Design Criteria:
The following load criteria are based on Chapter 16 of the 2018 Virginia Construction Code, the 2005 ASCE-7 and Chapter 3 of the 2018 Virginia Residential Code.
| Type | Amount |
| GROUND SNOW LOAD | 25 PSF |
| WIND SPEED | 115 miles per hour three second gust 89 miles per hour fastest wind speed |
| EARTHQUAKE SPECTRAL RESPONSE | .16 at short periods |
| RESIDENTIAL SEISMIC DESIGN CATEGORY | B |
| WEATHERING PROBABILITY FOR CONCRETED | Severe |
| TERMITE INFESTATION PROBABILITY | Moderate to Heavy |
| DECAY PROBABILITY | Moderate |
| ICE/WATER SHIELD REQUIRED | Yes |
| WINTER DESIGN TEMPERATURE | 17 degrees Fahrenheit |
| AIR FREEZING INDEX | LESS THAN OR EQUAL TO 1500 DEGREES °F |
| FROST DEPTH | 24 inches |
| MEAN ANNUAL TEMPERATURE | 50 degrees Fahrenheit |