You can see the rebar in the photos so that checks out, and I would think without it a plane wouldn't be designed to withstand force from above like you would need to be able to bury it safely. If I buried something like this in my yard it would need to be able to withstand a utility truck driving over it at least once in a blue moon.
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You can see the rebar in the photos so that checks out, and I would think without it a plane wouldn't be designed to withstand force from above like you would need to be able to bury it safely. If I buried something like this in my yard it would need to be able to withstand a utility truck driving over it at least once in a blue moon.