| 摘要 |
A method for monitoring the load which is exerted on a roof comprises the following steps: providing a roof with an external surface on which a load can be exerted by, for example, a layer of water or snow, providing a sensor for detecting a phenomenon related to the load which is exerted on the roof, monitoring the phenomenon by means of the sensor, storing at least one predetermined value for the phenomenon, emitting a signal when the value for the phenomenon detected by the sensor exceeds a predetermined value.
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