Final answer:
Aircraft hangar exterior walls located less than 30 feet from lot lines or a public way are typically required to have a fire-resistance rating of not less than 2 hours according to the International Building Code. Local building or fire codes should be consulted for the specific requirements.
Step-by-step explanation:
The question pertains to the required fire-resistance rating for aircraft hangar exterior walls that are located within a specific distance from lot lines or a public way, which is a concern in the field of fire safety engineering and building codes regulation. According to the International Building Code (IBC), such walls typically must have a fire-resistance rating of not less than 2 hours when located less than 30 feet from lot lines or a public way. However, it is essential to consult the most current local building codes or fire codes as these requirements can vary based on jurisdiction and the specific type of hangar construction. The fire-resistance rating is an important aspect of construction that contributes to the safety of the structure by preventing the spread of fire and providing occupants and firefighters valuable time for evacuation and response, respectively.