As can be seen from the above photo's, apart from around
the edges, this foundation wasn't very deep. Even the edge
ditches were relatively shallow.
To strengthen the concrete base, iron reinforcing grills
were set into the concrete. On the main part the grills were
just laid in place but in the ditches around the edge, the cages
were bent into box shapes.
In the picture right, the first of these boxes is being formed. |