Crack Monitors (1970)

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  • Historic Information

Crack Monitors

The red brick walls of the buildings in the Low Zone were laid according to traditional English bonding techniques– alternate rows of headers and stretchers. Such solid brick walls form part of the main structure of single-storey buildings.

We can see that the red bricks of this wall were laid with the traditional English bonding method. Brick walls constructed in this way are thicker and stronger, making the walls strong enough to be part of the support structure.

This wall structure has been conserved quite well. Engineers started using old forms of surveillance in 1970 to monitor the structure of this block. Some crack monitors here have “November 3th, 1970” etched on them, scatter on the exterior wall of this block. It also shows old door and window positions on the left side.