Final answer:
Combustible materials arranged to facilitate the spread of fire in an occupancy include cotton waste, rags, paper, fluids, excelsior, and waste film. These materials can be made more resistant to fire through the application of fire-treatments.
Step-by-step explanation:
Materials that are arranged to spread fire from its point of origin to other areas of an occupancy are referred to as combustible materials and can include a variety of substances such as cotton waste, rags, paper, fluids, excelsior, waste film, and others. These materials serve as fuel for a fire and facilitate its spread by providing a source that can easily ignite and maintain the burning process. To counteract the risks posed by these materials, fire treatments can be applied, especially in fabrics used in public spaces, which need to pass the NFPA 701 Test as per Federal regulations in the United States. Fire refers to the reduced fire hazard of materials that will burn under certain conditions but have been chemically treated to resist ignition and slow down the spread of fire.