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A post-tensioned bridge girder with unbonded tendons is of box section of overall dimensions 1200 mm wide by 1800 mm deep, with wall thickness of 150 mm. The high-tensile steel has an area of 4000 mm² and is located at an effective depth of 1600 mm. The effective prestress in steel after all losses is 1000 N/mm² and the effective span of the girder is 24 m. If fek = 40 N/mm² and ƒp = 1600 N/mm², estimate the ultimate flexural strength of the section.

A post-tensioned bridge girder with unbonded tendons is of box section of overall dimensions 1200 mm wide by 1800 mm deep, with wall thickness of 150 mm. The high-tensile steel has an area of 4000 mm² and is located at an effective depth of 1600 mm. The effective prestress in steel after all losses is 1000 N/mm² and the effective span of the girder is 24 m. If fek = 40 N/mm² and ƒp = 1600 N/mm², estimate the ultimate flexural strength of the section.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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A post-tensioned bridge girder with unbonded tendons is of box section of overall dimensions 1200 mm wide by 1800 mm deep, with wall thickness of 150 mm. The high-tensile steel has an area of 4000 mm² and is located at an effective depth of 1600 mm. The effective prestress in steel after all losses is 1000 N/mm² and the effective span of the girder is 24 m. If f = 40 N/mm² and fp = 1600 N/mm², estimate the ultimate flexural strength of the section.
Transcribed Image Text:A post-tensioned bridge girder with unbonded tendons is of box section of overall dimensions 1200 mm wide by 1800 mm deep, with wall thickness of 150 mm. The high-tensile steel has an area of 4000 mm² and is located at an effective depth of 1600 mm. The effective prestress in steel after all losses is 1000 N/mm² and the effective span of the girder is 24 m. If f = 40 N/mm² and fp = 1600 N/mm², estimate the ultimate flexural strength of the section.
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