Compaction standards of subgrade in Germany
| Superstructure | Subgrade surface | Protective layer | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Ev2/MPa | Evd/MPa | Granular mixture | K | Specified thickness for areas with different degrees of frost heave/cm | Ev2/MPa | Evd/MPa | |||
| I | II | III | |||||||
| Ballasted tracks | 120 | 50 | KG1 or KG2 | 1.00 | 70 | 70 | 70 | 80 | 40/35 |
| Ballastless tracks | 120 | 50 | KG2 | 1.00 | 40 | 40 | 40 | 60 | 35/30 |
| Superstructure | Subgrade surface | Protective layer | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Granular mixture | Specified thickness for areas with different degrees of frost heave/cm | ||||||||
| I | II | III | |||||||
| Ballasted tracks | 120 | 50 | KG1 or KG2 | 1.00 | 70 | 70 | 70 | 80 | 40/35 |
| Ballastless tracks | 120 | 50 | KG2 | 1.00 | 40 | 40 | 40 | 60 | 35/30 |
Source(s): Authors’ own work
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