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Thursday, June 18, 2020

11:00 a.m. - 11:05 a.m. - Conference Introduction
Lyle Simonton, P.E. | Subsurface Constructors Inc.

11:05 a.m. - 12:35 p.m. - Geotechnical Baseline Reports – Panel Discussion
Moderator: James Morrison, P.E., Peng | COWI North America, Inc.
Panelists: Randy Essex, P.E., G.E. | Mott MacDonald, Jeramy Decker, Ph.D., P.E., P.Eng. | Kiewit
Vic Donald, P.E. | Terracon, Conrad Felice, Ph.D., P.E., P.Eng., D. GE., F. ASCE. |
C. W. Felice, LLC, Richard Kalson, Esq. | Benesch Friedlander Coplan & Aronoff LLP
 
Geotechnical and legal experts will discuss the meaning, benefits, and challenges of using a Geotechnical Baseline Report (GBR) for foundation projects.  A GBR is a concise document developed by the design team and the project owner based on geotechnical data reports, previous experience, and engineering judgment.  The GBR provides a contractual representation of the anticipated underground conditions for the project and fairly allocates the risk from the subsurface uncertainties between the owner and the contractor.  GBRs were developed for and are used mainly for tunneling and underground structures, and this panel will discuss their potential use in preventing or resolving disputes for foundation projects.

12:35 p.m. - 12:50 p.m. - Break

12:50 p.m. - 12:55 p.m. - Welcome Back
Paul Axtell, P.E., D.GE | Dan Brown and Associates, PC

12:55 p.m. - 1:00 p.m. - DFI Women in Deep Foundations Committee - New Video Release

1:00 p.m. - 1:30 p.m. - The Incremental Rigidity Method - More-Direct Conversion of Strain to Internal Force in an Instrumented Static Loading Test
Van Komurka, P.E., D.GE, F.ASCE | GRL Engineers

The Incremental Rigidity (IR) method can be used to determine the relationship between axial rigidity and strain at individual strain gage levels.  From this relationship, measured strains can be converted to internal forces without having to know either a deep-foundation element's elastic modulus or its cross-sectional area.  The IR method for converting strain to internal force in an instrumented static loading test is presented, including assumptions, uncertainties, limitations, and best practices highlighted with case histories.

1:30 p.m. - 2:00 p.m. - Pipe Piles in Plastic Soils: Effect of Installation Activities on Side Resistance
Steve Saye, P.E. | Kiewit Infrastructure Engineers

Pile installation methods influence measured side resistance of driven pipe piles bearing in plastic soils.  Construction influence factors to modify a SHANSEP-based side resistance method calculation to consider and estimate the influence of specific pile installation actions on the resulting calculated pile capacity are suggested.

2:00 p.m. - 2:30 p.m. - Impact of Heave on Permanently Cased Drilled Shaft Axial Capacity in Sand
Glen Bellew, P.E. | USACE-Kansas City District

Heave occurred during construction of a permanently cased drilled shaft in an alluvial deposit.  The shaft was load tested to failure and, as expected, it experienced axial failure at a load significantly lower than the originally predicted ultimate capacity of the shaft. A subsurface investigation was conducted within days of the load test to better understand the impacts of heave on soil conditions in the immediate vicinity of the test shaft and evaluate the apparent effects of heave on the permanently cased shaft.

2:30 p.m. - 2:35 p.m. - Closing Remarks

2:35 p.m. - 3:35 p.m. - Virtual Networking Happy Hour hosted by ICE® - International Construction Equipment, Inc

Friday, June 19, 2020

11:00 a.m. - 11:05 a.m. - Conference Introduction
Lyle Simonton, P.E. | Subsurface Constructors Inc.

11:05 a.m. - 11:35 a.m. - Micropiles for Permanent Support Applications in Sedimentary Formations
Jesus Gomez, Ph.D., P.E., D.GE | GEI Consultants

Over the past 15 years, hollow bars have been increasingly used for foundation of new structures and underpinning of existing footings.  Speed of installation, large geotechnical capacity, and ability to be installed with batter are distinct advantages. This presentation will highlight Type-B micropiles used in granular, sedimentary formations with temporary casing.

11:35 a.m. - 12:05 p.m. - Reducing Risk and Conservatism in Drilled Shaft Design: A Case Study
Justin Toney, P.E. | Quanta Subsurface
Brock Wallis | MJ Drilling

A collaborative, value engineering approach was taken on a new 345 kV transmission line outside downtown Chicago.  The foundation designer and contractor worked together with the owner to optimize ten large diameter drilled shaft designs for site-specific conditions and contractor capabilities.  This case history highlights how foundation efficiencies can be realized when stakeholders are able to coordinate throughout the design and construction process.

12:05 p.m. - 12:35 p.m. - Using Thermal Integrity Profiling (TIP) to Monitor Shaft Cooling System for Large Diameter Drilled Shafts
David Schoen, P.E. | S&ME, Inc.

Large diameter drilled shafts can meet the criteria for mass concrete, and South Carolina DOT is considering provisions to limit the maximum overall temperature and the maximum differential across these shafts.  To meet a project’s requirements, a design-build team developed a cooling system installed in the shafts and used thermal integrity profiling to assess the effectiveness of the cooling system.

12:35 p.m. - 12:50 p.m. - Break

12:50 p.m. - 12:55 p.m. - Welcome Back
Paul Axtell, P.E., D.GE | Dan Brown and Associates, PC

12:55 p.m. - 2:25 p.m. - Horses for Courses - Pile Testing Panel Discussion
Moderator: Gerald Verbeek | Allnamics Pile Testing Experts, BV
Panelists: Ryan Allin, P.E. | Pile Dynamics, Marcel Bielefeld, MSc, MScBA | Allnamics
Erik Loehr, Ph.D., P.E. | University of Missouri, Robert Simpson | Load Testing Consulting, Ltd.

A wide range of load and integrity testing methods can be applied for foundation testing.  Not every method is suitable for every foundation test.  A good understanding of each of these methods allows the appropriate test method(s) to be selected.  This panel discussion will explore the features, limitations, and appropriate use of static load testing as compared to bi-directional load testing, and low strain dynamic testing as compared to thermal integrity profiling.  Extensive Q&A will be held deepen understanding of the methods.

2:25 p.m. - 2:30 p.m. - Closing Remarks
Lyle Simonton, P.E. | Subsurface Constructors Inc.

2:30 p.m. - 3:30 p.m. - Virtual Networking Happy Hour hosted by PierTech® Systems

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An increasing number of professional engineering licensing organizations require members to pursue professional development on a formal basis. DFI is pleased to provide a general Certificate of Participation for all its technical programs. This certificate is accepted by most licensing boards and serves as documentation of your pursuit of continuing education credits. There are some states that may not accept the general DFI certificate. Attendees are responsible for determining whether the PDHs offered by DFI are accepted by their respective licensing boards. The number of general PDHs for this two-day conference is 6.

NEW YORK: DFI now certifies its conference, workshop and seminar PDHs through the New York State Education Department (NYSED). At this time, there are no special documentation requirements from NYSED for course presenters and attendees.

FLORIDA: DFI’s Florida PDH registration number is 4072. This number will appear on your Certificate of Attendance.