For over a century, regulatory control for fire safety has been achieved mainly through a framework of prescriptive rules, particularly for passive fire protection measures. These measures include limitations on building height and size, provision of fire-resistant compartments, restriction on compartment size, selection of building materials, and other methods to reduce the risk of fire spread and limit the size of the fire. At the same time, the building design should incorporate features of layout and facilities which would enable the occupants to escape rapidly and safely from the effects of a fire.