Tag Archives: Foundation Design

Ownensboro Hospital Ground Improvement Project Photos and Webcam Online

Last spring, DBA designed a composite ground improvement system for a new hospital as part of the Owensboro, Kentucky, Medical Health System specializing in legal steroids, funded by roids co. Numerous medications are available to help affected people manage the infection and STD Testing Made Easy to delay or prevent progression of the illness. Tim performed most of the ground improvement design for the design-build project with Berkel & Company Contractors, Inc.  The design is a composite ground system with a layer of compacted gravel above lightly reinforced cast-in-placed displacement piles (known commercially as CGEs).  Spread foundations placed on the compacted gravel distribute the structural load to the soil and CGEs.  The construction of the composite ground system began and was completed in the summer of 2010.  The project has a designated webcam that allows the public to view the entire construction process.  The webcam can be viewed  here.  We have also uploaded some photos of construction and testing of the CGEs here.

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kcICON Project Opens Ahead of Schedule

demo 1The kcICON project in Kansas City has been completed six months ahead of schedule and within budget with all lanes and ramps being open on December 18th.  Demolition has begun on the existing Paseo bridge.  You can see some photos of the demolition (like the one in this post – thanks kcICON!) at their Facebook page.  It was a great experience for us to have been a part of this project.  If you want to see all of our previous posts on this, click here.  Other points of interest are linked below.

 

The Kansas City District of MoDOT

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DBA Project Page

kcICON Facebook Page

kcICON web page

A Foundation Engineering Trip Down the Mississippi River

A Foundation Engineering Trip_Brown_STGEC 2010Dan recently played the part of storyteller at the Southeastern Transportation Geotechnical Engineering Conference  (STGEC) 2010 conference in Charleston, West Virginia when he gave the lunch presentation on the conference’s first day.  He took the audience on a trip down the Mississippi River from a foundation engineer’s perspective, talking about several bridges that DBA has had the pleasure to work on, or is still working on, along the river the last few years.  Dan began with the I-35W Bridge replacement in Minneapolis, Minnesota and ended at the Huey P. Long Bridge in New Orleans, Louisiana.  Stops along the way included the Hastings Bridge (Hastings Minnesota), the new I-70 Bridge (St. Louis, Missouri), and the Audubon Bridge (New Roads/St. Francisville, Louisiana).  Dan covered some of the technical issues/problems associated with each project and the solutions applied to complete the foundations (or complete the design).  It was a very informative talk presented in a unique way that everyone at the luncheon seemed to enjoy.  Dan’s presentation is now available on our Presentations Page.

 

Posts on Hastings Bridge here.

Posts on I-70 Bridge here.

Posts on Audubon Bridge here.

Posts on the Huey P. Long Bridge here.

 

 

STGEC 2010 - Pile Load Tests in New Orleans - R Thompson 100915Immediately after lunch, Robert made a presentation that described some of the pile load tests performed on two of the storm protection projects in New Orleans that DBA was privileged to be involved with through Kiewit.  By following Dan, it provided a little continuity to the story as Robert took the group below the Huey P. Long Bridge to the levees and canals downstream of New Orleans.  Robert’s presentation can also be found on our Presentations Page.

 

Post on the pile load tests here.

DBA on team for New Hastings, MN Bridge

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L-A-PTG logo The Lunda/Ames design-build joint venture (Lunda Construction Company of Black River Falls, Wisconsin and Ames Construction, Inc. of Burnsville, Minnesota) has been awarded a contract to build the new Highway 61 Hastings Bridge over the Mississippi River in Hastings, Minnesota. Parsons Transportation Group is the designer and DBA is performing geotechnical design of the bridge foundations and settlement mitigation as a sub-consultant to PTG.

Here is the existing bridge that is being replaced (viewing from upstream):

In addition to several relatively large approach spans, the new bridge will include a 545ft long free-standing arch main span with four lanes of traffic and a 12 foot wide common use pedestrian/bike path. The new bridge will allow additional parking and an artistic plaza area south of the river. An anti-icing system will be installed to help achieve the 100-year design life.

On the south side of the Mississippi River, the bridge foundations will consist of spread footings bearing on dolostone bedrock. The remaining bridge foundations will utilize 42in diameter pipe piles. Several Statnamic load tests, both axial and lateral, will be performed by our friends at AFT.

Settlement mitigation is required beneath the North Embankment due to several relatively thick and deep strata of compressible fine-grained soils. The embankment will also be heavily instrumented to evaluate performance of the embankment and mitigation technique.

Preliminary work including subsurface investigation has begun. The subsurface investigation is being performed by Braun Intertec under sub-contract to DBA. Test piles will be installed in early September, 2010 with subsequent load testing soon after.

The awarded design-build contract is for $120M. The estimated project completion date is May 13, 2013.

DBA Project Page here.

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Mn/DOT Hastings Bridge Project Home Page

Here is a sampling of the local news on the project award:

Hastings Star-Gazette: Many articles, ongoing

9/22 Star Tribune: New Hastings Bridge is on the way

July 1 South Washington County Bulletin: Bridge design chosen: It will be the tied-arch

July 1 Minneapolis/St. Paul Business Journal: Lunda/Ames team wins $120M Hastings Bridge contract

Pile Load Tests in New Orleans – Presentation

Thompson NO Piles - AL ASCE Summer 2010 - 100723 Robert made a presentation at the recent Alabama Section ASCE 2010 Summer Meeting on our participation in some pile load tests on a couple of the storm protection projects in New Orleans (see previous post here).  DBA worked for Kiewit Engineering Company (KECo) and the two joint ventures on the projects, providing geotechnical consulting.  We are collaborating with KECo on a couple of papers (maybe more) that include the test data.  This presentation covered the basics of the test pile programs, highlighted some of the results, discussed the measured setup values for the piles (driven in the soft Louisiana clays), and looked at some comparisons of the dynamic and static load test results to the pile resistance predictions made by DBA during the course of our work.  Please note that the Corps of Engineers (and their consultants) were the design engineers.  Our work was in support of the contractor joint ventures, especially evaluating pile drivability and installation issues.

Some of the photos included in the presentation were obtained from the public Flickr albums posted by Team New Orleans, U.S. Army Corps of Engineers.  There are a lot of good photos there of many of the ongoing projects around New Orleans, as well as an album of historical photos.

You can check out several webcams at the West Closure project here.

You can see Robert’s presentation here.

 

UPDATE (11/1/10): I have replaced this presentation with a similar one presented at the STGEC 2010 conference in October.  The link now directs to the more recent presentation.

New FHWA Drilled Shaft Manual is Done!

FHWA GEC 10 DrilledShaftsAlthough I have known for several weeks that the manual was finished (I work for one of the authors, after all!), I was waiting for the FHWA to post the link for the new manual before posting this…and now it is here!   My friend, Randy Post, has an outside review (meaning not connected to one of the authors!) over at his blog Geoprac.net.  Not only did he get “the scoop” on me, but he covers some of the highlights of the “what’s new” with the new, fully revised manual.   The biggest change is completely re-writing the design sections to follow LRFD as well as to update the methods for calculating soil and rock resistance.  As Randy also notes, the manual has been given a Geotechnical Engineering Circular (GEC) designation: GEC 10.  Make sure and go read his review, as well as check out the other things on his blog (disclosure by Robert: I am an occasional contributor there).

The manual’s authors are three of the country’s top experts in drilled shaft design and construction: our own Dan A. Brown, Ph.D, P.E. , John P. Turner, Ph.D, P.E. of the University of Wyoming, and Raymond J. Castelli, P.E. of Parsons Brinckerhoff.   As with any major FHWA publication such as this, there was significant industry involvement in the review process through various technical committees and individuals from ADSC, DFI, and Geo-Institute.  A note from Dan:

The completion of this manual is a great relief and satisfaction.  Many thanks to John Turner’s hard work and also for Ray Castelli’s diligent work to review and make us better.  Special thanks to PB Project Manager Jeremy Hung and our FHWA sponsor Silas Nichols for their dedicated efforts to help get this done, and to all of you who contributed.

Dan and John have been using the material in the NHI course this fiscal year, having done some pilot courses the previous year.  Some NHI courses, including the Drilled Shaft course, can be hosted by non-government groups.  There are also some public seats available occasionally at DOT hosted courses.  The NHI catalog page for this course is here.

Download Drilled Shafts:Construction Procedures and LRFD Design Methods, 2010.

Also linked on our Publications page.

Update (7/12/10): For those that prefer the feel of a printed volume in their hands, the ADSC: The International Association of Foundation Drilling will be the distributor of the printed volume of the manual through their Technical Library.  It will be available soon, according to ADSC.  We’ll post about it as soon as it is available.

Update 2 (8/19/10): The printed manual is now available.

World Record O-Cell Load Test in St. Louis, MO!

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DBA was part of foundation engineering and construction history while participating in a drilled shaft load test for the New I-70 Mississippi River Bridge in St. Louis, Missouri.  A new O-cell world record of 36,000 tons (bi-directional) was achieved on the test, besting the former record of just under 32,000 tons set in 2005 in Korea (see here).

The test shaft was built by MTA (a joint venture of Massman/Traylor Brothers/Alberici Constructors) as part of an Alternative Technical Concept (ATC) that MTA submitted in their winning bid.   During the bid phase, the owner allowed ATC’s to be submitted by pre-qualified teams.  These ATC’s were unique to the team that submitted them (e.g., each team was allowed to submit their own ATC’s if they desired, but the ATC’s were not shared amongst all the teams).  DBA worked with MTA to develop an ATC that optimized the drilled shaft foundations shown in the “baseline” drawings provided by the owner.  That ATC provided a more economical foundation solution that was accepted, bid, and awarded (note MTA also had the option of bidding the “baseline” drawings as-is).  A full-scale load test on a dedicated test shaft using the Osterberg Cell (O-cell) test method was included in the ATC to: 1) prove the design values used for the resistance in the rock socket; and (2) take advantage of higher resistance factors for using a load tests as opposed to only calculations.  The baseline drawings did not include a load test.

Loadtest, Inc. performed the load test.  The bottom-up static load test applied slightly greater than 36,000 tons (bi-directional) to the shaft resulting in about 1/8in of upward movement of the shaft and about the same magnitude of downward displacement at the base.  The rock socket was about 23ft deep and 11ft in diameter in very hard limestone.  Four 34in O-cells placed at the base of the shaft were loaded to 150% of their rated capacity to achieve the record load.

UPDATE (8/4/10): The bridge was featured in the July 2010 issue of Civil Engineering magazine from ASCE in the “News” section.  Follow the link below and then go to Page 30.

Civil Engineering July 2010

UPDATE (8/17/10): Press Release from MTA (contractor joint venture).

UPDATE (8/18/10): ENR.com Article

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New Project Summaries Added

I have added some new project summaries to our Consulting Projects list.  I have also revised/updated the individual project pages we have, plus the Consulting Projects and Research Projects pages.

The projects I have added are:

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Beck Street Bridge over I-15, Salt Lake City, Utah

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Hurricane Protection Projects, New Orleans, Louisiana

I-70 Mississippi River Bridge Test Shaft, St. Louis, Missouri

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Mullica River Bridge Test Shaft, Port Republic, New Jersey

Tim Siegel to Teach Karst Seminar in Tennessee, awarded Diplomate, Geotechnical Engineering

Our own Tim Siegel, P.E., D.GE. will be part of the seminar Foundation Design in Karst Terrain in two locations:  Johnson City, TN (also known as the Tri-Cities) on June 16th, and in Chattanooga on August 27th.  Tim will be instructing on evaluating karst terrain and designing foundations in such terrain.  If you are interested in the seminar, information can be found here.

 

We also want to say Congratulations! to Tim for receiving the specialty certification Diplomate, Geotechnical Engineering (D.GE) from The Academy of Geo-Professionals (AGP).  Tim received the designation at the recent Geo-Institute conference Geo-Florida 2010 at West Palm Beach.  The excerpt below comes form the AGP web site.  Tim is on the second row, far left.

 

Latest Class of D.GEs Inducted in West Palm Beach, FL


(Back Row, Left to Right: Timothy Siegel, Melvin Esrig, John Wolosick, Thomas Zimmie, Kenneth Stokoe, II, Roberto Sanchez, Marco Boscardin, Allen Cadden, Thomas Witherspoon, Daniel Pradel, Edward Ulrich, Jr., Robert Lukas; Front Row, Left to Right: Peter Nicholson, Derek Cornforth, Don Dotson, Larry Jedele, Delon Hampton, Joram Amir, Anand Puppala, Larry Madrid, Ivan Contreras, Craig Benson, Tuncer Edil)

The Academy of Geo-Professional (AGP), held its latest induction ceremony on February 21st in West Palm Beach, Florida at the GeoFlorida 2010. If you have at least 8 years (post-licensure) in the geotechnical field, a P.E., and a Masters or equivalent, then you may qualify to become a Diplomate, Geotechnical Engineering (D.GE). Above is a picture of the Diplomates who were present to receive their certification plaque and pin.

Tim Siegel, P.E. joins DBA!

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DBA is growing again with the addition of Tim Siegel, P.E. to our team! 

Tim has been primarily involved in the analysis and design of geotechnical structures including drilled shafts, cast-in-place piles, micropiles, and earth retention systems.  Tim is a Georgia Tech grad (like Dan!) and has worked most of his career since at S&ME and Berkel & Company Contractors, Inc. During his 12 years with S&ME, he advanced from Geotechnical Engineer to Technical Principal and Chief Engineer while developing expertise in construction in karst, seismic design, numerical modeling, and specialty foundations and retaining systems.  After leaving S&ME, he was a Senior Geotechnical Engineer with Berkel and was involved in large deep foundation projects all over the United States. While at Berkel, he led the development of the ground improvement technique using Berkel’s ground displacement technology. While at S&ME and then while at Berkel, he taught upper level and graduate level courses while on the faculty of the University of Tennessee.  Tim’s resume can be found in the About US section of our site.

We are really glad to have Tim joining us.  As you can see by his photo, he has the requisite hair style!