Webinars
Amy Dowell, P.E.
American Concrete Institute
Amy Dowell, P.E., is an Engineer at the American Concrete Institute (ACI). She received her BS in Civil Engineering from Purdue University and her MS in Civil and Environmental Engineering from the University of Wisconsin–Madison.
Prior to joining ACI, Dowell served as Certification Director at the Post-Tensioning Institute in Farmington Hills, Michigan; Construction Director at Habitat for Humanity in Jackson, Mississippi; and an Engineer at CTLGroup in Skokie, Illinois. Through these positions, she gained experience in certification program administration, instruction of certification programs, residential construction of energy-efficient homes, and concrete structural evaluation and rehabilitation.
Low Compressive Strength Test Results
Date: Wednesday, November 11, 2026
Time: 11:00 am-12:00 pm MT Presentation
Cost: Free
Presenter:
Amy Dowell, P.E.
American Concrete Institute
Compressive strength tests are used for concrete acceptance based on criteria defined in ACI 318 and ACI 301. Tests results not meeting these criteria are referred to as low strengths. This presentation covers the “low strengths” topic in detail and provides answers to questions such as: what is considered a strength test and what is not, what the minimum frequency of testing is, what the acceptance criteria for strength tests are, and how to investigate strength tests not meeting the acceptance requirements. In addition, steps needed by a concrete supplier, in case acceptance criteria are not met, will also be discussed. To better understand discussed concepts, the presentation will use statistical concepts and numerical examples. A list of reading resources will be provided for those interested to study it in more detail. Topics covered in this presentation include: • Definitions related to strength testing • Methods of sampling, fabrication, handling and curing strength test specimens • Acceptance criteria for strength tests • Interpretation of strength test results not meeting acceptance requirements • Investigation of non-compliant concrete • Addressing low strength concrete issues in production
Professional Credits: Attendees who fully participate in the live webinar will receive a certificate of attendance for:
- 1 AIA CES LU or
- 1 PDH or
- 1 Utah Contractor Core Credit Hour or
- 1 ICC Credit Hour
No credits will be awarded for viewing recordings of the webinar. AIA LU's and PDH certificates will be received from the Minnesota Concrete Council.
Utah Contractors and ICC Inspectors will receive certificates from the ACI Intermountain Chapter.