CLIMATIC AND GEOGRAPHIC DESIGN DATA

Ground Snow Load Wind Speed Seismic Design Catagory Weathering Frost Depth Line Termites Decay Winter Design Temp.
30" 35" See note "a" 90 mph  -3 sec burst "A" Severe 42- inches Moderate to Heavy Slight to Moderate 0º F

Note "a''  30" at elevations under 1700' in elevation;  35" at all locations over 1700' in elevation

 

SIMPLIFIED INSULATION REQUIREMENTS

Minimum U-Factor

Minimum Thermal Insulation R-Value [hrxft2xºF / BTU]

Windows & Doors Skylights Roof / Ceiling Wood Framed Walls Floors over non-conditioned space Slab Perimeter Basement Walls Crawl Spaces
0.35 0.50 R-49 R-21 R-21 R-13 /4-feet R-11 R-20