IFC (IFC4X3_ADD1) development


Semantic definition

Total UA curves, UA - air and water velocities, UA = [(C1 * AirFlowRate\^0.8)\^-1 + (C2 * WaterFlowRate\^0.8)\^-1]\^-1. Note: as two variables are used, DefiningValues and DefinedValues are null, and values are stored in IfcTable in the following order: AirFlowRate,WaterFlowRate,UA. The IfcTable is related to IfcPropertyTableValue using IfcMetric and IfcPropertyConstraintRelationship.

Referenced in
Table 25894bf5-db02-48a7-b7a9-8c6b777e1e27

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