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Section d'un cerce

Marouane Tabit

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j'aimerais bien savoir comment calculer la section d'un cerce HA20 placé comme étant un ferraillage transversale de pieu, personnellement j'ai calculé la section de la manière la plus évidente de deux section d'un HA20=3.14*2=6.28cm² mais dans un document j'ai trouvé qu'il a pris une section de 10.26cm² ? 

merci pour toute interaction! 

Edited by Marouane Tabit
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