| 名称 | ifc subgrade |
| 领域 | IFCRAIL |
| URL | http://cbims.org.cn/allscope/IFCRAIL-IfcSubgrade |
| 分类编码 | IfcSubgrade |
| 父类 | ifc subgrade structure elementifc rootifc productifc spatial elementifc objectifc object definitionifc spatial structure elementifc civil structure element |
| 子类 | |
| 等价类 | IFCROAD:ifc subgrade |