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RELIABILITY OF PARTIALLY PRESTRESSED BEAMS AT SERVICEABILITY LIMIT STATES

A systematic investigation of the reliability of partially prestressed concrete beams at six serviceability limit states is described. The evaluation of reliability is based on the first order, second moment method. The code calibration method was used to determine the reliability index (or safety index) for 64 different beam designs. The effects of cross-sectional shape, span length, magnitude of live load and degree of partial prestressing were also determined.