An unsymmetrical I-section has a top flange-width of 300 mm. The thickness of the flange varies from 80 mm at the ends to 100 mm at the junction of the web, which is 80 mm thick. The effective depth to the tendons is 400 mm. Given f=40 N/mm².fpu=1600 N/mm², the ratio (fpy/fpu) = 0.90.fe= 800 N/mm², and Aps =400 mm², estimate the flexural strength of the section if it is (a) fully bonded, (b) unbonded, using ACI 318-1989 code provisions. Assume the equivalent uniform thickness of flange, h, as 87.3 mm.
An unsymmetrical I-section has a top flange-width of 300 mm. The thickness of the flange varies from 80 mm at the ends to 100 mm at the junction of the web, which is 80 mm thick. The effective depth to the tendons is 400 mm. Given f=40 N/mm².fpu=1600 N/mm², the ratio (fpy/fpu) = 0.90.fe= 800 N/mm², and Aps =400 mm², estimate the flexural strength of the section if it is (a) fully bonded, (b) unbonded, using ACI 318-1989 code provisions. Assume the equivalent uniform thickness of flange, h, as 87.3 mm.
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
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Transcribed Image Text:An unsymmetrical I-section has a top flange-width of 300 mm.
The thickness of the flange varies from 80 mm at the ends to 100 mm at the junction of
the web, which is 80 mm thick. The effective depth to the tendons is 400 mm. Given
f=40 N/mm².fpu=1600 N/mm², the ratio (fpy/fpu) = 0.90,fe= 800 N/mm², and Aps
=400 mm², estimate the flexural strength of the section if it is (a) fully bonded, (b)
unbonded, using ACI 318-1989 code provisions. Assume the equivalent uniform
thickness of flange, h, as 87.3 mm.
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