ABSTRACT
These factors were involved at St Paul’s Cathedral in London where automated monitoring systems were installed to monitor cracks in the South Transept and movements of the bell towers. Traditional techniques were producing inconclusive results for deciding what mechanism was responsible for further movement in a network of cracks and in construction joints. The cost of monitoring the situation more closely using manual techniques was prohibitive and the installation of necessary equipment was also going to be very intrusive. Therefore a custom-built monitoring system was installed to rapidly and discreetly gather data which then enabled those responsible to decide that no special action was required in the short term.
