Analysis of Fire Protection with Focuse on the Specific Conditions of the Historic Roofs

Abstract

Protecting of historic roofs is an important part of efforts to protect our cultural heritage. These wooden structures carry a lot of information about the authentic tools, technologies and construction processes. Trusses are generally endangered by many risks that could cause irrecoverable damage and loss of information. In addition to the threat wood destroying insect and fungi, should not be forgotten on fire threats that may start from lightning, through electrical installations, to the burning of the surrounding dry grass areas. Historical wooden trusses are with respect to the old wood, indoor climate, the unavailability or the fact that many national cultural monuments are located outside of the inhabited territories, very susceptible to fires. Nevertheless, there are many methods, which are used for new buildings, but unusable for historical truss, and others were proved to be unsuitable by the time. This article analyses the possibilities of modern firefighting arrangements in the historic truss with regard to the specific construction conditions and with regard to the very rare substructure, which should not be damaged.