What are the flame spread ratings required for plastic outdoor trash cans near buildings?

Plastic outdoor trash cans located near buildings must meet specific flame spread ratings to minimize fire hazards. According to building safety codes including the International Building Code (IBC) and NFPA standards, these containers typically require a Class C rating or better when tested under ASTM E84 (Standard Test Method for Surface Burning Characteristics of Building Materials).

The ASTM E84 test measures how quickly flames spread across a material's surface, with ratings classified as:

- Class A: 0-25 flame spread index

- Class B: 26-75 flame spread index

- Class C: 76-200 flame spread index

Most municipalities require plastic trash cans near structures to achieve at least Class C rating (76-200 FSI). Some jurisdictions near high-risk areas may mandate Class B ratings. The smoke developed index should not exceed 450 for any class.

Manufacturers typically use fire-retardant additives in plastic compounds to meet these requirements. Regular inspection and maintenance are crucial as UV exposure and weathering can degrade fire-resistant properties over time. Always consult local fire codes for specific requirements in your area, as regulations may vary by jurisdiction. Proper compliance helps prevent fire propagation from trash cans to nearby structures.