We want to build a table with benches outside.

For this, we have a concrete base with vertical rebars (40cm out of the ground).

We want to build brick columns for the structure of the table/bench (50/80 cm high).

Inside the brick columns, we would pour concrete (so it would hold the rebars, bricks together).

The question:

  • Do we need to completely separate the concrete base from the brick columns/concrete in the columns?
  • OR: we just need to put bituminous plates under the bricks and not the concrete in the center of the brick columns?

Image is from Google, but related:

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  • 2
    I'm not sure how waterproofing plays into this question. What about water concerns you? – JPhi1618 Oct 22 '19 at 15:49
  • Have you been looking at exterior brick walls with a "damp-proof course" and think that you need something similar? – brhans Oct 22 '19 at 19:57
  • I would pour it in place with nothing in between. – Ed Beal Oct 23 '19 at 14:16
  • my concern is that water might damage the bricks. so the bricks are outside, which sometimes could get below 0 C. – jano4372 Oct 23 '19 at 17:04

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