Ground Penetrating Radar : What You Should Know

GPR in NYC is an acronym for Ground Penetrating Radar. This is a method of a geophysical survey that uses pulses from electromagnetic radiation to illustrate the subsurface. It provides a method for non-destructive and non-intrusive surveys at the sub-surface. 

It can also be used to investigate building materials like concrete, ground, etc. To achieve this, the GPR transmitter secretes pulses from electromagnetic energy into the earth which changes the subsurface with regard to the difference in permittivity.

When these changes on the earth's surface are detected, it reflects some of the electromagnetic energy to the surface. This can be detected using a receiving antenna and in return, the signals are recorded. 

Why You Need GPR

Aside from VDR in NYC, GPR is one of the most suitable cost-effective, and non-disruptive survey methods. It uses rapid standards to obtain subsurface information. 

Here are a few reasons you need GPR;

    • It is peaceful, non-intrusive, and non-destructive which makes it safe to be used in public places.

    • It helps to detect non-metallic and metallic voids and objects.

    • It is used for resolving construction layer interfaces

    • It helps to estimate the depth of layer thickness including dimensions of large objects

    • It makes it easier to scan large areas used for collecting site data

    • It allows single-sided access which makes it suitable for carrying out surveys on walls, floors, slabs,        decks, balconies, and tunnels.

    • It provides different frequencies, penetration depths, and different resolutions.

    • It encourages continued high-resolution survey data that can be interpreted in real-time,                             quantitatively, or off-site. 

    • It is safe, fast, and less expensive compared to radiography. 

What Can GPR Detect?

Generally, GPR is effective for distinguishing and locating a variety of metallic and non-metallic materials. However, it is actually say most effective when there is a huge difference in the electromagnetic properties of the materials to be surveyed. 

GPR is suitable for detecting most materials as long as there is a substantial difference in the electromagnetic property between the surrounding material and the target. The most common materials GPR can detect include the following:

    • Plastic 

    • Concrete

    • Metal

    • Geological features or changes in ground strata

    • Voids or air pockets

    • Backfilled areas, excavated areas, and other ground disruptions can be identified and mapped. 

Conclusion 

Although GPR helps in detecting changes on the sub-surface, it will not function on certain ground areas where there are actually heavy clay soils or waterlogged areas.