Brick v1.0.3


  • The Brick class namespace is
  • Classes belong to owl:Class and are arranged into a hierarchy with rdfs:subClassOf
  • Equivalent classes (the members of the classes are the same) are related with the owl:equivalentClass property
  • Definitions given with skos:definition
  • We are eliminating equipment-flavored classes where it makes sense

    • e.g. brick:AHU_Average_Exhaust_Air_Static_Pressure_Sensor is just a Average_Exhaust_Air_Static_Pressure_Sensor that is a point of an AHU.
  • Classes are equivalent to a set of tags.


(Relationships are the Brick term for owl ObjectProperties between instances of classes)

At the surface level, relationship work the same as they did in the original Brick. All the same relationships still exist (where I remembered to define them), and they have their inverses defined using owl:inverseOf.

Domains and ranges are defined in terms of classes. Stating that the rdfs:range of a relationship is of class brick:Equipment means that the object of the relationship should be an instance of the brick:Equipment class.