Book excerpt: This report on the Philadelphia, Pennsylvania, One Meridian Plaza fire documents one of the most significant highrise fires in United StatesÕ history. The fire claimed the lives of three Philadelphia firefighters and gutted eight floors of a 38-story fire-resistive building causing an estimated $100 million in direct property loss and an equal or greater loss through business interruption. Litigation resulting from the fire amounts to an estimated $4 billion in civil damage claims. Twenty months after the fire this building, one of PhiladelphiaÕs tallest, situated on Penn Square directly across from City Hall, still stood unoccupied and fire-scarred, its structural integrity in question. This fire is a large scale realization of fire risks that have been identified on many previous occasions. The most significant new information from this fire relates to the vulnerability of the systems that were installed to provide electrical power and to support fire suppression efforts.