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Spenglermeister In HFP Practice Questions - Dipl. Spenglermeister In (HFP) Maître Ferblantier Avec Diplôme Fédéral Exam

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A Spenglermeister is designing a titanium zinc (Titanzink nach EN 988, thermal expansion coefficient alpha_T = 0.022 mm/(m*K)) double standing seam roof with a continuous tray length of 14.0 meters. What is the expected linear thermal expansion (delta_L) for a design temperature range of delta_T = 100 K (-20°C in winter to +80°C under direct summer solar radiation)?
Correct Answer:
30.8 mm

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