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1-. A concrete beam of rectangular cross section of size 300mm x 500 mm is prestressed...

1-. A concrete beam of rectangular cross section of size 300mm x 500 mm is prestressed with 750kN at an eccentricity of 100mm from the centre of gravity of the gross section with 500 mm2 of prestressing steel stress to 1500 N/mm2. Analyse the section for stress (find the stress in concrete at top and bottom fibre)

2- The same concrete is covering a span of 7m. It is subjected to live load of 20 kN/m. Evaluate the stresses at top and bottom fibres at mid cross section due to the effect of prestress, dead and and live loads. Assume unit weight of concrete to be 24 kN/m3

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Ally Wells answered 7 months ago
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