Defined in File Ifc4.h
IfcQuantityCount: public Ifc4::IfcPhysicalSimpleQuantity¶
IfcQuantityCount is a physical quantity that defines a derived count measure to provide an element’s physical property. It is normally derived from the physical properties of the element under the specific measure rules given by a method of measurement.
EXAMPLE An radiator may be measured according to its number of coils. The actual counting method depends on the method of measurement used.
HISTORY New entity in IFC2x. It replaces the calcXxx attributes used in previous IFC Releases.
Count measure value of this quantity.
Whether the optional attribute Formula is defined for this IfcQuantityCount.
A formula by which the quantity has been calculated. It can be assigned in addition to the actual value of the quantity. Formulas could be mathematic calculations (like width x height), database links, or a combination. The formula is for informational purposes only.
IFC2x4 CHANGE Attribute added to the end of the attribute list.