Question
Download Solution PDFA simply supported concrete beam pre-stressed with a force of 2500 kN is designed by load balancing concept for an effective span of 10 m and to carry a total load of 40 kN/m, the central dip of the cable profile should be
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Prestress concrete is the concrete in which internal stresses are produced due to compression or tension applied before applying external load and these stresses are counter balanced by the applied load to the desired degree.
Calculation:
Given,
Prestressing force = 2500 KN
Effective span length = 10 m
Total external load = 40 kN/m
We know that,
\(M = P.e = {WL^2 \over 8}\)
\(e = {WL^2 \over 8P} = {40\times10^2 \over 8\times2500} = 0.2 m = 200 mm\)
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