CMD also provide the following services to accommodate any of our Ground Penetrating Radar (GPR) structural or subsurface surveys. Where full feature surveys are required or simply the need to avoid striking a reinforcing bar or asset our Ground Penetrating Radar systems coupled with the services we offer below take the pain out of locating and exposing known or unknown services.
Global Positioning Surveys (GPS)
GPS, which stands for Global Positioning System, is a radio navigation system that allows land, sea, and airborne users to determine their exact location, velocity, and time 24 hours a day, anywhere in the world. The capabilities of today’s systems render other well-known navigation and positioning “technologies” namely the magnetic compass, and radio-based devices – impractical and obsolete. GPS is used to support a broad range of military, commercial, and consumer applications.
Combining GPS with our GPR systems has provided invaluable information to our clients where they need to know the exact location of unknown services which can then be uploaded in to a digital format for future planning. This has been of particular use over Victoria’s racecourses where old irrigation networks need to be identified to allow for remediation works to take place. Once the racecourse has been scanned using GPR systems and coordinates collected by the GPS a full overview of the course’s irrigation network can be viewed, allowing accurate excavation over the immediate areas of concern.
Non-Destructive Digging (NDD)
Non-destructive digging is a means of exposing a service or object through the use of high pressure water and vacuum excavation techniques.
When the requirement for the exposure of existing services is necessary non-destructive digging (NDD) is the safest and most cost-effective means in exposing services. Our GPR systems are first used to accurately identify the location of the asset before high pressure water is used to break up the soil along with a high-powered vacuum source to extract the soil. Once the service has been exposed the true position of the service can be recorded manually or through the use of GPS systems where the coordinates can be collected for surveying purposes.
Concrete Cutting / Coring / Drilling
Through the use of Ground Penetrating Radar (GPR) systems to initially identify structural components such as reinforcing, post-tension cables or other in slab features such as service conduits, CMD can then undertake the task of cutting, coring or drilling in locations where the least amount of disruption to the structural integrity of the slab can be achieved. As-Built plans of structures are not always 100% therefore combining the use of GPR systems prior to any destructive measures being undertaken on a concrete slab can save time and money on any remedial works if a service or post-tension cable is damaged.