Enhanced Fujita scale damage indicators and degrees of damage, chapter 28
C-3 Heritage Churches (C-HC)
Typical Construction:
- Built with bricks and/or stones
- Solidly built roof structure
- May also have one or more bell towers
| DOD | Damage Description | EXP* | LB* | UB* |
|---|---|---|---|---|
| 1 | Threshold of visible damage | 90 | 70 | 110 |
| 2 | Loss of roof covering material (up to 20%) | 115 | 90 | 140 |
| 3 | Loss of significant roof covering material (more than 20%); light damage on the bell-tower summit | 145 | 115 | 175 |
| 4 | More than 50% of roof structure removed; collapse of the bell-tower summit (spire); walls remain standing | 185 | 150 | 220 |
| 5 | More than 80% of roof structure removed; walls partly collapsed; bell-tower structure damaged | 225 | 190 | 260 |
| 6 | Roof structure totally removed and blown away; many walls collapsed; bell-tower structure mostly destroyed | 270 | 230 | 310 |
| 7 | Complete destruction of building | 315 | 275 | 355 |
*All wind speeds in km/h