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PRESTRESSED CONCRETE STRUCTURES

LECTURE NOTES. ON. PRESTRESSED CONCRETE STRUCTURES . Course code: A80150. Regulation: R15 (JNTUH). IV B. Tech II Sem PREPARED BY. Dr. VENU M Mr GUDE RAMA KRISHNA. Professor Assistant Professor CIVIL ENGINEERING. INSTITUTE OF AERONAUTICAL ENGINEERING. (Autonomous). Dundigal, Hyderabad - 500 043. UNIT-1. INTRODUCTION. Definition of Prestress: Prestress is defined as a method of applying pre-compression to control the stresses resulting due to external loads below the neutral axis of the beam tension developed due to external load which is more than the permissible limits of the plain CONCRETE . The pre-compression applied (may be axial or eccentric) will induce the compressive stress below the neutral axis or as a whole of the beam c/s. Resulting either no tension or compression.

walls) or inside the hollow space of a box girder. This technique is adopted in bridges and strengthening of buildings. In the following figure, the box girder of a bridge is prestressed with tendons that lie outside the concrete. Figure: External prestressing in circular tanks

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  Bridge, Structure, Concrete, Girders, Prestressed, Box girder, Prestressed concrete structures

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