In the complex world of modern construction, fire safety is not just a regulatory requirement-it is a moral imperative. While we often think of fire protection in terms of sprinklers and alarms, the true unsung heroes are the passive fire protection (PFP) systems built into the very fabric of our buildings. These silent sentinels are designed to contain fire, slow its spread, and provide occupants with precious time to escape. This book serves as a definitive guide to these critical systems, demystifying the principles, components, and applications of PFP for a broad audience. It is written to bridge the gap between theoretical knowledge and practical application, ensuring that professionals and students alike can design, install, and maintain systems that truly save lives.