| Wind Speed and Resulting Force on a Flat Vertical Surface | |||||
| Pressure | Pressure | ||||
| Beau- | Km | Pounds | Pounds | ||
| fort | per | per Square | per Square | ||
| MPH | Scale | Hour | Foot | Metre | Kg/m2 |
| 1 | 1 | 1.6 | 0.004 | 0.04 | 0.02 |
| 2 | " | 3.2 | 0.016 | 0.17 | 0.08 |
| 3 | " | 4.8 | 0.036 | 0.39 | 0.18 |
| 4 | 2 | 6.4 | 0.064 | 0.69 | 0.31 |
| 5 | " | 8.1 | 0.1 | 1.08 | 0.49 |
| 6 | " | 9.7 | 0.144 | 1.55 | 0.70 |
| 7 | " | 11.3 | 0.196 | 2.11 | 0.96 |
| 8 | 3 | 12.9 | 0.256 | 2.75 | 1.25 |
| 9 | " | 14.5 | 0.324 | 3.49 | 1.58 |
| 10 | " | 16.1 | 0.4 | 4.30 | 1.96 |
| 11 | " | 17.7 | 0.484 | 5.21 | 2.37 |
| 12 | 4 | 19.3 | 0.576 | 6.20 | 2.82 |
| 13 | " | 20.9 | 0.676 | 7.27 | 3.31 |
| 14 | " | 22.5 | 0.784 | 8.44 | 3.83 |
| 15 | " | 24.2 | 0.9 | 9.68 | 4.40 |
| 16 | " | 25.8 | 1.024 | 11.02 | 5.01 |
| 17 | " | 27.4 | 1.156 | 12.44 | 5.65 |
| 18 | " | 29.0 | 1.296 | 13.94 | 6.34 |
| 19 | 5 | 30.6 | 1.444 | 15.54 | 7.06 |
| 20 | " | 32.2 | 1.6 | 17.22 | 7.83 |
| 25 | 6 | 40.3 | 2.5 | 26.90 | 12.23 |
| 30 | " | 48.3 | 3.6 | 38.74 | 17.61 |
| 32 | 7 | 51.5 | 4.096 | 44.07 | 20.03 |
| 35 | " | 56.4 | 4.9 | 52.72 | 23.97 |
| 39 | 8 | 62.8 | 6.084 | 65.46 | 29.76 |
| 40 | " | 64.4 | 6.4 | 68.86 | 31.30 |
| 45 | " | 72.5 | 8.1 | 87.16 | 39.62 |
| 47 | 9 | 75.7 | 8.836 | 95.08 | 43.22 |
| 50 | " | 80.5 | 10 | 107.60 | 48.91 |
| 55 | 10 | 88.6 | 12.1 | 130.20 | 59.18 |
| 60 | " | 96.6 | 14.4 | 154.94 | 70.43 |
| 64 | 11 | 103.0 | 16.384 | 176.29 | 80.13 |
| 65 | " | 104.7 | 16.9 | 181.84 | 82.66 |
| 70 | " | 112.7 | 19.6 | 210.90 | 95.86 |
| 75 | 12 | 120.8 | 22.5 | 242.10 | 110.05 |
| 80 | " | 128.8 | 25.6 | 275.46 | 125.21 |
| 85 | " | 136.9 | 28.9 | 310.96 | 141.35 |
| 90 | " | 144.9 | 32.4 | 348.62 | 158.47 |
| 95 | " | 153.0 | 36.1 | 388.44 | 176.56 |
| 100 | " | 161.0 | 40 | 430.40 | 195.64 |