What is the minimum setback requirement for structures when an active fault is present?

The minimum setback requirement for structures when an active fault is present is crucial for ensuring the safety of buildings in earthquake-prone areas. A setback of 50 feet is mandated to create a buffer zone between the active fault line and any structures built nearby. This distance helps mitigate the risk of damage from fault shifts during seismic events by reducing the likelihood of the structure being impacted directly. The 50-foot requirement is in line with guidelines that aim to protect properties from ground shaking and fault displacement, allowing for a safer distance from potential seismic hazards. Adhering to this standard is essential for compliance with the California Building Standards, as it emphasizes the importance of siting and design in earthquake-resistant construction.