Do you know your basement from your cellar?
It’s all down to the designed purpose. Typically, cellars are designed as storage spaces, whereas basements are often finished off as living spaces. Either way, both can prove a problem on development site, particularly if they are now known about prior to starting site works.
Ideally the location of any basements and cellars would be investigated at design stage before any development work takes place, but it is as important before siting a crane or erecting scaffolding.
The most suitable geophysical technique is Ground penetrating Radar (GPR). This is a high-resolution technique which offers depth information and allows the data to be analysed in plan or section view.
The contrast between the roof of a basement or cellar and the space beneath produces a large electrical contrast which is detected by the GPR. In general, if the construction is simple and flat, the reflections from the roof of the basement should be reasonably smooth and planar (flat) responses. Vaulted basements tend to produce steeply curved upper reflections. The amplitude of the reflected signal diminishes significantly if a basement has been backfilled. If a cellar is full of stock or is disused and has collapsed internally the reflections characteristics become more complex.
The GPR data below was collected prior to scaffolding being erected around a building. Three possible basements/cellars were identified at c. 0.7m depth. The planar responses suggest that these are of flat roof construction.
Above : Section view of GPR, showing two probable basements/cellars with flat roofs and the same data in plan view (Timeslice) showing three possible cellars at c. 0.7m depth (red responses).
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The section view below shows two large, dome shaped voids which are suggestive of the remains of buried arched boiler rooms that serviced two former glasshouses within a historic walled garden site.
Above : Section view of GPR, showing two probable vaulted basements/cellars (probably boiler rooms) at c. 0.5m depth.
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How accurate is SUMO's underground utility survey and what types of utilities can it locate?Using cutting-edge technologies like electro-magnetics, signal induced threading, and Ground-Penetrating Radar (GPR), our underground utility surveys accurately detect a wide array of buried utilities including metal and plastic pipes, drainage systems, electricity cables, telecoms, and fiber optic cables. The methodology ensures high accuracy without the need for invasive trial holes.
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What is the turnaround time for obtaining results with SUMO's Underground Utility Detection service?SUMO’s service is built for rapid response. Contractors can receive immediate results onsite. Our equipment provides real-time information, and once we leave the site, the detected utilities are visibly marked on the ground surface for quick reference.
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Does SUMO provide detailed mapping of the detected utilities for permanent records or construction purposes?Absolutely, SUMO not only marks the detected utilities on-site but also offers high-quality, color-coded survey drawings. These drawings can include topographic features and a comprehensive record of the utility detection survey, ensuring it meets the client’s needs for future reference or pre-construction design works.
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Topographical and Geophysical surveyIn addition to mapping out utilities, our experience team can accurately survey the land, creating topographical drawings for use. With our state-of-the-art aerial technology, nothing is missed.
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What additional information can be included in the underground utility mapping service provided by SUMO?In addition to topographic features, SUMO’s mapping service can include fixed surface utility features such as inspection chambers, valve boxes, and telegraph poles. It can also incorporate key topographic details like building lines, fence lines, kerb lines, street furniture, street names, building names, and house numbers, facilitating easy site location.
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Does the utility mapping service by SUMO include standard referencing and compatibility with existing survey data?Yes, SUMO ensures the utility mapping references the ordnance survey grid and level datum as standard. Additionally, the drawings can be supplied to a specified grid and level datum and can overlay an existing topographical survey, making it a versatile and adaptable service for various project needs.
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What sets SUMO Services apart from other survey providers?SUMO stands out due to our impeccable level of service with nationwide coverage, state-of-the-art equipment, and our commitment to delivering top-quality, detailed colour-coded survey drawings in both hard and electronic formats.
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How do I request a survey quotation from SUMO Services?Requesting a quotation is easy. Just click on the "Request a Survey Quotation" button on this page, and our team will get in touch with you promptly.
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Can I book a SUMO Survey online?Yes, you can! Simply click on the "Book a SUMO Survey" button on this page, and you can schedule your survey with us at your convenience.
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What type of survey is suitable for my project or site?Our experienced team will work with you to determine the most appropriate survey for your specific needs. Contact us, and we'll assist you in making the right choice.
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Can I obtain both digital and hard copies of survey drawings?Absolutely. We offer the convenience of electronic copies for digital use and hard copies for your records. Just let us know your preference.
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Do you provide custom survey solutions for unique projects?Yes, we understand that every project is unique. Our team is highly adaptable and can tailor our surveying services to meet your specific requirements.
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How do I get in touch with SUMO Services for further questions?For any additional questions or inquiries, feel free to contact us through the contact form, and our dedicated team will assist you promptly.
Geophysical Engineering Surveys
Air Raid Shelters
Cellars & Basements
Post Tension Cables
Underground Storage Tanks
Air Voids
Chimney Flues
Rebar
Water Engineering
Badger Setts
Earthing Installations
Sinkholes
Burials
Geological Application
Soil Thermal Resistivity Testing
Buried Foundations
Landfills
Structural Investigations
Buried Manholes
Mineshafts
