VI | V | IV | III | II | I | Station No. Parameters | |
344.40 | 214.40 | 265.28 | 300.82 | 269 | 279.90 | UCS (MPA) | |
39.1 | 72.1 | 78.7 | 52.3 | 72.1 | 79.34 | RQD (%) | |
18.6 | 25.8 | 13 | 21.5 | 19.4 | 13.3 | Joint Spacing (cm) | |
>20 | >20 | >20 | >20 | >20 | >20 | Joint Persistence | Condition of discontinuities |
1.5 | 2.1 | 2.6 | 2.25 | 2.6 | 3 | Aperture (mm) | |
3 | 5 | 5 | 5 | 7 | 7 | JRC | |
Clean | Hard fill < 5 mm | Hard fill < 5 mm | Soft fill < 5 mm | Soft fill < 5 mm | Hard fill < 5 mm | Infilling | |
W2 | W2 | W2-W3 | W2 | W2-W3 | W3 | Weathering | |
Dry | Dry | Dry | Dry | Dry | Dry | Ground Water | |
59 | 61 | 66 | 64 | 62 | 68 | Total RMR | |
III | II | II | II | II | II | Class Number | |
Fair Rock | Good Rock | Good Rock | Good Rock | Good Rock | Good Rock | Rock Mass Quality | |
Andesite | Andesite | Andesite | Andesite | Andesite | Granite | Rock Type | |
North Abutment | South Abutment | Abutments |