Stability factors γ H/s u for undrained failure of slopes
| B/H | Mechanism | Slope inclination angle β | ||||
|---|---|---|---|---|---|---|
| 30° | 45° | 60° | 75° | 90° | ||
| 0·5 | Wedgea | 42·85 | 28·79 | 21·88 | 17·87 | 15·36 |
| M-Cb | 27·15 | 18·07 | 13·54 | 10·86 | 9·17 | |
| T-Cc | 25·27 | 16·67 | 12·39 | 9·93 | 8·48 | |
| 0·6 | Wedgea | 38·58 | 25·81 | 19·50 | 15·79 | 13·44 |
| M-Cb | 24·98 | 16·56 | 12·34 | 9·80 | 8·14 | |
| T-Cc | 23·02 | 15·10 | 11·13 | 8·72 | 7·27 | |
| 0·8 | Wedgea | 33·35 | 22·16 | 16·57 | 13·24 | 11·07 |
| M-Cb | 22·31 | 14·71 | 10·87 | 8·54 | 6·97 | |
| T-Cc | 20·23 | 13·18 | 9·58 | 7·38 | 5·89 | |
| 1 | Wedgea | 30·32 | 20·05 | 14·88 | 11·76 | 9·70 |
| M-Cb | 20·74 | 13·63 | 10·02 | 7·81 | 6·30 | |
| T-Cc | 18·58 | 12·04 | 8·69 | 6·60 | 5·15 | |
| 1·5 | Wedgea | 26·59 | 17·43 | 12·78 | 9·93 | 8·00 |
| M-Cb | 18·71 | 12·23 | 8·92 | 6·88 | 5·46 | |
| T-Cc | 16·42 | 10·57 | 7·54 | 5·62 | 4·25 | |
| 2 | Wedgea | 24·96 | 16·29 | 11·86 | 9·12 | 7·24 |
| M-Cb | 17·72 | 11·55 | 8·39 | 6·43 | 5·07 | |
| T-Cc | 15·36 | 9·84 | 7·00 | 5·19 | 3·84 | |
| 3 | Wedgea | 23·62 | 15·35 | 11·10 | 8·45 | 6·60 |
| M-Cb | 16·75 | 10·89 | 7·88 | 6·00 | 4·69 | |
| T-Cc | 14·31 | 9·13 | 6·47 | 4·77 | 3·48 | |
| 5 | Wedgea | 22·85 | 14·81 | 10·66 | 8·05 | 6·23 |
| M-Cb | 16·00 | 10·38 | 7·48 | 5·67 | 4·40 | |
| T-Cc | 13·49 | 8·60 | 6·06 | 4·44 | 3·23 | |
| 2D | M-Cb | 14·92 | 9·65 | 6·92 | 5·21 | 4·00 |
| T-Cc | 12·24 | 7·78 | 5·46 | 3·97 | 2·88 | |
| Mechanism | Slope inclination angle | |||||
|---|---|---|---|---|---|---|
| 30° | 45° | 60° | 75° | 90° | ||
| 0·5 | Wedge | 42·85 | 28·79 | 21·88 | 17·87 | 15·36 |
| M-C | 27·15 | 18·07 | 13·54 | 10·86 | 9·17 | |
| T-C | 25·27 | 16·67 | 12·39 | 9·93 | 8·48 | |
| 0·6 | Wedge | 38·58 | 25·81 | 19·50 | 15·79 | 13·44 |
| M-C | 24·98 | 16·56 | 12·34 | 9·80 | 8·14 | |
| T-C | 23·02 | 15·10 | 11·13 | 8·72 | 7·27 | |
| 0·8 | Wedge | 33·35 | 22·16 | 16·57 | 13·24 | 11·07 |
| M-C | 22·31 | 14·71 | 10·87 | 8·54 | 6·97 | |
| T-C | 20·23 | 13·18 | 9·58 | 7·38 | 5·89 | |
| 1 | Wedge | 30·32 | 20·05 | 14·88 | 11·76 | 9·70 |
| M-C | 20·74 | 13·63 | 10·02 | 7·81 | 6·30 | |
| T-C | 18·58 | 12·04 | 8·69 | 6·60 | 5·15 | |
| 1·5 | Wedge | 26·59 | 17·43 | 12·78 | 9·93 | 8·00 |
| M-C | 18·71 | 12·23 | 8·92 | 6·88 | 5·46 | |
| T-C | 16·42 | 10·57 | 7·54 | 5·62 | 4·25 | |
| 2 | Wedge | 24·96 | 16·29 | 11·86 | 9·12 | 7·24 |
| M-C | 17·72 | 11·55 | 8·39 | 6·43 | 5·07 | |
| T-C | 15·36 | 9·84 | 7·00 | 5·19 | 3·84 | |
| 3 | Wedge | 23·62 | 15·35 | 11·10 | 8·45 | 6·60 |
| M-C | 16·75 | 10·89 | 7·88 | 6·00 | 4·69 | |
| T-C | 14·31 | 9·13 | 6·47 | 4·77 | 3·48 | |
| 5 | Wedge | 22·85 | 14·81 | 10·66 | 8·05 | 6·23 |
| M-C | 16·00 | 10·38 | 7·48 | 5·67 | 4·40 | |
| T-C | 13·49 | 8·60 | 6·06 | 4·44 | 3·23 | |
| 2D | M-C | 14·92 | 9·65 | 6·92 | 5·21 | 4·00 |
| T-C | 12·24 | 7·78 | 5·46 | 3·97 | 2·88 | |
Wedge mechanism
Right circular cone mechanism and M-C strength envelope
Right circular cone mechanism with tension cut-off strength envelope