Autodesk Revit Format Attributes (Feature Representation)

Revit represents building models with three types of elements, known as

  • Model elements,
  • Datum elements, and
  • View-specific elements.

Please see the Autodesk Revit documentation for additional details.

Note: FME reads model elements as features, with information about related datum elements as attributes. View-specific elements, such as annotations, are read along with model elements in floor plan reading mode.

Quick Links

Metadata Features

Metadata.FileInformation

Metadata.ViewInformation

Metadata.FileLinks

Metadata.FamilyInformation

Metadata.StyleInformation

Categories
Supported Revit Categories
Floor-Plan-Only Supported Revit Categories

Attributes

Common Attributes

BUILDING_LEVEL Field Attributes
Hosted Element Attributes
Additional Parameters as Attributes
Additional Parameters as Attributes for Piping Discipline Features
User-Defined Parameters as Attributes

Special Feature Types

Metadata Features

Metadata.FileInformation

The first feature output by the reader has the feature type Metadata.FileInformation. This feature has no geometry, and contains attributes with file-level information.

Attribute/Trait Name

Contents

DocVer

The version of this Revit file.

DocUpdate

The last time this file was updated.

AuthorUsername

The username of the Revit user who last saved the file.

CreatedBy

The program used to author the file.

IsCentralModel

Whether or not this file is a central model.

IsCreatedLocally

Whether or not this file was created locally.

CentralModelPath

The file path to this file's central model, if applicable.

DocSize

The size of the file in bytes.

Additionally, the Metadata.FileInformation feature contains attributes identifying the elevation of each level in the file. These attributes have the form LevelElevationInfo.<Level Name>.

The Metadata.FileInformation feature also has attributes identifying the UniqueID of each level in the file. These attributes have the form LevelUniqueIds.<Level Name>.

Metadata.ViewInformation

After the Metadata.FileInformation feature, the reader will output Metadata.ViewInformation features. These features have no geometry, and each will have view-level information corresponding to one view in the file.

Attribute/Trait Name

Contents
Name The name of the view.
DetailLevel The detail level of the view.
Scale The view scale value, in the form 1 : <scale>.
Discipline The discipline setting of the view
Template The name of the view template. If the view has no template, this is set to “None”.
Type The type of the view, such as Floor Plan or 3D view.

Orientation

Plan views only. The orientation value of the view (Project North or True North).

IsTemplate

Indicates whether or not the view is a template view.
ViewRangeCutPlane.Level Plan views only. The level associated with the cut plane in the view range.
ViewRangeCutPlane.Offset Plan views only. The offset associated with the cut plane in the view range.
ViewRangeTop.Level Plan views only. The level associated with the top of the view range.
ViewRangeTop.Offset Plan views only. The offset associated with the top of the view range.

ViewRangeBottom.Level

Plan views only. The level associated with the bottom of the view range.

ViewRangeBottom.Offset

Plan views only. The offset associated with the bottom of the view range.

ViewDepth.Level

Plan views only. The level associated with the view depth in the view range.

ViewDepth.Offset

Plan views only. The offset associated with the view depth in the view range.

HasHiddenElements

Indicates whether the view contains elements that are hidden.

Metadata.FileLinks

The Metadata.FileLinks feature type holds information about the linked Revit models and CAD drawings in the file. Each feature represents one link, with attributes relating to that link. These attributes differ between Revit Links and CAD links. The geometry of each feature is set to the insertion point of the link.

Revit Links

The following attributes apply to Revit links:

Attribute/Trait Name

Contents
IsRelativePath Whether the file is referenced via a relative path. If false, it is referenced by an absolute path.
ReferenceType The type of reference. This can be either Attachment or Overlay.
LinkedFilePath The path to the linked file. Depending on the value of IsRelativePath, this will either be an absolute path or a relative path.

FileType

Notes whether this link is a Revit file or a CAD file. For Revit Link features, this value will be set to “Revit”.

CAD Links

The following attributes apply to CAD links:

Attribute/Trait Name

Contents

LinkType

Indicates whether the file is Linked or Imported. CAD files that are linked have more information available and therefore have more attributes. This attribute will have the value Link for linked files, and Import for imported files.
IsRelativePath Linked files only. This attribute indicates whether the file is referenced via a relative path. If false, it is referenced by an absolute path.

Name

The name of the referenced file.
LinkedFilePath

Linked files only. The path to the linked file. Depending on the value of IsRelativePath, this will either be an absolute path or a relative path.

FileType

Notes whether this link is a Revit file or a CAD file. For CAD Link features, this value will be set to “CAD”.

Metadata.FamilyInformation

The Metadata.FamilyInformation feature type will output one feature for each family in the target Revit file. These features will have attributes about the family it represents.

Note: Currently, FME will only output metadata information about loaded Revit families. System family information will not be output but support is planned for the future.

The following attributes apply to Metadata.FamilyInformation features:

Attribute/Trait Name

Contents

Shared

Indicates whether the family is shared.

User Created

Indicates whether the family is user-created.

Name

The name of the family.

Is Model Family

Indicates whether the family is a model family.

Is Host Based

Indicates whether the family is host-based.

Has Instances

Indicates whether the family has instances.

Path

If applicable, this contains the path to the folder where the family is located.

Loadable

Indicates whether this family is loadable.

Type Names{}

This list attribute contains one entry for each type within the family. Each entry holds the name of the type in question.

Additionally, any supported family parameters set on families read by this feature type will also be set as attributes on features.

Metadata.StyleInformation

The Metadata.StyleInformation feature type will output features holding information about several style-related parts of the file. These features include the:

  • Model Line Weight table

  • Perspective Line Weight table

  • Annotation Line Weight table

  • Fill patterns

  • Line Patterns

The following attribute applies to all Metadata.StyleInformation features:

Attribute/Trait Name

Contents

Type

Indicates the Type of style information this feature represents. This can be set to any of the types listed above.

Line Weight tables

The Line Weight table features will contain several list attributes, each representing a column in their corresponding table. For the Model Line Weights table feature, these list attributes will be named after the scale of the corresponding column (for example a column with scale 1” = 1’0” will have an attribute 1:12). The values of these attributes are the entries in the corresponding table. Using our example from before, 1:12{0} will be set to the value in the first row in the 1” = 1’0” column, 1:12{1} will be the second, and so on.

Since there is only one column in both the Perspective Line Weight table and the Annotation Line Weight table, the features representing them will only have one list attribute named Line Weights.

Resource  More Information about Lists

Fill Patterns

The fill pattern feature has the Fill Pattern{}.Name and Fill Pattern{}.Type attributes. Each entry in Fill Pattern{}.Name represents the name of a fill pattern found in the file, and the corresponding Fill Pattern{}.Type entry indicates whether this fill pattern is a Model or Drafting pattern.

Line Patterns

The line pattern feature has the Line Pattern{}.Name attribute. Each entry in LinePattern{}.Name represents the name of a line pattern found in the file.

Line Styles

The line style feature has the Line Style{}.Name, Line Style{}.Line Color, Line Style{}.Line Pattern, and Line Style{}.Line Weight Projection attributes. Each entry in the Line Style{} list attribute represents one row in the line style table in the file.

SitePoints

The SitePoints feature type will contain two points: one representing the Survey Point in the file, and one representing the Project Base Point. This feature type will have the following attributes on features:

Attribute/Trait Name

Contents

Type

Indicates the type of the feature. This will hold two possible values: “Survey Point” or “Project Base Point”

N/S

The N/S value for the point.

E/W

The E/W value for the point.

Elev

The Elev value for the point.

Angle to True North

Project base point only. The Angle to True North value for the point.

Categories

Supported Revit Categories

The following categories are supported by FME in all view types and will be read as features if their visibility is set to “on” in the selected view.

Revit Category Feature Type

Casework

Architectural.Casework

Ceilings

Architectural.Ceilings

Columns

Architectural.Columns

Curtain Panels

Architectural.CurtainPanels

Curtain Wall Mullions

Architectural.CurtainWallMullions

Doors

Architectural.Doors

Entourage

Architectural.Entourage

Floors

Architectural.Floors

Furniture

Architectural.Furniture

Furniture Systems

Architectural.FurnitureSystems

Generic Models

Architectural.GenericModels

Mass

Architectural.Mass

Parking

Architectural.Parking

Planting

Architectural.Planting

Plumbing Fixtures

Architectural.PlumbingFixtures

Railings

Architectural.Railings

Ramps

Architectural.Ramps

Fascias

Architectural.Roofs

Gutters

Architectural.Roofs

Roof Soffits

Architectural.Roofs

Roofs

Architectural.Roofs

Rooms

Architectural.Rooms

Site

Architectural.Site

Specialty Equipment

Architectural.SpecialtyEquipment

Stairs

Architectural.Stairs

Stair Landings

Architectural.Landings

Stair Runs

Architectural.Runs

Topography

Architectural.Topography

Top Rails

Architectural.TopRails

Walls

Architectural.Walls

Wall Sweeps

Architectural.Walls

Windows

Architectural.Windows

Communication Devices

Electrical.CommunicationDevices

Data Devices

Electrical.DataDevices

Cable Trays

Electrical.CableTrays

Cable Tray Fittings

Electrical.CableTrayFittings

Electrical Equipment

Electrical.ElectricalEquipment

Electrical Fixtures

Electrical.ElectricalFixtures

Fire Alarm Devices

Electrical.FireAlarmDevices

Lighting Devices

Electrical.LightingDevices

LightingFixtures

Electrical.LightingFixtures

Nurse Call Devices

Electrical.NurseCallDevices

Security Devices

Electrical.SecurityDevices

Telephone Devices

Electrical.TelephoneDevices

Air Terminals

Mechanical.AirTerminals

Duct Accessories

Mechanical.DuctAccessories

Duct Fittings

Mechanical.DuctFittings

Ducts

Mechanical.Ducts

Flex Ducts

Mechanical.FlexDucts

Mechanical Equipment

Mechanical.MechanicalEquipment

Flex Pipes

Piping.FlexPipes

Pipe Accessories

Piping.PipeAccessories

Pipe Fittings

Piping.PipeFittings

Pipes

Piping.Pipes

Pipe Segments

Piping.PipeSegments

Sprinklers

Piping.Sprinklers

Structural Columns

Structural.StructuralColumns

Structural Connections

Structural.StructuralConnections

Structural Foundations

Structural.StructuralFoundations

Structural Framing

Structural.StructuralFraming

Floor-Plan-Only Supported Revit Categories

The following categories are supported by FME, but are unique to floor-plan reading.

Revit Category

Feature Type

Cable Tray Tags

Architectural.CableTrayTags

Cable Tray Fitting Tags

Architectural.CableTrayFittingTags

Color Fill Legends

Architectural.ColorFillLegends

Detail Groups

Architectural.DetailGroups

Dimensions

Architectural.Dimensions

Elevations

Architectural.Elevations

Generic Annotations

Architectural.GenericAnnotations

Grids

Architectural.Grids

Lines

Architectural.Lines

Planting Tags

Architectural.PlantingTags

Property Lines

Architectural.Site

Room Tags

Architectural.RoomTags

Text Notes

Architectural.TextNotes

Sections

Architectural.Views

Window Tags

Architectural.WindowTags

Attributes

Common Attributes

Attribute/Trait Name

Contents

BaseCategory

The base category to which the feature belongs. The base category is more general than the Category (for example, the Roof Soffit category has a base category of Roofs).

Category

The category to which the feature belongs.

CreatedPhase

The phase of construction that the feature’s creation takes place.

DemolishedPhase

The phase of demolition that the feature’s destruction takes place.

Discipline

The Revit discipline to which the features belong. The set of disciplines includes Architectural, Structural, Electrical, Mechanical, and Piping.

ElementType

The type of element that this feature represents.

Family

The family to which the feature belongs.

FamilyType

The type of the family to which the feature belongs.

Function

The function of the feature. Possible values include Interior, Exterior, Foundation, Retaining, Soffit, and CoreShaft.

InExteriorShell

Whether the feature is part of the exterior shell of the model.

ObjectId

The object ID of the feature.

UniqueId

The unique ID of the feature. This ID is consistent for the lifetime of the element, even across multiple file sync operations.

Group

If the element is part of a group, this attribute will be set with the name of the group that the element belongs to.

WorksetName

If the element belongs to a workset, this attribute will be set to the name of the workset that the element belongs to.

BUILDING_LEVEL Field Attributes

These attributes contain information relating to the level of a building on which the feature is found. Stair (and some other) elements have two sets of these attributes: one for the level at their bottom (BaseLevel), and one for the level at their top (TopLevel).

Attribute/Trait Name

Contents

BuildingLevel

The level of the building that the feature is located on.

BuildingLevelElevation

The elevation of the feature’s building level.

BuildingLevelIsStory

The level that the feature is on is a building story.

BuildingLevelRoomOffset

The room offset of the feature.

Hosted Element Attributes

Elements that are hosted inside of other elements, such as doors, will have these additional attributes on their features.

Attribute/Trait Name

Contents

HostId

The objectID of a feature’s host element.

HostFeatureType

The feature type of a feature’s host element.

HostObjectFunction

The function of a feature’s host element.

Additional Parameters as Attributes

Additional built-in parameters will be read as attributes on features if they have been set on the corresponding Revit elements. These attributes are prefixed by their parameter set name, if applicable.

Attribute/Trait Name

Contents

Elevation

The elevation of this instance of the feature.

PointElevation

The elevation point of this feature.

Additional Parameters as Attributes for Piping Discipline Features

These parameters can be found on features from the piping discipline only.

Attribute/Trait Name

Contents

CalculatedSize

The calculated size of the feature.

Drain

The drain for this feature.

SupplyFitting

Whether this feature is a supply fitting.

SupplyPipe

Whether this feature is a supply pipe.

Trap

The trap for this feature.

WidthDiameter

The diameter of the feature.

User-Defined Parameters as Attributes

Family, Project, and Shared Parameters

FME will read family, project, and shared parameters from Revit elements as attributes on features if they belong to a supported parameter set. These parameter sets include:

  • Text
  • Title
  • Identity Data
  • Data
  • General
  • IFC
  • Phasing
  • Dimensions
  • Graphics
  • Analytical Properties
  • Electrical
  • Mechanical
  • Structural
  • Plumbing
  • Construction
  • Green Building
  • Constraints
  • Other

The parameters will be prefixed with the name of their set, similar to built-in parameters.

Schedule Parameters

FME will read schedule values as attributes on features. If an element belongs to a schedule, FME will attempt to read each column in that schedule and set attributes of the form <schedulename>.<columnname>. Note that not all column types are supported at this time.

For more information on linking a DWG file to your Revit dataset, please refer to the Autodesk help page: Link a DWG File and Use Shared Coordinates.