What is the minimum vertical firewall projection according to PD 1096?

The minimum vertical firewall projection according to PD 1096 is established to ensure effective fire safety measures are in place within buildings. A firewall functions to prevent the spread of fire between different sections of a structure, and its height is particularly important in maintaining its integrity and effectiveness in case of a fire.

The specification of a vertical firewall projection of 400 mm is derived from the need to provide a sufficient barrier that extends above the roofline or any adjacent structures. This height is important to mitigate the potential for fire to jump over the firewall from one section of a building or from an adjacent building, ensuring that the designated fire compartmentalization is maintained.

This standard is critical in urban planning and safety regulations, reinforcing the importance of adhering to specific building codes to protect property and human life. The other options do not meet the requirements set forth by PD 1096, as they fall short of the necessary height to effectively serve the firewall's purpose in fire prevention.