A Bridge Is Made with Segments of Concrete 50 M

question 5

Multiple Choice

A bridge is made with segments of concrete 50 m long. If the linear expansion coefficient is 12 × 10−⁶ (°C) −¹, how much spacing (in cm) is needed to allow for expansion during an extreme temperature change of 150° F?

• A) 10
• B) 2.5
• C) 7.5
• D) 5.0
• E) 9.5

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Definitions:

Material's Ability

The inherent properties and characteristics of a material that determine its suitability for specific applications or performances.

Permeability

A measurement of a material’s ability to conduct magnetic lines of flux. The standard is air, which has a permeability of 1.

Reluctance

Resistance to magnetism.

Resistance

A measure of an object's opposition to the flow of electric current, resulting in electrical energy being dissipated as heat.