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Although the snow danced flutteringly seems to be very light apparently, as it lies and solidifies, This changes to a very heavy object. When 150kg or more of snowy weight became continuous snow cover gradually and incidentally solidifies in fresh snow generally by per 1 common cube meter It is said that it may be set to 500kg or more. Since water weighs 1t per cubic meter, there will be about the a half of weight. Since the area of a roof must be quite large, as for a heavy snowfall area, it is the dignity of dozens of t. It will be said that it has caught with the roof and the pillar. Now, the house which collapses by snowy dignity will come out, and this weight also of a reason for the snow to be shoveled away from the rooftop is one of the causes. |