its work point goes to the center of the top/bottom flange of the beam.

If the user still can't get a connection, change the " Input connection type " to a ' User base/cap plate '.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- L -

Locked beam stiffener interferes with opposite stiff: This message applies when the choice made to " Design transverse stiffeners for base/cap plate connection " has caused connection design to create beam stiffeners in the beam above or below this column and there is another column framing to the opposite flange of the beam and a beam stiffener is also required for that column. The connection failure message is generated during the " Framing situations " checking phase of Process when the program is unable to reconcile the two connections due to connection design locks in one or both of the connections.

Under circumstances where connection design could reconcile the conflicting values from the two columns, the program would apply the values that generate a stiffener of maximum cross-sectional area.

To fix this problem in a full-featured SDS2 program , the user of that program should unlock ( ) the connection design locks found in the " Stiffener Plate " leaf for the column that would generate stiffeners with the lesser cross-sectional area. The connection design locks on the other column will then govern how the transverse beam stiffeners in the beam between the two columns are designed.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Locked bolt edge distance not within required min/max values: This failure message is difficult to reproduce since it is a catch-all message that will only be generated if a more specific connection failure message has not been generated to account for a connection failure. It may apply to any connection that is bolted. There is no easy-to-state rule that defines exactly what minimum and maximum edge distance values are acceptable since such requirements are based on the connection type, hole type, bolt diameter, bolt type, design code and other factors.

If the user of a full-featured SDS2 program gets this failure message, that user may be able to unlock ( ) the edge distance so that the program is able to calculate an acceptable edge distance. Or the user may need to unlock ( ) a connection design lock that is related to edge distance. Alternatively, it may be possible to keep all of the potentially offending lock fields locked ( ) if the user enters different values to those fields.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Locked bolt spacing not within required min/max values: This failure message is difficult to reproduce since it is a catch-all message that will only be generated if a more specific connection failure message has not been generated to account for a connection failure. It may apply to any connection that is bolted. There is no easy-to-state rule that defines exactly what minimum and maximum bolt spacing values are acceptable since such spacing requirements are based on the connection type, hole type, bolt diameter, bolt type, design code and other factors.

If the user of a full-featured SDS2 program gets this failure message, that user may be able to unlock ( ) the bolt spacing so that the program is able to calculate an acceptable bolt spacing. Or the user may need to unlock ( ) a connection design lock that is related to bolt spacing. Alternatively, it may be possible to keep all of the potentially offending lock fields locked ( ) if the user enters different values to those fields.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Locked connection has too many constraints: This is a catch-all failure message that may apply to various connection types or framing situations or loading conditions. It indicates a problem with user-entered values made to connection design locks . Connection design may have failed the connection because the locked ( ) settings prevented the program from designing a connection of sufficient capacity to stand up to the governing load. Or it may be that locked settings introduced math errors or physical inconsistencies that connection design is unable to solve.

Fixing this problem in a full-featured SDS2 program may be as simple as correcting a user-entered value that is inconsistent with related, interdependent values that are also locked. Or the user may have to unlock ( ) some of the connection design locks.

If, on the other hand, the user insists that the connection be designed around the user-entered values, and that user therefore does not want to remove any locks, the user might try lifting other constraints, such as user-applied setbacks. The user also may be able to get the desired connection by lowering the governing load.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- M -

Maximum bolt diameter is 1 1/4 in; 31 mm: This applies to auto base/cap plates . Per page 14-8 of the AISC 14th edition, connection design does not permit bolt diameters larger than 1 1/4 in (31 mm).

You can get this messages when the " Input connection type " is ' Auto base/cap plate ' and the " NM bolt diameter " entered on the Column Review window or the Home > Project Settings > Job > Bolts, Washers, and Holes > Bolt Settings > " Default non-moment bolt diameter for this job " is larger than 1 1/4 inch (31 mm).

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Max stiffener thickness exceeded: This applies to an auto base/cap plate or user base/cap plate that is on a column which connects to a beam. It indicates that, in order to design a base or cap plate of sufficient strength, connection design requires beam stiffeners that are thicker than the maximum thickness allowed.

To get an " Input connection type " connection, the user of a full-featured SDS2 program could use stronger materials (by changing the " Section size " of the beam). Or the user could lower the " Load " on the column and thus allow connection design to create a weaker connection. The user can also disable the creation of transverse beam stiffeners for auto base/cap plate or user base/cap plate by setting " Use transverse beam stiffeners " to ' Never 'in a Column Edit window's " Connection specifications " . A red banner appears in " Information " and in the design calculation reading "Beam web design checks removed by user", and the connection passes.

Also see Home > Project Settings > Job > Design > Plate Design Settings > Design transverse stiffeners for base/cap plate connection.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Mismatched column sizes at splice: This message results when the upper column has greater cross-sectional area than the column below it, thus making it impossible for connection design to create a column splice plate connection that will work.

To get an " Input connection type " splice plate, the user of a full-featured SDS2 program needs to change the " Section size " for either or both columns so that the lower column has the greater cross-sectional area. In problems such as this one, which have to do with geometry, it is generally a good idea to visually inspect the framing situation by reviewing the 3D model .

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

More than 25 rows of bolts in fill: This message results when, to design a column splice plate connection of sufficient strength to stand up to the load, connection design requires more than 25 rows of bolts in the fill plate.

To get an " Input connection type " splice plate with less than 25 rows of bolts, the user of a full-featured SDS2 program could lower the " Load " and thus cause a weaker connection to be designed.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- N -

No supporting member: You get this connection failure message when an ' Auto base cap plate ' has been entered as the " Input connection type " for the end of a column that does not frame to anything.

To get a column plate, the user of a full-featured SDS2 program may want to change the " Input connection type " to ' User base/cap plate ' and enter an " Plate schedule number " from the Base / Cap Plate Schedule .

Another possible solution for the user is to switch the " Connection " to " Force ." Connection design locks under a leaf named Column Plate can then be used to refine the connection to the user's specifications.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- P -

Physical limitations exceeded: You get this catch-all connection failure message when other messages do not apply.

Ways to diagnose the problem are to review the 3D model , or to generate a Connection Design Calculations or Expanded Connection Design Calculations report and evaluate which formulas on the Connection Design Calculations Cover Sheet apply to the situation.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- S -

Suitable plate thickness not found: This applies to connection plates when the box is checked for " Use miscellaneous plates list " on the Column Review window. It indicates that connection design has determined that a plate of a particular thickness is required for the connection, but such a plate (or a slightly thicker plate) is not in Home > Project Settings > Fabricator > Standard Fabricator Connections > Plates ..

To get an " Input connection type " connection, the user of a full-featured SDS2 program first needs to add a suitable plate to the " Plates " list. Or the user can uncheck the box for " Use miscellaneous plates list ." Or the user can remove all entries from the " Plates " list.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- U -

Unsupported connection type: You get this message when connection design is unable to generate the currently entered " Input connection type ," usually because of this column's framing situation.

The user of a full-featured SDS2 program may want to review the 3D model to evaluate the situation. Also, the user should check the " Section size " of this column and the member this column frames to.

The user might also get this message because the work points of the column were improperly placed, thus resulting in a framing situation problem. To fix this problem, the user could Erase the column then re-add it.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

Uplift load not applicable to this connection: This applies to auto standard column base and cap plate connection to which a " Splice uplift " has been entered.

To get an " Input connection type " connection, the user of a full-featured SDS2 program needs to enter a " Splice uplift " of ' 0 ' or change the " Input connection type " to ' Splice plate '. Uplift loads are used in design calculations for column splices only.

User entered loads at splice must match: You may get this message on a column that has a column splice plate . The message indicates that the opposing column being spliced has a different (non-matching) user-entered " Load " or " Moment " or " Splice uplift " or " Horizontal shear ."

The user of a full-featured SDS2 program may be able to get connection design to create a connection by using any of the following fixes, all of which are means for specifying equal loads on the two columns:

Where load = " Load " or " Moment " or " Splice uplift " or " Horizontal shear " ...

Fix 1: Set the load on each of the two spliced column ends to " Auto ."

Fix 2: Keep the load on both columns user-entered (" Auto "), but change the value on one of the columns so that it exactly matches the value on the opposing column.

Fix 3: Keep the load on one of the columns user-entered (" Auto "), but switch the load on the other column to " Auto ."

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

User plate does not exist: You may get this message on a Column Review window whose bottom- or top-end " Input connection type " is ' User base/cap plate '. It indicates that the " Plate schedule number " that has been entered for that column end no longer exists in the Base / Cap Plate Schedule .

The most straightforward way for a user of a full-featured SDS2 program to fix for this problem is to add a new definition to the Base / Cap Plate Schedule, then enter the number of that definition as the " Plate schedule number " on the column.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top


- W -

Weld length is greater than maximum permissible on face: You may get this connection failure message as a result of a user of a full-featured SDS2 program having worked with " Column Plate Welds " connection design locks, which control welds to a column plate. Specifically, if the user made an entry to " Maximum weld length " that is larger than the column face that the entry is made for, the connection would fail, and this message would be generated.

One way to clear this failure message and get a connection is for the user of that full-featured SDS2 program to enter a distance to " Maximum weld length " that is smaller than the face that the weld is being added to. Another way is to set the " Weld type " for that face to ' None ' so that no weld is designed for that face.

Before attempting to fix this connection, the user of the full-featured SDS2 program should read and understand the relevant warnings .

page 1 | contents | failure messages | column review window | top