The International Building Code (IBC 2000) and the Building Construction and Safety Code, as well as the National Fire Protection Association (NFPA 2012) defined HRBs as buildings 75 feet or greater in height measured from the lowest level of fire department vehicle access to the floor of the highest occupiable story.
HRBs have provided spacious, convenient to our working …show more content…
• The International Conference on Fire Safety in HRBs defined a high-rise as "any structure where the height can have a serious impact on evacuation"
• The International Building Code (IBC 2000) and the Building Construction and Safety Code, as well as the National Fire Protection Association (NFPA 2012) defined HRBs as buildings 75 feet or greater in height measured from the lowest level of fire department vehicle access to the floor of the highest occupiable story.
Meanwhile, Avillo, (2002) mentioned that a definition for the categorization of a high-rise building is any building over 75 ft in height and equipped with a standpipe and/or sprinkler system. This definition of a high-rise is not totally accurate from a strategic and logistical point of view. Many departments have limited or non-existent aerial capability.
Building codes vary in their definition of HRBs, but the intent is to define buildings in which fires cannot be fought successfully by ground-based equipment and personnel. Thus, ordinarily, high-rise means buildings 100 ft or more high (Merritt & Ricketts, …show more content…
In the initial stage, fire behaviour largely depends on the types of fuel available in the building. If the fuel is in gaseous form, the ignition will be very rapid and if the fuel is in a solid material like timber, it will be a slow combustion or smouldering fire. At the initial stage only smoke and heat will be released. Figure: 2.3: A standard fire curve in enclosed spaces (CIBSE, 2003)
The rate of development of fire and its duration are influenced by the nature of the contents of the building and materials of the room surfaces (Marchant, 1972).
The phase of fire growth is started when ignition has begun and continues until all most of the combustible materials are burning and the heat releases is maximum. For building fires the temperature at this stage ranges from 9000 C – 1200 0 C and the duration of the fire is determine by the amount of air supplied and the quantity of combustible material available.
Even though fire is in a