The provisions contained in this appendix are not mandatory unless specifically referenced in the adopting ordinance.

    Where adopted, this appendix is to be used in place of Table 502.1 to determine the fire hazard severity.

    1. A.Subdivision Design Points

      1. Ingress/Egress
      Two or more primary roads1____
      One road3____
      One-way road in, one-way road out5____
      2. Width of Primary Road
      20 feet (6096 mm) or more1____
      Less than 20 feet (6096 mm)3____
      3. Accessibility
      Road grade 5% or less1____
      Road grade more than 5%3____
      4. Secondary Road Terminus
      Loop roads, cul-de-sacs with an outside turning radius of 45 feet (13 716 mm) or greater1____
      Cul-de-sac turnaround
      Dead-end roads 200 feet (60 960 mm) or less in length3____
      Dead-end roads greater than 200 feet (60 960 mm) in length5____
      5. Street Signs
      Not present3____
    2. B.Vegetation (IWUIC Definitions)

      1. Fuel Types
      2. Defensible Space
      70% or more of site1____
      30% or more, but less than 70% of site10____
      Less than 30% of site20____
    3. C.Topography

      8% or less1____
      More than 8%, but less than 20%4____
      20% or more, but less than 30%7____
      30% or more10____
    4. D.Roofing Material

      Class A Fire Rated1____
      Class B Fire Rated5____
      Class C Fire Rated10____
    5. E.Fire Protection—Water Source

      500 GPM (1892.5 L/min) hydrant within 1,000 feet (304.8 m)1____
      Hydrant farther than 1,000 feet (304.8 m) or draft site2____
      Water source 20 min. or less, round trip5____
      Water source farther than 20 min., and 45 min. or less, round trip7____
      Water source farther than 45 min., round trip10____
    6. F.Existing Building Construction Materials

      Noncombustible siding/deck1____
      Noncombustible siding/combustible deck5____
      Combustible siding and deck10____
    7. G.Utilities (gas and/or electric)

      All underground utilities1____
      One underground, one above ground3____
      All above ground5____
    8. Total for Subdivision

      Moderate Hazard40–59
      High Hazard60–74
      Extreme Hazard75+