4.4.3.1 Quantities on Occurrences

Any specialization of object can be related to multiple quantity set occurrences. A quantity set contains multiple quantity occurrences. The data type of quantity occurrence are count, length, area, volume, weight, time, and combination of quantity occurrences.

Figure 13 illustrates an instance diagram.

Quantities on OccurrencesIfcObjectIfcRelDefinesByPropertiesIfcElementQuantityIfcLabelIfcPhysicalSimpleQuantityIfcLabel

Figure 13 — Quantities on Occurrences


Construction Operations

This concept is used by entities for exchanges as shown.

IfcBuildingStoreyO
O
O
O
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
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R
R
R
R
R
R
R
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R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
IfcSpace-
-
-
-
-
-
O
O
O
O
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R

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