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Design Criteria
Residential Design Criteria*
*Design criteria for buildings constructed in accordance with the Virginia Residential Code. For all other buildings, see Chapter 16 of the Virginia Construction Code (PDF).
| Criterion |
Specification |
|---|---|
| Ground snow load |
15 |
| Wind speed |
90 |
| Seismic design category |
A |
| Weathering |
Severe |
| Frost line depth |
12 inches |
| Termite |
Moderate to heavy |
| Winter design temperature |
22ºF |
| Ice barrier underlayment required |
No |
| Flood hazards |
May 2, 1977 |
| Air freezing index |
150 |
| Mean annual temperature |
59ºF |
*Design criteria for buildings constructed in accordance with the Virginia Residential Code. For all other buildings, see Chapter 16 of the Virginia Construction Code (PDF).