LandScope Engineering Ltd

As our built environment becomes ever more dense and complex additional responsibility is being placed on the construction community to ensure the welfare of existing structures adjacent to construction activity.  A new tunnel development may impact subsidence rates of structures above whereas a deep piling operation may affect an adjacent embankment – complex dynamics and inter-dependencies can now be measured and modelled with the latest advanced survey instrumentation.

A structure dynamic will be influenced by diurnal movements (solar, precipitation) as well as longer term movements such as settlement.  The design of a position monitoring campaign must consider these natural phenomena and be able to isolate movement generated by other external factors – e.g. tunnelling beneath.  Typically a subject structure would be monitored for a period before the proposed change (eg. proposed new building); during the process of change (eg. during construction process) and for a period after the change.  This approach allows the engineering surveyor to discern ambient movement from change generated movement.  To manage, monitor and model these structures the engineering surveyor relies on sub-millimetre and sub-second of arc measurements augmented with detailed analysis software.