Reinforcement in deep foundation hole

[bighenk]

Hi, I'm working on casting pillars for the carport. For today's pillar, it was a bit difficult to dig at the end, so the hole ended up being only about 1.3 meters deep. My question is:

I first cast a footing directly on some macadam at the bottom. There was maybe 6-7 cm of macadam and then concrete. The rebar and the hole weren't as deep as I wanted, so the bar is basically lying entirely against the macadam in the concrete.

Will it be a problem with the "shallow" rebar? It's still 1.2 meters down, so it shouldn't rust much down there, right? I secured the casting mold, which is 1.2 meters and 20 cm in diameter, in the wet concrete. I'll finish casting the pillars another day.

 

[Lenza]

Ordinary reinforcement in carbon steel should not be exposed without concrete surrounding it; simply being in the ground is not sufficient for protection. It is the high pH value in concrete that provides corrosion protection. Any other workarounds will lead to a shortened lifespan of the structure regarding the reinforcement's function.