A concrete beam of symmetrical I-section spanning 8m has flange width and thickness of 200 and 60mm respectively. The overall depth of the beam is 400mm. The thickness of the web is 80mm. The beam is prestressed by a parabolic cable with an eccentricity of 150mm at the center and zero at the supports with an effective force of 100KN. The live load on the beam is 2kN/m. Determine the resulting stress at the bottom fiber considering prestress + self-weight + live load. O 0.70(tension) O 3.80(compression) 7.4(tension)
A concrete beam of symmetrical I-section spanning 8m has flange width and thickness of 200 and 60mm respectively. The overall depth of the beam is 400mm. The thickness of the web is 80mm. The beam is prestressed by a parabolic cable with an eccentricity of 150mm at the center and zero at the supports with an effective force of 100KN. The live load on the beam is 2kN/m. Determine the resulting stress at the bottom fiber considering prestress + self-weight + live load. O 0.70(tension) O 3.80(compression) 7.4(tension)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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pre stressed conc. solution pls answer
Transcribed Image Text:A concrete beam of symmetrical I-section spanning 8m has flange width and thickness of 200 and
60mm respectively. The overall depth of the beam is 400mm. The thickness of the web is 80mm. The
beam is prestressed by a parabolic cable with an eccentricity of 150mm at the center and zero at the
supports with an effective force of 100KN. The live load on the beam is 2kN/m. Determine the
resulting stress at the bottom fiber considering prestress + self-weight + live load.
0.70(tension)
3.80(compression)
7.4(tension)
0.2(tension)
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