What is the maximum height of the side firewall of an R-3 zoned property with firewalls on the rear and side?

In R-3 zoned properties, which typically include residential dwellings, firewalls serve an important role in fire safety by preventing the spread of fire between structures. The building code stipulates specific regulations regarding the height of side firewalls, particularly depending on the number of stories of the structure.

The maximum height of the side firewall being determined as two storeys reflects the guidelines set for such zones. The rationale behind allowing a firewall to extend up to two storeys is based on risk mitigation for fire spread in adjacent properties, while still accommodating the need for residential building design and compliance with safety regulations. This height is specifically crafted to maintain a balance between safety and the functional use of the space within residential neighborhoods.

In relation to the other choices, allowing a height exceeding two storeys could pose increased risks or complicate fire management strategies, which is why the limits exist. Therefore, the designation of two storeys is the most appropriate and conforms to the established building regulations in an R-3 zoning context.