File:Lavalette paissière poutre brûlée.jpg

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Français : Les paissières de type à pieu et carroyage (cf Gasconnet à Montferrier-sur- Lez / Clapiers et le Martinet à Castelnau-le-Lez) pouvaient comporter, à leur sommet , "en dos d'âne" une poutre sommitale. Celle ci renforçait la structure de la paissière face aux crues et embâcles. 
Cette poutre sommitale était cloutée (comme on peut le voir sur la photo) à d'autres poutres constituant le carroyage de la paissière.

La surfréquentation (surtout estivale) de la paissière provoque des feux de poutres qui fragilisent la structure de la paissière. Le fait est d'autant plus grave concernant les poutres sommitales. leur affaiblissement ou disparition peut créer une brèche dans la paissière. C'est le cas ici au milieu de la paissière de Lavalette.

Il serait souhaitable d'interdire les feux sur les paissières et de consolider la brèche existante afin d'éviter son extension.
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Author Olive34830

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