What is the minimum distance that combustibles must be removed from a primary fire boundary?

The minimum distance that combustibles must be removed from a primary fire boundary is 12 inches. This requirement helps to prevent the spread of fire and enhances safety by maintaining a buffer zone around critical structures. The 12-inch distance is significant as it allows for adequate clearance to reduce the risk of ignition from radiant heat, flames, or flying embers, ensuring that combustibles do not come into contact with potential sources of ignition. By adhering to this guideline, hazard mitigation is prioritized, which is a vital aspect of fire safety protocols in various settings, particularly in environments where fire risks are elevated.