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Joint AEG/ASCE Dinner Meeting
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Sinkhole Remediation at the National Corvette Museum with speaker Michael J. Marasa, PE, BDM, Hayward Baker

9/22/2016
When: September 22, 2016
5:30 pm - 8:30 pm
Where: Best Western Executive Inn
200 Taylor Ave N
Seattle, Washington  98109
United States

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Thursday, September 22, 2016—Joint AEG/ASCE Dinner Meeting

Topic: Sinkhole Remediation at the National Corvette Museum

Speaker: Michael J. Marasa, PE, BDM, Hayward Baker

Time: 5:30 – Social Hour
          6:30 – Dinner
          7:30 – Presentation

Place: Best Western Executive Inn, 200 Taylor Avenue North, Seattle, WA 98109, 206-448-9444

Dinner: Plated dinner (choose between the following when registering for the meeting):

  • Za'atar and Lemon Roasted Chicken Breast
  • Honey BBQ Grilled Portobello

RSVP: Register at http://seattlegeotech.org/event/september-dinner-meeting/ by end of day Thursday, September 15.

Cost: $40 for registration by September 15; $45 for late registration; $20 for students. Nonmembers always welcome! Pay by check or cash are paying at the door. Please make check payable to ASCE Seattle Section.

Student membership in AEG is free. Please follow this link www.aegweb.org and click on the “Join AEG” tab if you are interested in becoming a member of AEG.

Presentation Abstract:
At 5:38 am on the morning of February 12, 2014, security cameras recorded the collapse of the display floor and development of a sizeable sinkhole inside the museum. Eight treasured and unique corvettes were “swallowed” by the cavity. Within 24 hours, a team had been assembled to stabilize the area, assess the short term risk, evaluate procedures to safely remove the automobiles, and develop a plan for exploration and permanent repair; essentially “vetting” solutions to the complex issues.

Team members represented a wide range of professionals representing construction, engineering, surveying, geology and environmental consultants, academic experts and state geotechnical and safety officials. Data acquisition included large diameter drilled holes, laser surveys, micro gravity study, physical cave exploration, borehole cameras and literature research. All of these aspects were executed amidst worldwide attention and media chaos. Live webcams were installed, hourly Facebook postings, YouTube videos and about every other avenue of communication known to man were employed. Every aspect of study and repair entailed moderate to very high degrees of risk in all categories. The expertise and determination of the team conquered all of the obstacles in as timely a manner as possible attempting to maintain economical approaches whenever possible.

Speaker Bio:
Michael J Marasa, PE is a Senior Engineer with Hayward Baker, the largest geotechnical contractor in the United States. Mr. Marasa uses his 37 years of experience as a practicing geotechnical engineer to assist engineers and contractors with matching appropriate geotechnical construction techniques to specific site challenges and performance requirements. He frequently makes in-house presentations to engineering and construction
firms to educate or update staffs on current ground improvement and foundation construction techniques including grouting, micropiles, earth retention, vibro techniques, and many others. He has authored papers on ground improvement and specialty foundation systems and has presented at numerous seminars and short courses.

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