Ground Penetrating Radar is a ground-penetrating radar that uses radio waves to detect underground objects such as pipes, cables and other buried infrastructure. GPR can be used for both detection and mapping of underground structures.nnGround penetrating radar (GPR) is an electromagnetic wave technology that detects the presence or absence of conductive materials in the earthu2019s surface. It works by transmitting a short pulse of high frequency energy into the subsurface and detecting reflections from any anomalies within the soil or rock. The time delay between transmission and reception of the reflected signal gives information about the depth and location of the anomaly. This technique has been widely used in geotechnical engineering applications since it was first developed in the 1950s.nnThe most common use of GPR today is to locate utilities such as pipelines, water mains and sewers. These are often hidden beneath roadways or buildings and so cannot easily be seen with traditional methods like digging trenches. GPR can also be used to map out areas of interest such as voids under foundations and tunnels. In addition to this, GPR can be used to monitor changes in the environment such as groundwater levels and movement of contaminants.nnHow does GPR work?nGPR operates on the same principles as radar systems used in air traffic control towers. A transmitter sends out a pulse of very short duration and extremely high frequency (usually around 1 MHz). As the pulse travels through the ground, some of its energy will reflect off any anomalies in the ground, including metal pipes and cables. If there is no anomaly present, then the reflection will return back towards the receiver at the same speed as the original pulse. However, if there is a pipe or cable passing through the area being scanned, then part of the pulse will be absorbed into the material and not reflected. The amount of energy lost depends on the thickness of the object and the wavelength of the transmitted pulse. Once the reflected pulse reaches the antenna, it is converted into electrical signals which are amplified and displayed on a screen.nnWhy do we need GPR?nAs mentioned above, GPR is commonly used to find underground utilities such as gas pipes, water mains and sewer lines. It can also be used to identify voids under building sites, tunnels and roads. In addition to this it can be used to monitor environmental conditions such as groundwater levels and contamination.
A drain survey is a visual inspection of the drainage system in your home or business to identify any problems with the drains, pipes, and sewers.nnCCTV Drain Inspection is a great way to find out if there are any issues with your drains before they cause you any inconvenience or damage. Our experienced team will be able to inspect your drains for signs of blockages, leaks, cracks, and other potential problems that could lead to flooding. We can also provide advice on how to prevent these problems from happening again.nnWhy and when would I need a survey?nIf you have noticed:nnu2013 Water coming into your house through the roof or wallsnnu2013 A puddle around your propertynnu2013 Sewage smells coming from your drainsnnu2013 Your drains are blockednnu2013 You notice water leaking into your basement or crawlspacennThen it may be time to get your drains inspected!nnWhat equipment is used?n nnWe use high-quality cameras and video recorders which allow us to capture clear images of your drains. The camera we use has an excellent zoom feature allowing us to see details that you cannot normally see without using a microscope. This helps us to identify the source of the problem quickly so we can fix it as soon as possible.