According to the 1968 Building Code, how many hours of fire-proof protection is a fire-wall rated for?

The 1968 Building Code stipulates that a fire wall is rated for 4 hours of fire-proof protection. This is significant because fire walls are critical structural components designed to prevent the spread of fire between different sections of a building. The four-hour rating indicates that the wall can withstand fire exposure for that duration, providing essential time for occupants to evacuate and for firefighters to respond to the emergency. This rating also influences building design and safety protocols, ensuring that fire walls are constructed with materials and engineering methods that meet this requirement. The duration of fire resistance is crucial in mitigating damage and protecting lives during a fire incident.