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Reinforce concrete design

Reinforce concrete design

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Reinforce concrete design

A reinforced concrete beam is 350 mm wide and 600 mm deep. The beam is simply supported over a span of 8 m and carries a uniform dead load of 11 kN/m including its own weight and a uniform live load of 15 KN/m. The beam is reinforced tension bars of 530 mm. Modulus of elasticity of concrete Ec=21650 MPa, Es=200 GPa, & a(allow)=L/240 Required: (1) Calculate the maximum instantaneous deflection due to service loads; (2) Calculate the deflection for the same loads after five years assuming that 40% of the live load is sustained; (3) Is the beam adequate or not against deflection? (Justify your answer) b=350 mm 6-25 mm Ø d=530 mm h = 600 mm N.A. b=350 mm NA, 27,208 Cracked section for I d-c
Transcribed Image Text:A reinforced concrete beam is 350 mm wide and 600 mm deep. The beam is simply supported over a span of 8 m and carries a uniform dead load of 11 kN/m including its own weight and a uniform live load of 15 KN/m. The beam is reinforced tension bars of 530 mm. Modulus of elasticity of concrete Ec=21650 MPa, Es=200 GPa, & a(allow)=L/240 Required: (1) Calculate the maximum instantaneous deflection due to service loads; (2) Calculate the deflection for the same loads after five years assuming that 40% of the live load is sustained; (3) Is the beam adequate or not against deflection? (Justify your answer) b=350 mm 6-25 mm Ø d=530 mm h = 600 mm N.A. b=350 mm NA, 27,208 Cracked section for I d-c
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