Rating Fire Danger by the Multiple Basic Index System

Total fire danger is defined as the potential for damage by fire in any area. Under the multiple basic index concept of rating fire danger, total fire danger is broken down into its component parts and the determinants that control them. Relationships between determinants and components are established and from these basic indexes are derived. The end product, or danger rating, is a guide to action in fire control or fire use. The relation between selected basic indexes and the problem of concern is determined, and these relationships are combined in a logical manner to form the fire danger rating system. Advantages of the multiple index system include its flexibility, universal application, and ease with which new information can be incorporated without altering the basic structure or operation of the system.