Design Standards

Useful Information

   
Design Wind Speed 90 mph, 3 second burst
Frost Depth 24 inches below finish grade
Ground Snow Load 30 psf
Seismic Design Category B
Winter Design Temperature 16 degrees F
Termite Moderate/Heavy
Guardrail Height Minimum 36 inches
Handrail Height 34 - 38 inches
Residential Stairs Maximum riser: 8 1/4 inches
Maximum tread: 9 inches