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.
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Figure 13 — Quantities on Occurrences |
This concept is used by entities for exchanges as shown.
IfcBuildingStorey | 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 |
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 |