Building data platform with graph projections

A method comprising:

• retrieving, by a processing circuit, projection rules for generating a building graph projection;
• retrieving, by the processing circuit, a plurality of entities representing elements of a building and a plurality of relationships between the plurality of entities representing relationships between the plurality of entities;
• constructing, by the processing circuit, the building graph projection including a plurality of nodes and a plurality of edges based on the plurality of entities, the plurality of relationships, and the projection rules;
• and
• performing, by the processing circuit, one or more operations based on the building graph projection.

One or more memory devices having instructions thereon, that, when executed by one or more processors, cause the one or more processors to:

• retrieve projection rules for generating a building graph projection, wherein the building graph projection is a digital twin;
• retrieve a plurality of entities representing elements of a building and a plurality of relationships between the plurality of entities representing relationships between the plurality of entities;
• construct the building graph projection including a plurality of nodes and a plurality of edges based on the plurality of entities, the plurality of relationships, and the projection rules;
• and
• perform one or more operations based on the building graph projection.