[EarthResearcher333]

Graphic of Anchor Tendons (to scale) imbedded within the Gate Concrete Column - 2 sets of 12 for each Trunnion Pin - 48 anchors to each column

Removal of the aged steel rod tendons requires coring of the concrete column slab from the side to remove the "Tee" anchors, nuts, washers imbedded in the concrete. Precise Coring down the length of the steel rod tendon is another requirement to facilitate replacement of a new steel tendon. Drawing altered to show Radial Gate in full upward retraction. This scale drawing reveals that all of the Anchor Tendons would be accessible for repair/replacement construction with the Radial Gate fully raised.

[KC Burke]

That makes it pretty clear how the fix requires the gate come out for access to the reinforcement anchorage.

I think the State of California, DWR, has a repair opportunity that will hide all their sins. I think they better own up to it and get them all covered now while the cash is flowing.

[meyer]

Thanks for the additional drawing. Part of me wonders why the gate positions weren’t reversed so that the reservoir side wasn’t pushing the gate structure INTO the concrete instead of pulling away from it. In other words, putting the “hinge” or pivot side towards the chute instead of the reservoir. But I suspect that I’m overlooking some aspect to the situation.