BIM Technical Standards: Minimum Attributes

At an absolute minimum, the following non-visual data must be attached to model data. The creator of the data is only responsible for attaching these fields to the object. The party responsible for entering the data will vary and should be defined within the project BEP. Completion of this information corresponds with Level of Detail (LOD) requirements defined by GSA requirements.

The minimum attributes are further defined in the Level of Detail section of the site. They are to be followed and may not be overridden in the BEP. What level an individual firm is responsible for will vary and is defined in either the standard Model Progression Matrix or a custom MPM that was defined as part of the project's BEP.

Standard


General

  • When authoring data within Autodesk Revit, the GSA provided Shared Parameters file must be used, with no exceptions.
  • When possible, data created outside of the Revit platform must be defined using the same GUID found in the Revit Shared Parameters file to identify the property.
  • If an attribute is provided, it will be used and not duplicated under a different name.

COBie Data

In the following table, the minimum COBie attributes for your BIM are defined. This list is intended to be the very minimum for your BIM to be accepted by GSA. Actual deployment of COBie on your project must be defined within the project BEP. For additional guidance on deploying COBie on your project, see the COBie Tutorial section of the site.

Responsibility for COBie data will almost always be shared between the designers and builders on a project. The responsible party listed below is the default breakdown for GSA work. It is expected that each team will review and adjust this list as part of the BEP development.

Attribute / Parameter Data Type Description Responsible Party
COBie-Floor-CreatedBy TEXT The email address of the user who created the object. Design team
COBie-Floor-Elevation TEXT Height above datum. Design team
COBie-Floor-ExtSystem TEXT Information on the creating application. Design team
COBie-Floor-CreatedOn TEXT Date the object was created. Design team
COBie-Floor-Height NUMBER Floor to floor height. Design team
COBie-Floor-Description TEXT Extended description of the object. Design team
COBie-Floor-ExtIdentifier TEXT Information on the creating application. Design team
COBie-Floor-Category TEXT Category of the floor (Site, Floor, Roof). Design team
COBie-Floor-ExtObject TEXT Information on the creating application. Design team
COBie-Floor-Name TEXT Unique name of the floor. Design team
COBie-Space-ExtSystem TEXT Information on the creating application. Design team
COBie-Space-Category TEXT Category of space. What kind of space is it? (OmniClass Table 13 Space Function) Design team
COBie-Space-ExtObject TEXT Information on the creating application. Design team
COBie-Space-UsableHeight NUMBER Used for COBie based data exchange. Design team
COBie-Space-ExtIdentifier TEXT Information on the creating application. Design team
COBie-Space-CreatedOn TEXT Date the object was created. Design team
COBie-Space-FloorName TEXT Lowest floor in which space appears Design team
COBie-Space-Description TEXT Extended description of the object. Design team
COBie-Space-GrossArea NUMBER Used for COBie based data exchange. Design team
COBie-Space-NetArea NUMBER Used for COBie based data exchange. Design team
COBie-Space-Name TEXT Unique space name primary key for all spaces. Design team
COBie-Space-CreatedBy TEXT The email address of the user who created the object. Design team
COBie-Space-RoomTag TEXT Room tag provides door number for building occupant Design team
COBie-Zone-CreatedBy TEXT The email address of the user who created the object. Design team
COBie-Zone-SpaceNames TEXT Used for COBie based data exchange. Design team
COBie-Zone-ExtObject TEXT Information on the creating application. Design team
COBie-Zone-Description TEXT Extended description of the object. Design team
COBie-Zone-ExtIdentifier TEXT Information on the creating application. Design team
COBie-Zone-Category TEXT Used for COBie based data exchange. Design team
COBie-Zone-Name TEXT Used for COBie based data exchange. Design team
COBie-Zone-CreatedOn TEXT Date the object was created. Design team
COBie-Zone-ExtSystem TEXT Information on the creating application. Design team
COBie-Type-WarrantyDurationUnit TEXT Used for COBie based data exchange. Construction team
COBie-Type-ModelNumber TEXT Used for COBie based data exchange. Construction team
COBie-Type-AssetType TEXT Used for COBie based data exchange. Construction team
COBie-Type-WarrantyDescription TEXT Used for COBie based data exchange. Construction team
COBie-Type-WarrantyDurationLabor TEXT Used for COBie based data exchange. Construction team
COBie-Type-Description TEXT Extended description of the object. Construction team
COBie-Type-ReplacementCost TEXT Used for COBie based data exchange. Construction team
COBie-Type-CreatedBy TEXT The email address of the user who created the object. Construction team
COBie-Type-ExtObject TEXT Information on the creating application. Construction team
COBie-Type-ExpectedLife TEXT Used for COBie based data exchange. Construction team
COBie-Type-WarrantyDurationParts TEXT Used for COBie based data exchange. Construction team
COBie-Type-WarrantyGuarantorParts TEXT Used for COBie based data exchange. Construction team
COBie-Type-Category TEXT Used for COBie based data exchange. Construction team
COBie-Type-WarrantyGuarantorLabor TEXT Used for COBie based data exchange. Construction team
COBie-Type-DurationUnit TEXT Used for COBie based data exchange. Construction team
COBie-Type-Name TEXT Used for COBie based data exchange. Construction team
COBie-Type-CreatedOn TEXT Date the object was created. Construction team
COBie-Type-Manufacturer TEXT Used for COBie based data exchange. Construction team
COBie-Type-ExtSystem TEXT Information on the creating application. Construction team
COBie-Type-ExtIdentifier TEXT Information on the creating application. Construction team
COBie-Component-SerialNumber TEXT Used for COBie based data exchange. Construction team
COBie-Component-Name TEXT Used for COBie based data exchange. Construction team
COBie-Component-TagNumber TEXT Used for COBie based data exchange. Construction team
COBie-Component-WarrantyStartDate TEXT Used for COBie based data exchange. Construction team
COBie-Component-ExtIdentifier TEXT Information on the creating application. Construction team
COBie-Component-ExtSystem TEXT Information on the creating application. Construction team
COBie-Component-TypeName TEXT Used for COBie based data exchange. Construction team
COBie-Component-CreatedBy TEXT The email address of the user who created the object. Construction team
COBie-Component-BarCode TEXT Used for COBie based data exchange. Construction team
COBie-Component-InstallationDate TEXT Used for COBie based data exchange. Construction team
COBie-Component-Description TEXT Extended description of the object. Construction team
COBie-Component-CreatedOn TEXT Used for COBie based data exchange. Construction team
COBie-Component-AssetIdentifier TEXT Used for COBie based data exchange. Construction team
COBie-Component-ExtObject TEXT Information on the creating application. Construction team
COBie-Component-Space TEXT Used for COBie based data exchange. Construction team
COBie-System-ExtObject TEXT Information on the creating application. Design team
COBie-System-CreatedOn TEXT Date the object was created. Design team
COBie--Description TEXT Extended description of the object. N/A
COBie-System-CreatedBy TEXT The email address of the user who created the object. Design team
COBie-System-ExtIdentifier TEXT Information on the creating application. Design team
COBie-System-ComponentNames TEXT Used for COBie based data exchange. Design team
COBie-System-ExtSystem TEXT Information on the creating application. Design team
COBie-System-Category TEXT Used for COBie based data exchange. Design team
COBie-System-Name TEXT Used for COBie based data exchange. Design team
COBie-Attribute-SheetName TEXT Used for COBie based data exchange. Shared
COBie-Attribute-CreatedBy TEXT The email address of the user who created the object. Shared
COBie-Attribute-CreatedOn TEXT Date the object was created. Shared
COBie-Attribute-ExtSystem TEXT Information on the creating application. Shared
COBie-Attribute-Name TEXT Used for COBie based data exchange. Shared
COBie-Attribute-RowName TEXT Used for COBie based data exchange. Shared
COBie-Attribute-ExtIdentifier TEXT Information on the creating application. Shared
COBie-Attribute-Unit TEXT Used for COBie based data exchange. Shared
COBie-Attribute-Category TEXT Used for COBie based data exchange. Shared
COBie-Attribute-ExtObject TEXT Information on the creating application. Shared
COBie-Attribute-Value TEXT Used for COBie based data exchange. Shared
COBie-Attribute-Description TEXT Extended description of the object. Shared

URL Data

URL data is to be added to all projects as a TYPE level parameter or attribute. The URL data will link to either a specific file or a folder based on whether the target data is a single file, such as an MSDS sheet, or multiple files, such as photos. The targeted data is to follow the structure outlined in the Data Submittal Standard.

Note: All links must be relative and follow the URL guidelines outlined in the Referencing and Linking section of the standard. Links containing "hard" paths will be rejected.

Attribute / Parameter Data Type Description
URL As-Built Drawings URL A URL link pointing to one or more as-built drawings, typically either DWGs or PDFs
URL MSDS URL A URL link pointing to one or more MSDS, typically a single PDF
URL Op and Maint Manuals URL A URL link pointing to one or more operation or maintenance manuals, typically PDFs
URL Owner Manual URL A URL link pointing to one or more owner manuals, typically PDFs
URL Photos URL A URL link pointing to one or more digital photographs, typically JPGs. This may link to a sub-folder of the divisions Photos folder when required.
URL Product Data URL A URL link pointing to one or more product data or information documents, typically PDFs
URL RFIs URL A URL link pointing to one or more scanned RFIs from the project, typically PDFs, although sometimes JPGs
URL Shop Drawings URL A URL link pointing to one or more shop drawings, typically DWGs or PDFs
URL Sketches URL A URL link pointing to one or more sketches, typically DWGs, PDFs, or JPGs
URL Warranty Information URL A URL link pointing to one or more documents containing warranty information, typically PDFs

URL Guidelines

Most BIM applications allow for the attaching of URLs (Universal Resource Locators) to individual BIM objects. This allows for many forms of data to be connected directly to the BIM object.

When using URLs in as-built or record data for GSA, there are certain rules that need to be followed to ensure that the URLs will continue to work once the data is submitted.

Standard

General

  • All URLs must be verified as working prior to the submittal of the data to GSA.

URL to Local Files

  • All URLs used in submitted data must be of the relative and never pathed to a absolute network location.
    • Valid use: .\Concrete\Warranty Info\Warranty.pdf
    • Invalid use: E:\Models\Concrete\Warranty Info\Warranty.pdf
  • URLs should always go deeper into the folder structure. Backlinking should be avoided whenever possible.
    • Valid use: .\Concrete\Warranty Info\Warranty.pdf
    • Invalid use: ..\..\Concrete\Warrant Info\Warranty.pdf

URL to Internet Address

  • Care must be used when linking to internet based resources. It is unlikely that they will be available, with address unchanged, for the life-cycle of the building.
  • Internet URLs must only be used when there is no means of making the content local to the data submittal.

Spatial Data (SDM)

Attribute / Parameter Data Type Description
AB Name Text -
AB Short Name Text -
ANSI.BOMA Category Description Text -
Architectural Room Number Text -
Building Number Text -
Building Specific Room Name Text -
CBR Number Text -
Ceiling Height Length -
Occupant Text -
Occupant Organization Abbreviation Text -
Occupant Organization Code Text -
Occupant Organization Name Text -
Required Area Text -
Room Name Text -
Space Category Description Text -
Space Type Description Text -

Green Building Properties

Attribute / Parameter Data Type Description Responsible Party
Recycled Content Number Percent of the item's content that is recycled. Shared
Pre-Consumer Recycled Content Number Percent of the item's content that is pre-consumer recycled. Shared
Post-Industrial Recycled Content Number Percent of the item's content that is post-industrial recycled. Shared
Post-Consumer Recycled Content Number Percent of the item's content that is post-consumer recycled. Shared
Manufacturer Location Text Location of item's manufacturer. Shared
Item is New Yes/No Is the item new Shared

Omniclass Number

Design components used to generate the virtual model must be associated with an Omniclass Number and Omniclass Title. This allows for organization and understanding of design intent. This effort occurs in all design and construction phases. Within a Revit environment, it can be addressed in the family. The family templates generated by the GSA have this information already, however, if the predetermined information is not accurate to the component, it is the responsibility of either AE or GC (based on LOD) to be corrected.

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