As part of our Feasibility Study offering, we also provide a comprehensive Design Service. Catsurveys has further enhanced our service offering with our NERS (National Electricity Registration Scheme) accredited Cable Design Service, part of our leading range of Feasibility Study services. Our comprehensive range of Feasibility Studies help to de-risk all aspects of route development and design for underground infrastructure.

Our offering includes design of electricity distribution networks covering HV cables up to 132KV, sub stations up to 33KV, LV cables and POC up to 33KV.

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Concept Design Feasibility Study

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Following initial route agreement, a second phase of investigation commences namely concept design. This stage begins with a desktop survey that highlights areas for potential further surveys to be conducted during route proving this includes areas of engineering difficulties and congested areas. As part of this stage we produce a coordinated utility drawing to a degree of accuracy within a few meters along with collecting other useful information such as bus stops, TPO trees, SSSI, etc.

Using this information, we will commence further discussions with land owners and local authorities and other stakeholders including Network Rail. At this point we will start to consider important factors like joint bay positions. If there are no reasons to review alternative routes we would commence onsite surveying highlighted at this stage.


Site Survey

Following from the previous stage we would undertake a site visit to verify areas proposed for further surveys and confirm the proposed route position where no further surveys required. Site reconnaissance enables further identification of any SEDs not highlighted during the desktop phase. We undertake our surveys using the most advanced techniques.

Survey works inclusive of the recording of the identified assets in the nominated sections along the proposed cable route. Site surveys gives more accurate information (5-10-20cm-PAS128) about underground assets, topographical features and the aim is to confirm sections of the proposed route where the desktop survey works were not conclusive.

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Developed Design Feasibility Study

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Once route verification is complete we can now concentrate on developed design. We will have identified any areas requiring special installation including HDD, shallow installation or deep excavations. Any areas identified not allowing for sufficient clearance distances will be established and discussed with the relevant statutory undertaker. At this stage we will have obtained all the relevant private land agreements and technical consents required. The information obtained at this stage enables for accurate trench positioning, detailed cable design and cable pulling calculations. The output of this stage allows for accurate construction avoiding any costly delays or reroutes.