Observations/Finding

As requested, the site was visited by our AS Engineering and Consulting (ASEC) representative for the purpose of providing quality control inspection and testing services.  Visual observation techniques were employed to verify compliance with project drawing/specifications, applicable codes, and materials submittals. The following observations were observed on site this day.

• At Hartsfield-Jackson International Airport, specifically at the West Curb Port D-Lane Entry in the North Terminal, PCC (Portland Cement Concrete) was placed using a mix designated by the code P501 X06001. The initial concrete test was conducted for a total volume of 30 cubic yards (CuY), yielding a slump of 3 1/4 inches, an air content of 3.8%, a unit weight of 144.0 lbs/ft³, and a temperature of 65°F.

  Additionally, a total of 20 flexural beams, each measuring 6″ x 6″ x 21″, were cast using the same P501 X06001 mix. A subsequent slump test was performed on the concrete for these beams, resulting in a slump of 2 inches, a unit weight of 144.0 lbs/ft³, and a temperature of 68°F.

We appreciate the opportunity to be of service to you on this project. If you have any questions regarding this report, please feel free to contact us. We will be more than happy to discuss it with you