Brace Instance Properties

The following table lists the default instance properties for a typical brace.

Name	Description
Constraints
Reference Level	The constraining level.
Cross-Section Rotation	Parameter that controls rotating beams and braces. The angle of rotation is measured from the beam’s work plane and the direction of the center reference plane.
Construction (Pre 2014 projects)
Start Extension	The dimension between the edge of the start end of the brace and the element to which it is connected. This parameter is only available in projects created in versions prior to Autodesk Revit 2014 containing brace families that have not been updated. It is recommended to use the Geometric Position Start Extension below. Using both is an additive extension.
End Extension	The dimension between the edge of the finish end of the brace and the element to which it is connected. This parameter is only available in projects created in versions prior to Autodesk Revit 2014 containing brace families that have not been updated. It is recommended to use the Geometric Position Start Extension below. Using both is an additive extension.
Materials and Finishes
Structural Material	Controls the hidden view display of structural elements. Concrete or Precast will display as hidden. Steel or Wood will be visible when another element is in front of it. Unassigned will not display if hidden by another element. See Material Structural Classes.
Structural
Start Connection	The moment frame or cantilever symbol at the start end of brace, if applicable.
End Connection	The moment frame or cantilever symbol at the finish end of brace, if applicable.
Cut Length	The physical length (not the analytical length). This is a read-only value.
Structural Usage	Specifies Vertical Bracing, Kicker brace, or Other.
Start Attachment Level Reference	The constraining level of the start end of the brace.
Start Attachment Elevation	The elevation of the start end referenced from the Start Attachment Level Reference.
End Attachment Level Reference	The constraining level of the finish end of the brace.
End Attachment Elevation	The elevation of the finish end referenced from the End Attachment Level Reference.
Start Attachment Type	Distance or Ratio. Type of measure of distance between brace start end and a designated beam end. Applies to the brace end attached to a beam.
Start Attachment Distance	Available when Start Attachment Type is specified as Distance. Distance of separation of the brace start end from the designated beam end. Applies to the brace end attached to a beam.
Start Attachment Ratio	Available when Start Attachment Type is specified as Ratio. Ratio (percentage) of separation of the brace start end from the designated beam end. Applies to the brace end attached to the beam.
End of Referenced Element	Available when attached to a beam. Designated end (Start or End) of the referenced beam to which the start end of brace is attached. Applies to the brace end attached to the beam.
End Attachment Type	Distance or Ratio. Type of measure of distance between brace finish end and a designated beam end. Applies to the brace end attached to a beam.
End Attachment Distance	Available when End Attachment Type is specified as Distance. Distance of separation of the brace finish end from the designated beam end. Applies to the brace end attached to a beam.
End Attachment Ratio	Available when End Attachment Type is specified as Ratio. Ratio (percentage) of separation of the brace finish end from the designated beam end. Applies to the brace end attached to the beam.
End of Referenced Element	Available when attached to a beam. Designated end (Start or End) of the referenced beam to which the finish end of brace is attached. Applies to the brace end attached to the beam.
Rebar Cover - Top Face	Applies to concrete beams only. The rebar cover distance from the column top face.
Rebar Cover - Bottom Face	Applies to concrete beams only. The rebar cover distance from the column bottom face.
Rebar Cover - Other Faces	Applies to concrete beams only. The rebar cover distance from the column to adjacent element faces.
Estimated Reinforcement Volume	Specifies the estimated reinforcement volume of the selected element. This is a read-only parameter that only displays when rebar has been placed.
Enable Analytical Model	Displays the analytical model and includes it in analytical calculations. Selected by default. See Disabling the Analytical Model.
Dimensions
Length	The length of the brace location line. This is a read-only value.
Volume	The volume of the selected brace element. This is a read-only value.
Identity Data
Comments	User comments.
Mark	A label created for the brace. Possible use: shop mark. This value must be unique for each brace in a project. Revit warns you if the number is already used but allows you to continue using it. You can see the warning using the Review Warnings tool. See Reviewing Warning Messages.
Phasing
Phase Created	Indicates in which phase the brace component was created. See Project Phasing.
Phase Demolished	Indicates in which phase the brace component was demolished. See Project Phasing.
Geometric Position
Start Extension	Applies to steel braces only. The dimension between the edge of the start end of the brace and the element to which it is connected.
End Extension	Applies to steel braces only. The dimension between the edge of the finish end of the brace and the element to which it is connected.
Start Join Cutback	Applies to steel braces only. The dimension between the edge of the start end of the brace and the element to which it is connected. Only for joined start of element.
End Join Cutback	Applies to steel braces only. The dimension between the edge of the finish end of the brace and the element to which it is connected. Only for joined end of element.
yz Justification	Applies to steel braces only. Either Uniform or Independent. Uniform allows setting the same parameters to both start and end of a brace. Independent allows setting different parameters to start and end of a brace.
y Justification	Applies to Uniform justified steel braces only. Specifies the location of the physical geometry with respect to the location line: either Origin, Left, Center, Right.
y Offset Value	Applies to Uniform justified steel braces only. The numeric value that offsets the geometry. The distance between the location line and the characteristic point set in y Justification parameter.
z Justification	Applies to Uniform justified steel braces only. Specifies the location of the physical geometry with respect to the location line: either Origin, Top, Center, Bottom.
z Offset Value	Applies to Uniform justified steel braces only. The distance between the location line and the characteristic point set in z Justification parameter.
Start y Justification	Applies to Independent justified steel braces only. Specifies the location of the physical geometry of the start end of the brace with respect to the location line: either Origin, Left, Center, Right.
Start y Offset Value	Applies to Independent justified steel braces only. The numeric value that offsets the geometry at the start end of the brace. The distance between the location line and the characteristic point set in the Start y Justification parameter.
Start z Justification	Applies to Independent justified steel braces only. Specifies the location of the physical geometry with respect to the location line at the start end of the brace: either Origin, Top, Center, Bottom.
Start z Offset Value	Applies to Independent justified steel braces only. The numeric value that offsets the geometry at the finish end of the brace. The distance between the location line and the characteristic point set in the Start z Justification parameter.
End y Justification	Applies to Independent justified steel braces only. Specifies the location of the physical geometry of the finish end of the brace with respect to the location line: either Origin, Left, Center, Right.
End y Offset Value	Applies to Independent justified steel braces only. The numeric value that offsets the geometry at the start end of the brace. The distance between the location line and the characteristic point set in the End y Justification parameter.
End z Justification	Applies to Independent justified steel braces only. Specifies the location of the physical geometry of the finish end of the brace with respect to the location line: either Origin, Left, Center, Right.
End z Offset Value	Applies to Independent justified steel braces only. The numeric value that offsets the geometry at the start end of the brace. The distance between the location line and the characteristic point set in the End z Justification parameter.
Other
Start Extension Calculation	Applies to steel braces only. Specifies family parameters; defines maximum distance of start extension parameter. This is a read-only value.
End Extension Calculation	Applies to steel braces only. Specifies family parameters; defines maximum distance of end extension parameter. This is a read-only value.
Identity Data (Analytical Braces)
Member Number	An identifier created for the analytical member. This value should be unique across Analytical Beams, Analytical Braces and Analytical Columns in a project. Revit warns you if the number is already used but allows you to continue using it. You can see the warning using the Review Warnings tool. See Reviewing Warning Messages.
Comments	User comments.
Structural Analysis (See Structural Analytical Model Overview.)
Start Release	Specifies the start release condition: either Fixed, Pinned, Bending Moment, or User Defined. User Defined allows you to enable/disable each of the start release conditions.
Start Fx	The translational release at the start end of the brace along the local x-axis.
Start Fy	The translational release at the start end of the brace along the local y-axis.
Start Fz	The translational release at the start end of the brace along the local z-axis.
Start Mx	The rotational release at the start end of the brace along the local x-axis.
Start My	The rotational release at the start end of the brace along the local y-axis.
Start Mz	The rotational release at the start end of the brace along the local z-axis.
End Release	Specifies the end release condition: either Fixed, Pinned, Bending Moment or User Defined. User Defined allows you to enable/disable each of the end release conditions.
End Fx	The translational release at the end of the brace along the local x-axis.
End Fy	The translational release at the end of the brace along the local y-axis.
End Fz	The translational release at the end of the brace along the local z-axis.
End Mx	The rotational release at the end of the brace along the local x-axis.
End My	The rotational release at the end of the brace along the local y-axis.
End Mz	The rotational release at the end of the brace along the local z-axis.
Analyze As	Used by external analysis applications to determine whether brace conditions contribute to lateral analysis. See Projection Adjustment.
Analytical Properties
Family Type	The family type of the element.
Physical Material Asset	The name of the physical asset assigned to the brace material (read-only).
Length	The length of the analytical model.
Cross-Section Rotation	Parameter that controls rotating beams and braces. The angle of rotation is measured from the beam’s work plane and the direction of the center reference plane.
Analytical Alignment
Start Alignment Method	Either Auto-Detect or Projection. Specifies if the horizontal and vertical references of the brace start position are automatically justified or have a defined projection.
Start y Projection	Either Location Line, Left of Element, Center of Element, Right of Element, <Grids...>, or <Reference Planes...>. Available when Start Alignment Method is specified as Projection. Specifies the horizontal limits of the analytical model at the start of the brace.
Start z Projection	Either Location Line, Top of Element, Center of Element, Bottom of Element, <Level...>, or <Reference Planes...>. Available when Start Alignment Method is specified as Projection. Specifies the vertical limits of the analytical model at the start of the brace.
End Alignment Method	Either Auto-Detect or Projection. Specifies if the horizontal and vertical references of the brace end position are automatically justified or have a defined projection.
End y Projection	Either Location Line, Left of Element, Center of Element, Right of Element, <Grids...>, or <Reference Planes...>. Available when End Alignment Method is specified as Projection. Specifies the horizontal limits of the analytical model at the end of the brace.
End z Projection	Either Location Line, Top of Element, Center of Element, Bottom of Element, <Level...>, or <Reference Planes...>. Available when End Alignment Method is specified as Projection. Specifies the vertical limits of the analytical model at the end of the brace.
Other
Start Extension Calculation	Applies to steel braces only. Specifies family parameters; defines maximum distance of start extension parameter. This parameter is only available in projects created in versions prior to Autodesk Revit 2014 containing brace families that have not been updated. This is a read-only value.
End Extension Calculation	Applies to steel braces only. Specifies family parameters; defines maximum distance of end extension parameter. This parameter is only available in projects created in versions prior to Autodesk Revit 2014 containing brace families that have not been updated. This is a read-only value.