What are the fire-rating classifications for cedar wood outdoor garbage bins?

Cedar wood outdoor garbage bins are subject to specific fire-rating classifications that determine their safety for use in various environments. The primary standard governing these classifications is ASTM E84, which measures the surface burning characteristics of building materials. Under this standard, cedar wood typically achieves a Class C rating, indicating it has moderate flame spread and smoke development properties. The flame spread index for untreated cedar generally ranges between 70-145, while the smoke developed index usually falls below 450. For enhanced fire resistance, cedar bins can be treated with fire-retardant chemicals that may improve their classification to Class B or even Class A. These treatments work by creating a protective char layer when exposed to flames, which slows combustion. Municipal regulations often require specific fire ratings for outdoor waste containers, particularly in wildfire-prone areas or commercial settings. When selecting cedar wood garbage bins, verify their exact fire rating certification and consider additional protective measures like proper clearance from structures and regular maintenance to remove combustible debris around the enclosure.