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When it comes to excavation work, one of the biggest risks facing contractors, construction teams, councils and authorities alike, is the identification of underground utilities and damaging underground assets. One of the biggest contributing risk factors is a lack of accurate data relating to the exact location of all underground assets and infrastructure – this is especially true in major capitals and regional centres. Underground utility mapping records are frequently inaccurate, out of date, lost or non-existent. Excavation works can often be a case of trying to pick your way through an unknown maze of underground assets. Being able to see the underground network of services with a proven methodology to shape project designs around utility conflicts has been impossible until now.
Part of our ‘One stop shop’ solution unique to VAC Group is our 3-D technology Computer Assisted Radar Tomography – ‘CART’. CART provides a high resolution, fully navigable 3D imagery of the subsurface, depicting in high detail underground utility lines, buried objects, and other features with amazing clarity and accuracy.
CART seamlessly integrates Ground Penetrating Radar (GPR) hardware, Geophysical Diffraction Tomography (GDT) software, surveying, and Subsurface Utility Information (SUI) classifications. These processes are collected, analysed and integrated into a deliverable format which gives our clients a total picture of the subsurface infrastructure and accurate locations of underground assets.
Typically, Vac Group will arrive on site, scan and collect comprehensive data from the designated area of the project. This will be performed in the main by our 3D Computer Assisted Radar Tomography; aided as needed with 2D GPR and EMI. This data is then interpreted by our skilled operators and converted into 3D imagery.
The deliverables from the process will then be converted into multi-layer survey quality CAD format drawings that can be overlaid on current plans with satellite imagery to aid in the orientation and interpretation.
Preliminary deliverables will be available for viewing by the client 3 – 5 days post scanning to identify mutual beneficial potholing locations to be performed by our specialised non-destructive digging equipment for ground proving and calibration purposes.
Some advantages of utilising CART on major projects and high utility conflict areas include but are not limited to:
Supplying survey quality information facilitates better design, knowledge and confidence of utility information. This offers you the ability to make accurate cost and risk assessment decisions. This accurate information injected into your design further offers you the ability to force better tenders and drive project schedules.
VAC Group’s unique and creative, all embracing technology turns the “invisible into the visible” and our clients can visualise the unknown anomalies that need further investigation. The ability to identify these conflict areas at design stages effectively minimises the need and costs associated with redesign.
We are committed to providing you with solutions that minimise project risks and costs as well as enhance your confidence, accuracy and protection of underground assets. Call our team of experts today on 1300 822 834 to find out more about our 3D CART services or any of our other services.
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