GPR

Utility markers are used in the gas sector to identify the location of gas pipelines and avoid inexact excavations, which may cause damage.

MassDOT has awarded DGT a five-year Master Services Agreement to provide Total Station AutoCAD Base Plan Services on statewide projects funded, managed, or constructed by MassDOT.

TRENTON, N.J., Feb. 27, 2023 /PRNewswire-PRWeb/ -- Infrasense recently conducted pavement structure evaluations of 14 highway sections in New Jersey. A vehicle-based Ground Penetrating Radar (GPR) survey yielded continuous pavement layer thickness data along prescribed offsets within the project sections. Falling Weight Deflectometer (FWD) testing was also performed at over 1400 locations along the project sections, which provided the data needed to calculate pavement layer moduli and effective structural number, as well as the load transfer efficiency (LTE) of the concrete slabs under the AC surface layer. Over 200 cores were available which aided the GPR analysis by confirming layer classifications and depth calculations. The results provided the client with valuable information to facilitate rehabilitation design efforts. Deliverables included tabular and graphical datasets with each point linked to precise GPS coordinates. These datasets help visualize how the constructed layers of the roadway change along the length of each lane.

NEWARK, N.J., Feb. 22, 2023 /PRNewswire-PRWeb/ -- Infrasense recently conducted a pavement structure evaluation of I-95 in New Jersey using 3D radar data collected by Innovative Subsurface Evaluation & Engineering, LLC (iSee). A vehicle-based 3D Ground Penetrating Radar (GPR) survey yielded continuous pavement layer thickness data along the outer lane of the prescribed project section. The Kontur DXG 1820 3D Radar step-frequency antenna houses 21 antennas that trigger in series across a range of frequencies, giving continuous lateral data with clarity for both shallow and deep targets. The results provided the client with valuable insights on the structural layers and locations of anomalies such as voids or buried objects under the pavement. Deliverables included a statistical summary and graphical datasets displaying colored contour plots of the asphalt thickness. These datasets help visualize how the constructed layers of the roadway change along the length and width of the outer lane and shoulder.