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Dimensions of granite SCB specimens.
| Dimensions | Dimensions in present research work according to ISRM recommended values |
|---|---|
| Diameter (D) | 100 mm (larger than 109-grain size or 76 mm) |
| Thickness (B) | 50 mm (larger than 4D or 30 mm) |
| Crack length (αο) | α/R = 0.5 (0.4 ≤ α ≤ 0.6) |
| Span length (S) | S/2R = 0.6 (0.5 ≤ S/2R ≤ 0.8) |
