Local Design Load Criteria


The following load criteria are based on Chapter 16 of the Virginia Construction Code, the 2010 ASCE-7 and Chapter 3 of the 2012 Virginia Residential Code.

Type Criteria
Ground snow load 25 psf 1.25 kN/m2
Wind:    

Basic
Ultimate (Vult)

90 mph
115 mph

40 m/s
51 m/s

Frost depth
24 in.
600 mm
Earthquake spectral response acceleration at short periods: 0.16
at 1 second 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 17°F -9°C
Air freezing index ?1500°F ?815°C
Mean annual temperature 50°F 10°C

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