Computer · Prestressed Concrete
A rectangular concrete beam of dimensions 120 mm × 300 mm is prestressed by a straight cable with an effective force of 180 kN at an eccentricity e = 50 mm. Given cross-sectional area A = 36 × 103 mm2 and section modulus Z = 18 × 105 mm3, find the maximum total stress (in N/mm2) due to prestress at the bottom fibre.
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