Monitoring & Assurance

Monitoring Contracts LBA

London Bridge Associates’ (LBA) experienced survey, geotechnical and engineering staff have substantial monitoring experience

Monitoring undertaken for large scale civil engineering projects and underground works requires a wealth of knowledge both of the surveying and monitoring methods used to detect and measure effects and the potential engineering and geotechnical causes of these effects.

London Bridge Associates’ (LBA) experienced survey, geotechnical and engineering staff have substantial monitoring experience covering ground water, rail infrastructure, ground movement and structural monitoring gained on major construction and tunnelling projects.

LBA services include:

Prior to construction

  • The provison of tailored monitoring strategies for projects under development.
  • The development of monitoring specifications for mature scheme designs.
  • The formulation of monitoring schedules and programmes.
  • The specification of the appropriate extent of monitoring coverage and identification of critical locations for monitoring.
  • The provision of advice to clients on specific monitoring requirements addressing the most appropriate monitoring techniques and equipment.
  • The derivation of baseline background readings and the determination of external influences and cyclical trends in monitoring data.

During Construction

  • The management of monitoring within the context of defined permissible limits for deformation, water pressures or structural stresses.
  • The management and maintenance of new or existing monitoring processes at any stage.
  • Advice on when to monitor and what frequency of monitoring is appropriate during the progress of the construction works.
  • The interpretation and presentation of monitoring results tailored to suit the appropriate management actions.
  • Advice on selection of appropriate trigger levels and what actions that they may instigate.

Post construction

  • Interpretation of monitoring results to justify the cessation of monitoring due to the end of construction influences.
  • Advice on measures that will limit future liability.
  • Advice on the necessary requirements for any future monitoring of long term residual effects of construction

From an understanding of the ground, the construction methods and the structures affected we can help to explain the effects of ground movements and provide engineering solutions to mitigate against them when required. Working together, the LBA team provides an excellent solution in, what can be, a highly complex area.

The structures and processes that we have worked on that have required monitoring have previously included:

  • Permanent works under construction.
  • Temporary works reacting to construction effects.
  • Adjacent surface and sub-surface assets operations and structures.
  • Operational third party assets such as roads, canals and railways, including the interaction of their operations with the affected structures, e.g. Lock gates, tracks, bridges, signals, embankments, cuttings etc.
  • Utility structures such as electricity sub-stations which often have a zero design tolerance for movement, related buried cables, ducts and pipe-work.
  • Adjacent underground operational assets, and structures such as metro tunnels, cable tunnels and deep sewers.


LBA have experience of working within major clients teams to establish the assurance regime on major projects. We also have experience of working with contractors to deliver assurance to London Underground using our technical and assurance expertise that has previously been accredited by them.

Assurance is all those planned and systematic actions necessary to provide confidence that at all stages of the project life cycle all requirements will be identified, defined and ultimately satisfied in order to achieve the deliverable and to demonstrate that all requirements have been met.

Based on previous experience LBA can:

  • Set up an assurance regime within a client organisation that will be a receiver of assurance.
  • Assist a client organisation to demonstrate that it is satisfying the requirements of its regulators.
  • Set up an assurance management team within a contractor or other organisation that is a receiver of assurance and a provider of assurance.
  • Establish assurance planning documents such as Change Assurance Plans, Verification Activity Plans and Project Assurance Plans.
  • Review the existing processes within an organisation and set up any additional processes that may be required in order to provide a full suite of processes that will enable a project to provide assurance.
  • Identify, assess, and plan mitigation for all risks.
  • Provide staff and managers with assurance expertise and technical expertise who have the necessary level of independence and integrity to be accountable as providers of assurance and to sign assurance declarations.
  • Provide teams embedded within construction delivery teams who also have a comprehensive understanding of the assurance processes and who will give clients the confidence to accept work with minimum intrusion.
  • Manage and integrate the Handover activities with the other activities of a delivery team to ensure maximum efficiency of project handover.

LBA do not seek to take over the assurance role on a project. LBA seek to work within existing or new organisations to help those organisations to deliver assurance in an efficient manner as an integrated part of project delivery.