[Repeal The 17th]

“... How do you get a broken tendon out of 37 feet of concrete? “
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I have been wondering the same thing.
And... just what exactly are these “tendons”?
Are they just a big steel rod that is threaded on each end
and tightened down to a certain torque specification?
An earlier post mentioned they were inside of a sleeve.
The dumb answer is: you get them out the reverse way you put them in,
but if you try to get it out and it breaks half way down, then what?

[EarthResearcher333]

What are Anchor Tendons? How would you get them out?

Here are links that have prior discussion information with good reference diagrams. (Yes they are special steel rods meant to endure high tensile psi). These rods transfer the load back into the main body of the concrete. Without these rods, the trunnion pins would bust away from the concrete column edge.

Helpful Patent Diagram revealing what Anchor Tendons are, the sleeves, Anchor nuts, Bearing plate, etc

Oroville Anchor Tendon Drawings & discussion on replacement

Discussion: Accessing Oroville Anchor Tendons for replacement - Radial Gate Lift - Diagram

[meyer]

I believe that Earth Researcher explained it many posts ago. Essentially, they have to cut into the concrete where the end of the rods are, from the side, to access the “nuts” that they rods are screwed into so that they can be removed. He does a much better job of explaining it than I can, because he is more familiar with the method of construction.