Special Reinforced CMU wall without a 180-degree hook for horizontal rebar at the end of the wall

[dstruct99]

The contractor failed to provide a 180-degree hook for the horizontal rebar at the end of the CMU wall designed to be a specially reinforced shear wall. They have asked us (EOR)if there is a way around this. Is there one?
The TMS 402-16 code explicitly states these hooks are required at the end of the wall. Has anyone faced this issue before?

 

[dstruct99]

Has anyone faced a similar situation before? Thank you.

 

[Aesur]

I haven't found a way around it to date, but haven't spent a lot of time looking as I have only needed special maybe 2 times in my career thus far. If you can't get a different lateral system that doesn't require it to work (this means redesign) then maybe the solution is for them to redo their work in the wall.

 

[EZBuilding]

A post installed mechanical coupler may provide for development of the reinforcement while minimizing the amount of retrofit required. I would confirm that it is allowed per TMS for a special reinforced wall - don't have it handy.

 

[dstruct99]

Thank you Aesur and EZBuilding for your input.
I am more concerned about the confinement of the vertical rebar at the end of the wall. If there is no 180-degree hook, what provides confinement for the last vertical rebar under flexural compression?

If I try to justify by saying that this wall is no longer a special reinforced, but an ordinary or intermediate shear wall (without a 180-degree hook), is the assumption that the end of the wall is now allowed to go into inelastic deformation with some damage expected at the end of the wall?