Enhanced Fujita scale damage indicators and degrees of damage, chapter 13
Automobile Showrooms (ASR)
Typical Construction:
- Typically one storey with flat roof
- Roof system is BUR or single-ply membrane
- Metal roof deck or plywood panels
- Steel structural framing with open web steel joists
- Metal stud walls with EIFS, stucco or tilt-up panels
- Exterior walls on 2 or 3 sides have large glass windows
| DOD | Damage Description | EXP* | LB* | UB* |
|---|---|---|---|---|
| 1 | Threshold of visible damage | 105 | 75 | 130 |
| 2 | Loss of roof covering (up to 20%) | 130 | 110 | 165 |
| 3 | Broken glass in windows or doors | 140 | 115 | 170 |
| 4 | Uplift of some roof decking; significant loss of roofing material (more than 20%); loss of rooftop HVAC | 165 | 135 | 195 |
| 5 | Cladding stripped off walls | 180 | 150 | 210 |
| 6 | Uplift or collapse of roof structure | 190 | 160 | 225 |
| 7 | Exterior walls collapsed | 205 | 170 | 240 |
| 8 | Complete destruction of all or a large section of the building | 255 | 220 | 290 |
*All wind speeds in km/h
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