What is the fire-resistance requirement for walls adjacent to property lines in an aircraft hangar?

The fire-resistance requirement for walls adjacent to property lines in an aircraft hangar is indeed 2 hours. This standard is established to ensure that any fire originating within the hangar does not easily spread to adjacent properties, particularly considering the materials and activities commonly present in aircraft hangars that could intensify a fire.

Aircraft hangars often contain highly flammable materials and equipment, making them a significant fire risk. The 2-hour fire-resistance rating provides a balance between safety and construction feasibility, allowing sufficient time for emergency response teams to arrive and manage a potential fire situation while protecting neighboring properties from heat and smoke exposure. This requirement aligns with building codes that stipulate fire-resistance measures based on occupancy use, ensuring that safety is maintained in the design and construction of commercial buildings such as aircraft hangars.