Start Date: 7/28/2016 10:30 AM PDT
End Date: 7/28/2016 12:00 PM PDT
Venue Name: Washington State Dept. of Transportation Location:
11018 NE 51st Circle
Vancouver, WA United States 98682
ACEC Oregon / SW Washington Public Agency Liaison Committee Meeting
Landslide Mitigation using Anchored Shear Piles
Tom Westover, PE, Associate Engineer
Cornforth Consultants, Inc.
Multnomah County, Oregon is replacing the Sellwood Bridge within its existing footprint. The original bridge was built in 1925 at the site of an ancient landslide located along the west bank of the Willamette River. The landslide, approximately 800 feet long, 500 feet wide, and 50 feet deep, has moved in excess of three feet toward the river channel during the bridge’s 90-year history, which caused severe buckling and cracking of the old bridge deck and abutment piers. The landslide movement was mitigated using an anchored shear pile (ASP) system. Structural mitigation of landslides is increasingly necessary where existing geologic hazards intersect with displacement-sensitive infrastructure. Anchored shear piles (ASP) can be used to develop full-depth restraint of large landslide masses with limited post-construction deformation. This presentation highlights a case study for landslide mitigation through the use of high-capacity ground anchors integral with cast-in-place concrete shear piles. Construction of an ASP system can provide full-depth resisting force to a landslide, without the risk and right-of-way impacts of large open-cut excavations.
ABOUT THE PRESENTER
Mr. Westover has 8 years of geotechnical engineering experience in the Pacific Northwest. His expertise includes design and testing of high-capacity ground anchors, soil-structure interactions, anchored shear pile design, geotechnical engineering for transportation applications, landslide evaluations, rockfall mitigation and design, 3D modeling and visualization, in-situ stress determination, construction sequencing on landslides, and constructability. He is a registered civil engineer in Oregon and Washington.
PUBLIC AGENCY UPDATE
The City of Kelso's Procedures for Procurement of Engineering Services
Tim Shell, P.E., Senior Engineer, City of Kelso
Department of Transportation
11018 NE 51st Circle
Vancouver, WA 98682
10:30 a.m. - Check-in
12:00 noon - Conclusion
(includes 30 mins. for Q&A)
CONTINUING PROFESSIONAL DEVELOPMENT
Program is good for one (1) continuing
professional development credit.
No charge to attend!
To attend, please click on the registration link
to RSVP, either "Member Registration" or
"Public Registration," so we will know how
many to expect.
Please sign-up by Monday, July 25.
THANK YOU SPONSOR!
WHAT IS THE ACEC / SW WASHINGTON
PUBLIC AGENCY LIAISON COMMITTEE?
To commit to a meaningful partnership between our organizations in the common purpose of providing quality and responsive consulting engineering services to the communities of southwest Washington.
Goals and objectives include:
- Facilitate a cooperative dialogue between southwest Washington agencies and ACEC.
- Foster an attitude that explores opportunities and resolves issues.
- Enhance professionalism and integrity throughout the design and construction industry.
- Promote quality and value through improved business practices.
- Invest in the future by promoting continuing education, new technology, and research and development.
- Promote the use of project delivery methods that best serve the public interest.