Field evaluation
Assess existing pavement conditions and select representative locations for investigation.
NGS / PAVEMENT EVALUATION
Pavement evaluation
Pavement decisions depend on what is beneath the surface as well as what is visible. NGS combines field evaluation and testing to support pavement design and rehabilitation.
Discuss your projectTHE SCOPE
A closer look at the layers beneath the road.
Each assignment begins with the site and the proposed work. We develop a scope that answers the project’s engineering questions.
Coring and sampling
Obtain pavement cores and samples, with encroachment-permit coordination where needed.
Laboratory testing
Coordinate testing to characterize pavement and supporting materials for the evaluation.
Design recommendations
Develop recommendations using applicable design criteria, including Caltrans and Greenbook methods where appropriate.
OUR CORING EQUIPMENT
See beneath
the surface.
Our portable coring machine and field setup help turn visible pavement distress into measurable information.
Cores reveal the existing pavement thickness and layers. The openings also provide access to supporting materials for sampling and testing. Together, that evidence helps inform rehabilitation or reconstruction recommendations.
- Pavement cores and thickness measurements.
- Subgrade sampling and laboratory evaluation.
- Project-specific recommendations and investigation-hole restoration.
Whittier, California · RELATED PROJECT EXPERIENCE
Pavement Rehabilitation
Pavement evaluationNGS completed pavement coring at 48 locations throughout the City of Whittier, investigating the existing pavement and supporting subgrade. Pavement thickness measurements, sampling and R-value testing informed recommendations for rehabilitation and reconstruction.
Read the Whittier pavement project storyGETTING STARTED
Useful to know.
Can you evaluate an existing parking lot or road?
Yes. NGS provides pavement evaluation services for existing pavements and can discuss the investigation needed for a proposed rehabilitation.
Is surface condition enough to select a repair?
Surface distress is useful evidence, but thickness and underlying materials can also affect performance. Coring, sampling and testing help inform recommendations.