AASHTO Hooked Bar Development Length Modification Factors

[Quade999]

I've got a question about the application of the modification factors to the development length of hooked bars according to AASHTO 5.10.8.2.4.
In the same paragraph the first sentence mentions that reinforcement with yield greater than 75ksi needs to have ties. The second sentence in this paragraph says that for hooks not located at the discontinuous of a member, the modification factors may be applied. Is this to mean that the second sentence only applies for steel with a yield greater than 75ksi and the modification factors can be applied for all reinforcement with a yield strength less than 75ksi regardless of their location (discontinuous end or not)?

If it applies to all reinforcement, then what about the situation below where a bar is hooked around a continuous corner? Would the modification factor of 0.8 be applicable here, or would it still count as a discontinuous end?

Thanks

 

[r13]

1. Sentences above does not prohibit the application of the modification factors to all any grade of reinforcing steel (60, 75 and greater), as long as the location of the hook meeting the continuity requirement, and the additional limits set in Article 5.10.8.2.4b. The provision only requires ties for hooked bars with yield strength greater than 75 ksi.
2. I am not familiar with AASHTO's terminology, you should make sure the interpretation of concrete side cover distances are correct.