Released: March 2023

The Urban Information Modelling (UIM) Schema is not currently open source but we are actively discussing what and how we should open source.

UIM Entities

Areas

• Plan
• District
• Block
• Plot
• Footprint

Elements

• Landscape
• Streetscape
• Mobility
• Infrastructure

Containers

• City
• Phase
• Building

Public Roadmap

Not all of our roadmap is public, but we are currently working on these UIM Entities in the upcoming releases.

Entities

• Architecture
• Constraint
• Façade
• Floor
• Massing

Urban Metrics

Some of the urban metrics we use are explained in great detail in the two documents (below).

Some key planning area metrics:

• FSI - Floor Space Index = GFA / Planning Area
• GSI - Ground Space Index = Building Footprint / Planning Area
• OSR - Open Space Ratio = (1-GSI)/FSI
• MXI - Mixed Use Index = Residential GFA / Total GFA

We also report on:

• Total GFA - Gross Floor Area
• Total NFA - Net Floor Area
• Total SFA - Sellable Floor Area
• Total GFA Per Programme and % distribution
• Total NFA Per Programme and % distribution
• Total SFA Per Programme and % distribution
• Total Areas of sub-Planning areas
• FSI per GFA, NFA, SFA
• GSI per sub-area of a planning area
• OSR based on GFA
• Tare ratios per planning area
• Coverage ratios per planning area
• and many others

UIM.json

The UIM.json file can be exported and used however you want. In the current release we do not export serialized geometry. Currently, all UIM Data is linked to the RhinoDoc UUID which is linked to an individual geometry within Rhino.

The UIM.json file is essentially a UIM City object which includes these sub-objects:

• meta — UIM Schema information
• project — project meta data
• plans — list of objects
• districts — list of objects
• blocks — list of objects
• plots — list of objects
• footprints — list of objects (building data)
• mobility — list of objects
• infrastructures — list of objects
• landscapes — list of objects
• streetscapes — list of objects

The new version 2.0.0 will only work with SIMO version 2.0.0.0 onwards because we changed the json formatting.

<aside> ❗ We will provide geometry serialization in a future release.

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<aside> ❗ If you want to contribute to UIM as an open source standard, please contact us!

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<aside> ❗ If you are interested in using UIM for your software or product development, data classification, data transformations, machine learning or other, please contact us.

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