A 2500 Ib horizontal bar is supported by three 3/16-inch diameter wires as shown. The wires are symmetrically spaced and 20 feet long. The two outer wires are steel and the middle wire is brass. Calculate: a) Stresses in the wires b) Elongation of the wires c) Change in diameter of the wires due to their elongation ////// Steel 20 Brass 2500 lb bar

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A: Allowable stress=170 MPaForce=230 kN = 230000 NStress=ForceArea170=230000π4×d2d=41.5 mm

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Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.