| 名称 | ifc opening standard case |
| 领域 | IFCROAD |
| URL | http://cbims.org.cn/allscope/IFCROAD-IfcOpeningStandardCase |
| 分类编码 | IfcOpeningStandardCase |
| 父类 | ifc rootifc feature element subtractionifc productifc objectifc feature elementifc opening elementifc elementifc object definition |
| 子类 | |
| 等价类 | IFCRAIL:ifc opening standard case |