Building Design Criteria

Required Design Criteria for Construction

When designing structures in the region, the following criteria must be adhered to for safety and compliance:

  • Frost Depth: 48 inches
  • Elevation: Approximately 2400 feet
  • Roof Snow Load: 21 pounds per square foot (psf)
  • Ground Snow Load: 30 psf
  • Ultimate Design Wind Speed: 115 miles per hour (mph), with Surface Roughness C
  • Seismic Design Category: A
  • Air Freezing Index: 4000
  • Mean Annual Temperature: 40°F
  • Ice Barrier Underlayment Required: Yes
  • Winter Design Temperature: Negative 21°F

Geotechnical Requirements

For footing calculations, the presumptive load-bearing values should align with those outlined in IBC Table 1806.2. If vertical pressure values exceeding 1500 psf are used, a geotechnical report must be provided to justify these values.

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