The following load criteria are based on the 2003 Virginia Uniform Statewide
Building Code (PDF). For more information, refer to Chapter 16 of the
2003 International Building Code and the 2005 ASCE-7, and Chapter 3
of the 2003 International Residential Code.
| Ground snow load |
25 psf
|
1.25 kN/m2
|
| Wind speed (3 sec. gust method) |
90 mph
|
40 m/s
|
| Frost depth |
24 in.
|
600 mm
|
| Earthquake spectral response acceleration |
at short periods
|
0.16
|
|
at 1 sec. period
|
0.053
|
|
| Residential Seismic Design Category |
B
|
|
| Weathering probability for concrete |
severe
|
|
| Termite infestation probability |
moderate to heavy
|
|
| Decay probability |
slight to moderate
|
|
| Ice shield underlayment required | yes | |
| Flood hazards (date of entry into National Flood Insurance Program) | 3/5/1990 | |
| Winter Design Temperature | 15°F | -9°C |
| Air freezing index | ≤1500°F | ≤815°C |
| Mean annual temperature | 50°F | 10°C |