Civil Engineering MCQAE Level Civil Engineering
A steel tension member carries 100 kN on gross area 1500 mm². Average tensile stress is
Steel StructuresOriginal practiceMEDIUM
Choose the correct answer
A
133.33 N/mm²
B
116.67 N/mm²
C
33.33 N/mm²
D
66.67 N/mm²
Correct Answer
D. 66.67 N/mm²
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Average direct (axial) stress sigma = P/A, where P = axial force and A = cross-sectional area. Assumes the load acts through the centroid and stress is uniform across the section (valid far from the load application point, per Saint-Venant's principle). Units: N/mm^2 (MPa). Stress=P/A=100×1000/1500=66.67 N/mm².
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