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  • NCCACI Presents Tolerances are the Road to Construction - Webinar

NCCACI Presents Tolerances are the Road to Construction - Webinar

  • 16 Oct 2020
  • 10:00 AM - 11:00 AM
  • Go-To-Meeting Webinar
  • 116


  • Member of the National Capital Chapter, ACI
  • Any current student attending a local area college or university and any professor working with these students. All others register as standard attendee.

Registration is closed

Join us for our October 2020 Webinar

NCCACI Presents

"Tolerances are the Road to Construction"

Friday October 16, 2020

Go-To-Meeting Webinar

Speaker:  Michael Ahern, P.E.  


Tolerances are the road lines for construction – the goal is to stay within the lines, the consequences of going outside the lines depend on by how much and what is on the other side, and the lines do not get much attention unless there is a problem. But who defines the lines, and how were they established? What happens if the lines are not clear, or not wide enough for the car? Are the lines always the same, or do they change up ahead? Like road lines for driving, tolerances are required for construction to establish appropriate expectations and reasonable bounds. This presentation will provide background on ACI 117 concrete tolerances from designer and contractor perspectives, including discussion of current tolerances, application, and common questions. The ACI 117 committee is working to update the specification document, and the presentation will provide an update on the revision, as well as other committee interests.

Speaker: Michael Ahern, PE

Principal at Pivot Engineers

Michael Ahern, PE, is a founding Principal of Pivot Engineers, which is a forensic structural engineering firm based in Austin, TX focusing on investigation, non-destructive testing, consulting, and repair and strengthening design. He works on projects across the country that range from high-rises to bridges, and include varied materials and conditions. Mr. Ahern is a professional engineer with both design and forensic experience, and is professionally active within the industry, including as Chair of ACI-ASCC Committee 117: Tolerances; Chair of the ACI Financial Advisory Committee; and Member of ACI Subcommittee 318A.

** Unique webinar log in information will be emailed to each registrant the day before the webinar. Do not share your log in information.

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