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EXAMPLE 7.11 A pretensioned beam of rectangular section 300 mm wide and 700 mm deep is stressed by 1600 mm² of high-tensile steel located at an effective depth of 600 mm. The effective stress in the tendons after all losses is 800 N/mm². The beam is reinforced with supplementary reinforcement consisting of 4 bars of 25 mm diameter of Fe-460 grade steel located 100 mm from the soffit. Estimate the ultimate flexural strength of the section according to British code regulations. Assume the characteristic cube strength of concrete as 40 N/mm².

EXAMPLE 7.11 A pretensioned beam of rectangular section 300 mm wide and 700 mm deep is stressed by 1600 mm² of high-tensile steel located at an effective depth of 600 mm. The effective stress in the tendons after all losses is 800 N/mm². The beam is reinforced with supplementary reinforcement consisting of 4 bars of 25 mm diameter of Fe-460 grade steel located 100 mm from the soffit. Estimate the ultimate flexural strength of the section according to British code regulations. Assume the characteristic cube strength of concrete as 40 N/mm².

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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EXAMPLE 7.11 A pretensioned beam of rectangular section 300 mm wide and 700 mm deep is stressed by 1600 mm² of high-tensile steel located at an effective depth of 600 mm. The effective stress in the tendons after all losses is 800 N/mm². The beam is reinforced with supplementary reinforcement consisting of 4 bars of 25 mm diameter of Fe-460 grade steel located 100 mm from the soffit. Estimate the ultimate flexural strength of the section according to British code regulations. Assume the characteristic cube strength of concrete as 40 N/mm².
Transcribed Image Text:EXAMPLE 7.11 A pretensioned beam of rectangular section 300 mm wide and 700 mm deep is stressed by 1600 mm² of high-tensile steel located at an effective depth of 600 mm. The effective stress in the tendons after all losses is 800 N/mm². The beam is reinforced with supplementary reinforcement consisting of 4 bars of 25 mm diameter of Fe-460 grade steel located 100 mm from the soffit. Estimate the ultimate flexural strength of the section according to British code regulations. Assume the characteristic cube strength of concrete as 40 N/mm².
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