The old radial lock gates had big metal pivot points on the lock wall to act as a hinge when they lifted up and down. We had to test these pivots to know if we could reuse them for the new gates when they got delivered at the summer of 2017.
We checked the pivots by literally trying to tear them out of their brackets using powerful jacks. If any of the bolts holding them in place were weak, we would have detected tiny movments through sensors attached to the metal.
