The first step is to set the corner stone at which the heights are measured.
This stone must be aligned carefully with the water level. The height (8,33 cm) must be strictly adhered to.
Then all the other corner stones are placed and aligned after the first corner stone.
When all the corner stones are fixed, we check again all the measurements.
Well, let's go! We tension the cord and align all the stones with the cord.
The first row is growing gradually. The short side is already finished.
So far it has been very good. Now the last stone of the row is bricked.
Sven and Peter have carefully and dimensionally built, the last stone of the long side of the wall fits exactly.
Now the first row is finished. And it looks rather good.