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Toit à deux versants

Un toit régulier à deux versants est le type de toit le plus habituel. Des fermes pignons sont
placées aux extrémités et des fermes ordinaires sont espacées entre les deux. Les fermes
pignons sont posées sur les murs d'extrémité et elles transmettent directement les charges du
toit au mur en dessous. Les fermes ordinaires sont conçues de manière à agir comme élément
en flexion supporté par les deux murs extérieurs.