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Pages 47-49

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From page 47...
... In the LRFD Sectional Design Model, this angle is calculated using the MCFT and using the longitudinal strain at mid-depth. In the proposed simplified provisions, this angle is calculated in the web-shear region using Mohr's circle of stress to find the angle of diagonal cracking.
From page 48...
... The difference can be a factor of two and one-half between the AASHTO Standard Specifications and LRFD Sectional Design Model.
From page 49...
... 4.2 RECOMMENDED RESEARCH Several significant shortcomings in shear design practice were presented above. Of particular concern are the large differences between codes of practice in the required amount of shear reinforcement, the maximum allowable shear design stress, minimum shear reinforcement requirements and how the depth effect in shear is addressed.


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