FIGURE 17-2 -Two Identical Concrete Slabs Lie Flat and in Contact with in Contact

question 35

Multiple Choice

FIGURE 17-2
-Two identical concrete slabs lie flat and in contact with each other as shown in Fig. 17-2. If the temperature increases by 40°C, the lower edges opposite the contact edges remained fixed in position, and the lower edges of the contact side remain in contact, at what angle φ will the slabs be tilted? The coefficient of thermal expansion of the concrete is 10 × 10^-6/K.

• A)18.7°
• B)0.0283°
• C)14.5°
• D)1.62°
• E)answer depends on length of slabs

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