What is the function of a parapet wall?

A parapet wall serves a crucial function in preventing the spread of fire, particularly in buildings where the risk of fire from adjacent structures is a concern. By extending above the roofline, the parapet creates a barrier that can help contain flames and hot gasses, effectively slowing the potential for fire to spread to neighboring buildings or different parts of the structure itself. This is especially important in urban areas where buildings are in close proximity to one another.

While parapet walls can also be designed for aesthetic purposes and support roofing materials, their primary function as a fire barrier is a key consideration in building codes and safety regulations. The design and height of a parapet wall may vary based on the specific requirements for fire safety, making it an integral part of building design for both functionality and compliance with fire prevention measures.