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Strain
gauges in the transepts - SMC122
Located
at various points on the crossing and transepts of St Magnus
Cathedral, at both triforium and clerestory leves, are devices
used to monitor the movement of the building.
Following the repair work in the 1970s these gauges have been
used to monitor if the Cathedral walls are unstable. They
are placed in the transepts and crossing due to the large
amount of strain placed upon the walls by the weight of the
tower.
There is little evidence to suggest that St Magnus Cathedral
is unstable due to subsidence in the soil and foundations.
The problems in the nave that were addressed in the 1970s
were probably caused by poor construction.
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