Chapter 10, Problem 28P

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

Chapter
Section

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

# The concrete sections of a certain superhighway are designed to have a length of 25.0 m. The sections are poured and cured at 10.0°C. What minimum spacing should the engineer leave between the sections to eliminate buckling if the concrete is to reach a temperature of 50.0°C?

To determine
The minimum spacing between the sections.

Explanation

Given Info: Length of the concrete section ( L0 ) is 25.0 m. The temperature changes from T1=10.0Î¿C to T2=50.0Î¿C . The co-efficient of linear expansion ( Î± ) for concrete is 12Ã—10âˆ’6/Î¿C

Formula to calculate the minimum spacing is,

Î”L=Î±L0(T2âˆ’T1)

Substitute 12Ã—10âˆ’6/Î¿C for Î± , 25.0 m for L0 , 10.0Î¿C for T1 and 50

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