Table 7.
Withdrawal resistances of lag screws
| Specimen symbol | σw(N/mm) | 5 Percentile(N/mm) | W(N/mm) | Percentage of Wc/Ws* (%) |
| 9.46LL-S9.46LL-C | 255.9165.4 | 199.4118.8 | 99.759.4 | 59.6 |
| 7.79LL-S7.79LL-C | 186.5126.1 | 154.4 83.5 | 77.241.7 | 54.0 |
| 6.27LL-S6.27LL-C | 179.1112.3 | 133.4 76.7 | 66.738.3 | 57.4 |
| 9.46LS-S9.46LS-C | 165.3114.2 | 129.5 76.2 | 64.738.1 | 58.9 |
| 7.79LS-S7.79LS-C | 118.3 86.6 | 83.0 55.0 | 41.527.5 | 66.3 |
| 6.27LS-S6.27LS-C | 106.8 69.9 | 63.6 42.8 | 31.821.4 | 67.3 |
Wc: Allowable withdrawal load for the lag screw installed on the cross section
Ws: Allowable withdrawal load for the lag screw installed on the side grain