In the building of the prevention of disasters

摘要

PROBLEM TO BE SOLVED: To contrive an early detection of a fire in a botanical roof, including a fire inside the roof which originates in its innermost section, prevent and control its spread and extinguish it by installing an appropiate fire prevention system. ;SOLUTION: A number of pipes 40 with openings to let in smoke are placed inside a botanical roof 20, and if smoke flows into the pipes 40, it is detected by built-in smoke-detectors. Nozzles 70 for fire foam are placed along the ridge of the roof to spray foam over the roof in case of fire. The attic 11 is provided with spray nozzles 80 for water to be sprayed onto the attic 11 in case of fire. A sheet of fireproof material is spread inside the roof. A monitor nozzle is set up in such a way that the direction of the water to be splayed from it will be the axial direction of the roofing material.;COPYRIGHT: (C)1997,JPO