ASCE7-02
Wind Speed:
Exposure:
| A | Large city centers with at least 50% of the building having a height in excess of 70 feet. (ASCE7-98 only) |
| B | Urban and suburban areas, wooded area, or other terrain with numerous closely spaced obstructions having the size of single-family dwellings or larger. |
| C | Flat open country, grasslands and shorelines in hurricane prone
regions. |
| D | Flat, unobstructed areas exposed to wind flowing over open water (excluding shorelines in hurricane prone regions) |
Building Categories:
Building categories listed below are based upon the ASCE Standard. Building categories for the International Building Codes are referenced in parentheses (IBC).
| I |
Buildings that represent a low hazard to human life in the event of
failure. (IBC IV) |
| II | All buildings except those listed in categories I, III, IV. (IBC
I) Ex: Most commercial buildings Most Residential Buildings |
| III | Buildings that represent a substantial hazard to human life in the
event of failure. (IBC II) Ex: Buildings where more than 300 people congregate in one area. |
| IV | Buildings containing sufficient quantities of toxic, explosive or
other hazardous substances to be dangerous to the public if released:
(IBC III) Ex: Petrochemical Facilities Buildings designated as essential facilities. Ex: Hospitals Fire, rescue and police stations Emergency shelters Communication centers and related structures Aviation control towers |
Mean Roof Height:
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