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= tan 45°. 3,75 = 3,75 m T 2 = T 6 T 2 = tan α .(B 1 +B 2) = tan 45° .(3,75+3,75) = 7,5 m B2 B3 B4 B5 B6 B7 B8 D1 D2 D3 D4
