Enhanced Fujita scale damage indicators and degrees of damage, chapter 31

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C-6 Sheds, Fences or Lawn Furniture (C-SFLF)

Typical Construction:

Shed

Single storey and less than 12 m²
Wood, metal and/or plastic construction
Metal, wood, plastic or shingle roof
May have wood, metal or vinyl siding
May have one or more windows
May be unanchored or weakly anchored

Wood fence

Wood rails, panels and posts (sunk into post holes)

Lawn Furniture

Light wood, metal and/or plastic construction intended for outdoor use

Notes:

Increase toward upper-bound wind speed for large and/or well-anchored sheds

Table 31. Degree of Damage (DOD) for Expected (EXP), Lower Bound (LB) and Upper Bound (UB)
DOD	Damage Description	EXP*	LB*	UB*
1	Garden shed overturned, wood fence blown down, lawn furniture blown around	90	70	110
2	Garden shed rolled or carried through the air less than 10 m, lawn furniture carried through air	135	110	160
3	Garden shed carried through air 10 m or more	180	150	210

*All wind speeds in km/h

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Date modified:: 2014-05-07