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1. #Ontario building code maximum beam diflection cracked
2. #Ontario building code maximum beam diflection crack

Thus, the flexural behavior of reinforced concrete members with GFRP bar should be investigated further with respect to serviceability.

#Ontario building code maximum beam diflection crack

The flexural capacity of reinforced concrete members with GFRP bar has been an issue in structural design due to the relatively low modulus of elasticity, which causes a larger deflection and crack width. Much structural research using FRP bars has been performed in field applications and there are now guidelines for the design and construction of concrete reinforced using FRP bars, such as the AASHTO LRFD Bridge Design Specification, ACI 440 guidelines, and the Canadian Design Code. Their high strength-to-weight ratio, corrosion-free properties, and ease of handling during construction are considered advantages for application in civil structures. In many regions, fiber-reinforced polymer (FRP) bars have been of considerable interest to civil (structures) and structural engineers for strengthening and reinforcing concrete as a substitute for steel bars. Hence, using a noncorrosive reinforcement can be an effective solution to increase the service life of RC structures. One of the main factors contributing to degradation of structural condition is the corrosion of steel reinforcement. Service life of reinforced concrete (RC) structures can be decreased by a number of factors including harsh environmental conditions and unexpected excessive external loads. It was found that the proposed model had better accuracy and was a familiar approach to structural engineers to predict and evaluate the deflection behavior. To evaluate the generality of the proposed model, a comparative study using previous test results from the literature and the results from this study was carried out. It was confirmed that the empirical modification based on Branson’s equation was valid for predicting the effective moment of inertia of R/C beams with GFRP bar in this study. In a comparative study using six equations suggested by others, the proposed model showed better agreement with the experimental test results.

#Ontario building code maximum beam diflection cracked

This parameter was introduced to reduce the effect of the cracked moment of inertia for the reinforced concrete member, including a lower reinforcement ratio and modulus of elasticity of the GFRP bar. For better prediction of the moment-deflection relationship until the ultimate strength is reached, a nonlinear parameter ( ) was also considered. The proposed model to predict the effective moment of inertia for R/C beam with GFRP bars was developed empirically, based on Branson’s equation to have better accuracy and a familiar approach to a structural engineer. The authors carried out experimental and analytical research to evaluate the flexural capacity and the moment-deflection relationship of concrete beams reinforced with GFRP bars.