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I had to apply the concrete<br />
in two shifts: first,<br />
in the flat formwork, and<br />
second, when the concrete<br />
is dry and the<br />
spacers are removed.<br />
Once the spacers are<br />
removed, the concrete<br />
can be folded and fixed<br />
in the final position,<br />
ready for the second<br />
application.
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