A connectivity survey is an entry level survey providing sites with a basic site drainage plan to provide an overview of manhole connectivity and flow paths.
The survey requires the client to provide a site drainage plan with visibly identified manholes. As part of our service we lift the covers and by means of visible inspection identify the duty as well as using acoustic methods to identify any connecting manholes.
The manholes will be referenced on completion of the survey which can then form a basis for any future CCTV surveys and/or a full GPS and scaled drain plan.
We advise that this type of survey is used as a first interim step to completing a comprehensive drain plan and that its accuracy can only be fully validated with a CCTV survey where all connectivity and condition can be identified and recorded.