Those are screw jacks(new). Those 2 can’t hold up ALL that concrete above. They can be put there and tightened temporarily to support only what’s intended for that support alone. Those screws can never be tightened to lift the weight above it. They’re too amall. As they are being used, it’s unsafe. There shold be plates there to distribute the load. Otherwise, if the concrete sits on that, it will get broken up. That’s an expansion joint and they might be there to HOLD it in place while work is being done on a bearing, but there’s still no heavy plates there to distribute the stress and the screw can’t be used to adjust the concrete so a bearing fix ends up in the right place. hydraulic jacks should be used to do that. They just won’t keep the position stable, because they creep. Screw jacks are used to hold, or to lift something withinn their capacity. THose are too small. It’s also 1/2 of an expansion joint, so they’ll tip, or break concrete when the slab moves. Concretebob might be able to elaborate. I don’t know what’s inside, or what they’re up to.
Those are screw jacks(new). Those 2 can’t hold up ALL that concrete above. They can be put there and tightened temporarily to support only what’s intended for that support alone. Those screws can never be tightened to lift the weight above it. They’re too amall. As they are being used, it’s unsafe. There shold be plates there to distribute the load. Otherwise, if the concrete sits on that, it will get broken up.
~~~~~~~~~
I agree,,,It sorta looks like BS to me,,,But,,,
Strange things happen in this world,,,
JMHO : Chad has a good site and for the most part it’s
“Take it to the bank info.”
Back to topic : I’ve been hearing about “repairs” to the
35W bridge,,,4ft. piece of steel plate I think,,,
Maybe the halfass repair didn’t hold ?...:0/