Enhanced Fujita scale damage indicators and degrees of damage, chapter 6

Table of contents

Next page

Motels (M)

Typical Construction:

Less than or equal to four storeys
Facility made up of one or more multi-storey, rectangular buildings
Flat, gable, hip or mansard roof
Asphalt shingles, tile, slate or built up roof (BUR) roof covering
Plywood/OSB roof decking, wood or metal prefabricated roof trusses
Wood floor diaphragms, wood or metal stud walls
Stucco, EIFS, wood, metal or brick veneer wall cladding
Canopy over driveway at entrance; exterior walkways or balconies

Notes:

With hip roof, increase toward bound wind speed for Degree of Damage 4 (DODx) and DOD6

Table 6. Degree of Damage (DOD) for Expected (EXP), Lower Bound (LB) and Upper Bound (UB)
DOD	Damage Description	EXP	LB	UB
1	Threshold of visible damage	105	85	135
2	Loss of roof covering (up to 20%)	130	110	160
3	Broken windows or patio doors	145	120	170
4	Uplift of roof decking; significant loss of roof covering (more than 20%); loss of EIFS wall cladding	155	130	185
5	Uplift or collapse of canopy over driveway	160	130	190
6	Uplift or collapse of roof structure leaving most walls standing	200	165	230
7	Collapse of top story exterior walls	220	195	250
8	Collapse of most top story walls	230	205	260
9	Collapse of top two floors of three or more stories	275	230	300
10	Total destruction of entire building	305	260	350

*All wind speeds in km/h

Table of contents

Next page

Page details

Date modified:: 2014-05-07