I know you're getting an engineer, good call. But umm, the fact that you drove your truck up it means nothing. If you want to keep it, your engineer will probably tell you to core it and have it tested. That concrete was not poured to code, deteriorated badly and rebar on the outside. You don't know how they poured it, they could have used salt water, too much water, it could have sat in the truck for 3 1/2 hours. An engineer isn't going to simply look at it and sign it off for you, if he did then I would get a different engineer. I'm sure you know what you're doing but I wanted to point out when you said "looks structurally sound", looking isn't an approved test method for concrete.the ramp is structurally sound, and I can heal it, I even drove my truck up it.
Those rebound hammers are cool and a bit pricey as well,...for those who wish to know more, I found a video that helps explain.The engineer gave the OK, "It was overbuilt" back 25yrs. ago, so she said,
She took a few samples at the base and piers that even degraded as it is, is still in spec.
as i figured.
The rebar, even after decades of exposure to the elements, is still within its original diameter, which she attributes to better rebar back in the day, to check the hardness of the concrete, she used a cool tool, "a Schmidt hammer".
I gotta get one
Now to find the time to "make it pretty"
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