Area Elements

The BIM model will provide:

• External and Internal Gross area elements for each floor (in GSA BIM Guide terms this is the "Full Floor Space").
• Room or Area elements for any area over 9 sq ft or 1 sq M.
• Area elements follow the ANSI/BOMA rules for their outlines.

Room Elements

The BIM model will:

• Number each room, vertical penetration or service area with room numbers appropriate for wayfinding.
• Tag vertical penetrations and service areas with the proper vertical or service area Room Category and Type.
• Tag rooms with the proper occupancy Category and Type.
• Tag rooms with the proper hierarchical Organization ID or Division and Department assignment (if known).

The commissioning agent or facility management department will:

• Verify that the Room Category and Type information is populated with the categories for proper space categorization (for example, for A21 chargeback if the organization is a university).
• Verify that the organizational ID or Division and Department validating tables are populated with current organizational codes.

With the information above, you can flow BIM models directly into the Archibus Space Inventory & Performance, Personnel & Occupancy and Chargeback applications. You can also use the backbone space information in all other Archibus applications, from hotelling and room reservations to move management and maintenance.

The information above is the starting point. After hand-over, facility management becomes the author of record for room category, type, and department assignment information.

Space Specifications for US Government Projects

Projects developed for the US Government will instead follow the GSA BIM Guide recommendations for categorizing space:

Field	Description
Name	Rather than Category and Type, the model will use space Names. The GSA publishes an approved list of names that map to space use types (GSA STAR Space Type).
Occupant Organization Name	Rather than Organization ID, the SA uses the Occupant Organization Name.
Zones	The GSA BIM Guide also specifies that the BIM model identify area elements for any zone (e.g. security, HVAC, electrical, fire). You may wish to decide if you have good use cases for this data. If you are implementing an Archibus application like Emergency Preparedness, then these will be of direct use. If you have no identified use for them, you may wish to omit this requirement