Definition from IAI: A zone (IfcZone) is essentially an
aggregation of spaces, partial spaces or other zones. It is a view based
delimited volume for the purpose of analysis and calculation. They cannot
overlap with respect to that analysis, but may overlap otherwise.
NOTE: One of the purposes of a zone is to define a
fire compartmentation. In this case it defines the geometric information about
the fire compartment (through the contained spaces) and information, whether
this compartment is ventilated or sprinkler protected. In addition the fire
risk code and the harard type can be added, the coding is normally defined
within a national fire regulation. All that information is available within the
relevant property sets.
RECOMMENDATION: Is case of a zone denoting a (fire)
compartment, the following types should be used, if applicable, as values of
the ObjectType attribute:
- FireCompartment - a zone of spaces, collected to
represent a single fire compartment.
- ElevatorShaft - a collection of spaces within an
elevator, potentially going through many storeys.
- RisingDuct
- RunningDuct
Additional classifications of the IfcZone, as it may be provided
by a national classification system, can be assigned by using the
IfcRelAssociatesClassification relationship.
HISTORY New entity in IFC Release
1.0
