Design Information

Commonwealth Adopts New Building Code

The Commonwealth of Virginia has adopted a new building code which became effective on September 4, 2018.  Approximately every three years this process occurs through the legislative process. The 2015 Uniform Statewide Building Code is the prevailing building code for the Commonwealth, references, adopts and amends the 2015 International Codes.  The uniform statewide building code is the building code used throughout Virginia and supersedes all local building codes.  The 2015 USBC can be found at the following link: 

As of September 4, 2018, Shenandoah County is enforcing the 2015 edition of the International Codes with the 2015 Virginia Uniform Statewide Building Code amendments.  If you wish to continue to use the 2012 codes, please communicate this to our Permit Technicians at time of permit application.  You will be able to use the 2012 code until September 4, 2019.


Frost depth is 24 inches from grade to bottom of footing

Ground snow load is 40 p.s.f.

Wind speed is 115 m.p.h.

Seismic design category is B

Severe weathering

Moderate to heavy termite damage

Winter design temperature, 16 degrees

Mean annual temperature, 50 degrees

Air freezing index, 0-1000

Ice barrier underlayment requirement, Yes

Additional information can be obtained from the Plans Examiner at 540-459-6185.