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A Report On Fire Protection Engineers

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Chapter 1
1 INTRODUCTION
1.1 General

Over the last few decades, large undivided volume buildings such as atrium buildings, covered shopping malls, and airport terminals have become increasingly popular.
Atria are one of the modern building features that have been developed by architects and connecting more than 2 or three floors closed at the top to provide attractive space for the occupants. However atria present a big challenge for fire protection engineers as the automatic sprinkler system may be useless in atria with height more than 15 meter because the possibility of fire occurs at the atrium and sprinkler system not activated because the smoke temperature may be less than activation temperature of automatic sprinklers.
Atrium may be classified to four categories as shown in figure 1.1.
1) Fully open atrium where the building has all its upper levels open to the atrium shaft.
2) Partially open atrium where the building has some of its lower levels open to the shaft and the remainder closed off.
3) Closed atrium where the atrium shaft is separated from the building by ordinary construction. The atrium floor may be used for recreation, restaurants or as a hotel lobby. 4) Sterile tube atrium has an atrium shaft separated from the building by fire resistant construction, with the atrium floor being used only for circulation and containing no combustible material. Figures from 1.2 to 1.5 show different examples of atria all over the world. Figure ‎1.1 Types of

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