| Specimen Group | Type of material | Screw Diameter (mm) | Penetration depth (mm) | Sample size | Withdrawal resistance per penetration depth (N/mm) | |
|---|---|---|---|---|---|---|
| Average | CoV | |||||
| Solid wood_D6.5 | Solid wood | 6.5 | 24 | 30 | 179.9 | 0.20 |
| CLT_D6.5 | CLT | 29.4 | 30 | 167.7 | 0.13 | |
| Plywood_D6.5 | Plywood | 24 | 30 | 226.1 | 0.07 | |
| Solid wood_D8.0 | Solid wood | 8.0 | 24 | 32 | 186.9 | 0.19 |
| CLT_D8.0 | CLT | 58.5 | 46 | 232.1 | 0.17 | |
| Plywood_D8.0 | Plywood | 24 | 3 | 254.2 | 0.07 | |