H.W No.1: A pretension beam with variable eccentricity has a rectangular of 200 mm width and 500 mm depth fc'=28 MPa, fci'=21 MPa, R=0.8. Use allowable stresses: a- Find the initial prestress force. b- What uniformly distributed load can be carried on 12 m simple span? c- Find the max. permissible eccentricity of the prestress tendons at 1/4 of the span to satisfy service allowable stress limits. d- Find the steel area and no. of strands required use 12.7 mm 7-wire strand, fpy=1489 MPa. e- Check stresses at midspan, assume all live load sustained.
H.W No.1: A pretension beam with variable eccentricity has a rectangular of 200 mm width and 500 mm depth fc'=28 MPa, fci'=21 MPa, R=0.8. Use allowable stresses: a- Find the initial prestress force. b- What uniformly distributed load can be carried on 12 m simple span? c- Find the max. permissible eccentricity of the prestress tendons at 1/4 of the span to satisfy service allowable stress limits. d- Find the steel area and no. of strands required use 12.7 mm 7-wire strand, fpy=1489 MPa. e- Check stresses at midspan, assume all live load sustained.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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