Question
Download Solution PDFIf a simply supported concrete beam, prestressed 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 \(40 \text{kN/m}\), 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.
Central dip is given by: \(e=\frac{WL^2}{8P}\)
where, P = Prestressing force, L = effective span, W = Acting UDL
Calculation:
Given:
P = 2500 kN, W = 40 kN/m, L = 10 m
\(e=\frac{40 \times10^2}{8\times2500}=0.2m=200mm\)
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