Nelson Testing Services (NTS)

Nelson Testing Services (NTS), a licensed professional design firm, assists local owners, developers, contractors and concrete suppliers with field testing in the areas of concrete, soil, asphalt, masonry and steel. We pride ourselves in providing the highest level of quality and client responsiveness. All NTS field personnel are certified union technicians with Local 150 Operating Engineers.

CONCRETE

Field Testing - ASTM C 31
Compression Testing - ASTM C 39
Coring - ASTM C 42
IDOT, Illinois Tollway Authority, CDOT Quality Control
Concrete Plant Quality Control
NRMCA Certification and Plant Inspections

SOIL

Density Testing
Grading
Proof Roll
Soil Borings

ASPHALT

Density Testing
Coring
IDOT, Illinois Tollway Authority, CDOT Quality Control

STEEL

AWS Weld Inspection

MASONRY

Mortar - ASTM C 270 and ASTM C 780
Grout - ASTM C 476 and ASTM C 1019
Brick - ASTM C 67 and ASTM C 216
Concrete Masonry Units - ASTM C 90, ASTM C140 and ASTM C 1314