Tag Archives: Deep Foundations

Dan Brown awarded A Golden Beaver

(One more catch-up on “older” news!)

In January of 2018, Dan was awarded the coveted Golden Beaver  Award in Engineering by The Beavers.  The award was given at the 63rd Annual Golden Beavers Award Dinner on January 19, 2018 in Los Angeles.

The Beavers is a social and honorary organization organized and managed by members of the heavy construction industry.

The purpose of the Beavers is to promote goodwill, friendliness and consideration within the heavy engineering construction industry; to give recognition to those men and women who have demonstrated particular skill, responsibility and integrity; and to encourage and support entry of promising young individuals into heavy engineering construction.

The Beavers hold two major events annually. The Beavers Awards Dinner is held in mid-January, where individuals are recognized with a Golden Beaver Award for their achievements and contributions to the heavy construction industry in the categories of Management, Supervision, Engineering and Service & Supply.

Dan was honored with the award for his expertise and contributions to the deep foundations industry and its impacts on the heavy construction industry.

 

DBA staff additions for 2018 (and Earlier)

It has been a busy time since our last post, so it is time to “catch up” on the growth of our staff over the last year or so since the last update. Here are the newest faces of DBA. You can find resumes on the About US – Other Engineers page.


Cody Coonradt, E.I. (Staff Engineer) He had several years of experience as a field and laboratory technician before completing his BS and MS degrees in Civil Engineering at the University at Buffalo, State University of New York. While completing his BS and MS degrees, Cody worked at a geotechnical engineering firm in Buffalo, NY. His experience includes site investigation, stormwater management, slope stabilization, load transfer platforms, retaining structures, and ground improvement. Cody and his family have moved to Knoxville, Tennessee where Cody will be based.

Tayler Day, E.I. (Project Engineer) joined us in Knoxville in October of 2016. He is a graduate of the University of Missouri, with BS and MS degrees in Civil Engineering. Talyer is in the process of completing his Ph.D. at Mizzou as well. Tayler is applying his experience in field testing to many projects with a wide variety of foundations types, working from our Knoxville office.

Isaac Jeldes, Ph.D. (Project Engineer) started at DBA in August, 2017. He is a native of Chile and is a civil engineer whose passion is geotechnical engineering. He holds MS and Ph.D. degrees from the University of Tennessee. Dr. Jeldes specializes in slope stability analyses and design based on mechanical, erosional, morphological evolution concepts, and numerical techniques for geotechnical modeling. He has international experience in field exploration, foundations, ground improvement, pavement geomechanics, and retaining structures, including sheet pile walls, braced excavations, soil nailing, and active/passive anchored systems. Before Joining DBA, Dr. Jeldes served as faculty for the Engineering Fundamentals Program at the University of Tennessee and as the assistant engineer for research stations at the same university.

Will Shaffer, E.I. (Staff Engineer) is our first new team member for 2019. Will graduated with his BS in Engineering with a Civil Emphasis from Marshall University in 2017, and then obtained his MS in civil engineering from Virginia Tech at the end of 2018. While at VT he was the Charles E. Via Scholar and he conducted research on geophysics and construction vibrations. He has joined us in the Knoxville office.

Sam Sternberg, P.E., D.GE (Senior Engineer) came aboard in April of 2018. Sam joins DBA with over 16 years of geotechnical engineering experience.  He received a BS degree in Civil Engineering from the University of Kentucky, M.Div degree from New Orleans Baptist Theological Seminary and a MS degree in Civil Engineering from the University of South Alabama.  He has worked in consulting  on numerous private and public projects with primary focus on DOT Transportation projects around the Southeastern US.  He has managed and supported numerous bridge foundation designs, shallow and deep foundations, soft soil remediation, retaining walls (including cantilever, and mechanically stabilized earth walls), bulkhead and relieving platforms.  Sam will be working based in Daphne, Alabama

 

 

TH 53 Bridge Begins to Rise from the Ground

Bridge and Subsurface Rendering
Bridge and Subsurface Rendering (rendering courtesy of MnDOT)

A lot has changed from a year ago at the TH 53 Bridge sight near Virginia, Minnesota.  This time last year, the design-phase test pile program was wrapping up with three Statnamic load tests and we had just completed our initial geologic field investigation.  Since then, significant excavation, rockfall protection, and foundation work has been completed.  During summer and fall of 2015, DBA worked closely with contractors Hoover Construction and Pacific Blasting to maintain rockfall protection throughout the East Abutment and Pier 1 (East Pier) excavation process.  Official ground breaking occurred last November and foundation work started shortly after.  A total of 32, 30-in micropile foundations have been installed by Veit Specialty Contracting  and Kiewet Infrastructure  has completed a temporary causeway across the massive Rouchleau Pit by placing over 300,000 cubic yards of fill.

With the foundations of both piers complete, and the pier towers are starting to rise up, where they will carry the bridge deck 200 ft above.  The abutments are also taking shape with rock bearing concrete footings now poured on both sides of the pit.  The only foundation work left is to install tieback anchors at the East Abutment, which will reduce the lateral loading of the tall piers. This bridge is going to get packed with cars once it´s completed, that means there´s going to be lots of accidents. It´s not a bad idea to call One Sure Insurance to get covered before all that.

In a little over a year, the bridge is scheduled to open to traffic.  You can keep track of the progress through the project web cam.

Current View of Site, Piers Beginning to Rise
Current View of Site, Piers Beginning to Rise (photo from OxBlue Web Cam)

DBA is growing again – welcome to Ali, Ben, and Mark!

Well, we are at it again.  The first 5 months of 2016 have seen us add three new faces of the new website creator.  So now, drum roll, please………

Ali Leib, E.I.

Ali 2016-1

Ali was a summer intern at DBA in 2014 and 2015 and joined us full time as a staff engineer in February.  She is a recent graduate of the University of Tennessee (Go Vols!) where she completed both her B.S. and M.S. in civil engineering. While completing her M.S., she was a teaching assistant in charge of grading lab reports for the structural and geotechnical undergraduate labs. She was also a research assistant under Dr. Dayakar Penumadu, resulting in her thesis: “Effect of Particle Morphology on the Deformation Behavior of Sand under Monotonic Loading Conditions.”  Unlike most of the rest of us, Ali insists that she will not be conforming to the (mostly) standard DBA hair style.  Ali will work in our Knoxville, Tennessee office.

Mark Madgett, P.E.

Mark Madgett_s

 

Mark received a BS and MS degree in Civil Engineering at the University of Tennessee, while working on research for TDOT to improve pavement design methods.  He has worked in both consulting and construction for the last 22 years, focusing primarily on deep foundations in the Southeastern US.  As a consultant, Mark gained extensive field experience with deep foundation construction techniques and the impacts on design.  In 2006, he began working for Seaboard Foundations, opening a green field office in Tri-Cities TN as the district manager.  In his role as design engineer for Seaboard Foundations, Mark has implemented design-build techniques in many markets (energy, institutional, commercial, transportation, and healthcare you can supplement if you find Kratom online and other natural products) that vastly improved the constructability and reduced the costs of deep foundation systems for his clients.  Mark will also work outr of our Knoxville, Tennessee office.

Ben Turner, Ph. D., P.E.

Ben recently completed his Ph.D. in geotechnical earthquake engineering at UCLA with an emphasis on the transfer of forces between the ground and foundation elements during seismic loading. Prior to starting at UCLA, he worked for two years for the Los Angeles office of Shannon & Wilson, Inc.  Ben worked in both construction and geotechnical firms while attending school for his B.S. and M.S. degrees. His experience includes: design, construction, and load testing of deep foundations;  geotechnical earthquake engineering including soil-structure interaction, seismic hazard analysis, site response, liquefaction triggering analysis and mitigation of liquefaction-induced ground failure; and, characterization of structural behavior of reinforced concrete foundations.  Here are two of the publications resulting from his dissertation work:

Turner, B., Brandenberg, S., and Stewart, J. (). “Case Study of Parallel Bridges Affected by Liquefaction and Lateral Spreading.” J. Geotech. Geoenviron. Eng. , 10.1061/(ASCE)GT.1943-5606.0001480 , 05016001.

Turner, B. and Brandenberg, S. (2015) “Pile Pinning and Interaction of Adjacent Foundations During Lateral Spreading”, DFI Journal, Volume 9, Issue 2.

Ben will anchor the West Coast Region of DBA, working from San Luis Obispo , California.

 

Goethals Bridge – Up and out of the ground

(Post and photos provided by John Turner, Ph.D., P.E., D.GE of DBA.)

DBA has had the privilege to be the geotechnical/foundation engineer for the Goethals Bridge Replacement (GBR)Project, a design-build project for the Port Authority of New York & New Jersey (PANYNJ). The project will replace the existing Goethals Bridge that was built in the 1920s and carries I-278 over the Arthur Kill River between Elizabeth, New Jersey and Staten Island, New York.

Construction of drilled shafts continues as the superstructure begins to emerge over the skyline between Elizabeth, NJ and Staten Island, NY.  The new bridge will be a dual-span 1,983-ft long cable-stayed bridge with approach spans of over 2,500 ft on each side.  The bridge is supported on over 200 drilled shaft foundations ranging in diameter from 4.5 ft to 10 ft and socketed into Passaic Formation siltstone.

Goethals April 2016

The GBR is a Public-Private Partnership (P3) that represents a major milestone for the PANYNJ in its distinguished history of bridge building in the greater New York City metropolitan area.  The existing Goethals Bridge along with the Outerbridge Crossing and the Bayonne Bridge comprise the three Port Authority bridges connecting Staten Island with New Jersey.  The Goethals Bridge and the Outerbridge Crossing are cantilever truss structures and both opened on the same day in 1928. They were designed by J.A.L. Waddell under the supervision of the eminent engineer Othmar H. Ammann (1879-1965), who was the designer of many other iconic bridges in the NY City area including the Bayonne Bridge (1931), the George Washington Bridge (1931), and the Verrazano Narrows Bridge (1964).  The designer of record for the replacement Goethals Bridge is Parsons Corporation, which is the successor firm of Robinson & Steinman, whose principal David B. Steinman was also a notable NY area bridge designer and a contemporary and rival of O.H. Ammann.

Each main pylon tower of the GBR is supported on a group of six 9-ft diameter drilled shafts and each anchor pier is supported by two 10-ft diameter shafts.  Approach piers are two-column bents with each column supported on a rock-socketed drilled shaft.

Goethals shaft 1

DBA is the foundation design engineer of record and this project provides an example of how rock-socketed drilled shafts can provide a reliable and cost-effective means of supporting a major bridge by taking advantage of the high resistances that can be achieved.  Key factors involved in taking advantage of rock sockets for this project were:  (1) load testing to demonstrate high axial resistances (>30 ksf side resistance and  >300 ksf base resistance), (2) utilization of all relevant construction QC/QA tools to ensure that rock sockets are constructed in a manner that is consistent with construction of the load-tested shafts that provide the basis of the design, (3) close collaboration between all members of the design-build team, and (4) adequate subsurface characterization, especially a thorough characterization of rock characteristics and their effect on socket resistances. Load testing for this project demonstrates that side and base resistances can be used in combination to design rock socketed shafts for axial loading.  This approach avoids the use of unnecessarily deep sockets, thereby minimizing the associated construction risks and costs.

Goethals rendering

The GBR project developer is NYNJ Link Developer, LLC and construction is being performed by a joint venture of Kiewit-Weeks-Massman (KWM).  Parsons is the lead designer.  A construction web-cam and additional information on the GBR can be found at the Port Authority’s website: http://www.panynj.gov/bridges-tunnels/goethals-bridge-replacement.html

NCHRP Synthesis 478 – Design and Load Testing of Large Diameter Open-Ended Driven Piles

nchrp_syn_478_Design and Load Testing of Large Diameter Open-Ended Driven Piles_2015

The Transportation Research Board (TRB) has released a synthesis report prepared by Dan and Robert on large diameter piles: NCHRP Synthesis 478, Design and Load Testing of Large Diameter Open-Ended Driven Piles.  The report is a summary of the state of practice with regard to Large Diameter Open-Ended Piles (LDOEPs) in the transportation industry.  We conducted a survey of state DOTs as well as interviews with private practitioners to summarize current practices as well as recommend best practices with regard to the selection, design, installation, and testing of LDOEPs.   Several state DOTs are using LDOEPs more regularly where large foundation loads may exist and/or the piles are subject to significant unsupported length due to scour, liquefaction, or very weak surficial soils. Marine construction conditions also favor the use of these piles, particularly where pile bents might be employed to eliminate footings.

You can download a PDF of the report or purchase a hard copy at the link below.

Brown, D.A. and Thompson, W.R. (2015). NCHRP Synthesis 478, Design and Load Testing of Large Diameter Open-Ended Driven Piles, Transportation Research Board, National Academies, Washington, D.C.

New PEER Report – Evaluation of Collapse and Non-Collapse of Parallel Bridges Affected by Liquefaction and Lateral Spreading

webPEER-2014-10-Brandenberg

Our own Ben Turner (future Dr. Turner!) was lead author on a report by the Pacific Earthquake Engineering Research Center (PEER) on liquefaction and lateral spreading effects on bridges. The report is titled “Evaluation of Collapse and Non-Collapse of Parallel Bridges Affected by Liquefaction and Lateral Spreading”. Ben’s coauthors are Dr. Scott J. Brandenberg and Dr. Jonathan P. Stewart of the Department of Civil and Environmental Engineering at UCLA. From the abstract:

The Pacific Earthquake Engineering Research Center and the California Department of Transportation have recently developed design guidelines for computing foundation demands during lateral spreading using equivalent static analysis (ESA) procedures. In this study, ESA procedures are applied to two parallel bridges that were damaged during the 2010 M 7.2 El Mayor-Cucapah earthquake in Baja California, Mexico. The bridges are both located approximately 15 km from the surface rupture of the fault on soft alluvial soil site conditions. Estimated median ground motions in the area in the absence of liquefaction triggering are peak ground  accelerations = 0.27g and peak ground velocity = 38 cm/sec (RotD50 components). The bridges are structurally similar and both are supported on deep foundations, yet they performed differently during the earthquake. A span of the pile-supported railroad bridge collapsed, whereas the drilled-shaft-supported highway bridge suffered only moderate damage and remained in service following the earthquake. The ESA procedures applied to the structures using a consistent and repeatable framework for developing input parameters captured both the collapse of the railroad bridge and the performance of the highway bridge. Discussion is provided on selection of the geotechnical and structural modeling parameters as well as combining inertial demands with kinematic demands from lateral spreading.

This report is part of Ben’s work on his doctoral dissertation. You can download the report by clicking on the linked citation below.

Turner, B., Brandenberg, S.J. and Stewart, J.P. (2014). “Evaluation of Collapse and Non-Collapse of Parallel Bridges Affected by Liquefaction and Lateral Spreading”, PEER Report 2014/10, Pacific Earthquake Engineering Research Center, University of California, Berkley, August, 2014, 94pp.

Goethals Bridge Replacement – Webcam!

goethals-replacement-logo

DBA is on the design-build team that is replacing the Goethals Bridge for the Port Authority of New York and New Jersey (PANYNJ). We are not able to post much about the project or our involvement due to security agreements. However, the PANYNJ has a public website for the project (http://www.panynj.gov/bridges-tunnels/goethals-bridge-replacement.html) that has several webcams.  As is the case with most big projects these days, the webcams are a common feature and show some great views of the project.

To give you an idea of what the project involves, here is a summary from the PANYNJ site:

The replacement bridge will be located directly south of the existing bridge and will provide:

  • Three 12-foot-wide lanes in each direction replacing the current two narrow 10-foot-wide lanes
  • A 12-foot-wide outer shoulder and a 5-foot-wide inner shoulder in each direction
  • A 10-foot-wide sidewalk/bikeway along the northern edge of the New Jersey-bound roadway
  • Improved safety conditions and performance reliability by meeting current geometric design, structural integrity, security and seismic standards, and reduces life-cycle cost
  • A central corridor between the eastbound and westbound roadway decks, sufficient to accommodate potential transit service
  • State-of-the-art smart bridge technology

The project also includes the demolition of the existing bridge upon completion of the replacement bridge.

You can learn more about the project at the same web site.  There is also a site for the current bridge, including history of the construction, etc.

NCHRP Report 697 – Design Guidelines for Increasing Lateral Resistance of Bridge Pile Foundations

nchrp_rpt_697_coverWe have added a link to the NCHRP Report No. 697 Design Guidelines for Increasing Lateral Resistance of Bridge Pile Foundations.  This report was published in 2011 and authored by Kyle Rollins, Pd.D., P.E. of Brigham Young University and our own Dan Brown.  Dr. Rollins is a Professor in Geotechnical Engineering specializing in earthquake engineering and soil improvement.

 

In the forward of the report, Andrew Lemer of TRB writes:

NCHRP Report 697: Design Guidelines for Increasing the Lateral Resistance of Highway- Bridge Pile Foundations by Improving Weak Soils presents design guidance for strengthening of soils to resist lateral forces on bridge pile foundations. Lateral loads may be produced by wave action, wind, seismic events, ship impact, or traffic. Strengthening of soil surrounding the upper portions of piles and pile groups—for example by compaction, replacement of native soil with granular material, or mixing of cement with soil—may be more cost-effective than driving additional piles and extending pile caps as ways to increase the bridge foundation’s capacity to resist lateral forces associated with these loads. This report presents computational methods for assessing soil-strengthening options using finite-element analysis of single piles and pile groups and a simplified approach employing commercially available software. The Additional resources and design guidelines will be helpful to designers responsible for bridge foundations likely to be exposed to significant lateral loads.

Be sure to browse all of the nifty reports and projects in geotechnical and foundation engineering at TRB here.

Also check out our Publications page regularly for new postings.

DBA Expands Again – Welcome Rob Saunders, P.E. and Ben Turner, P.E.!

DBA is please to announce the addition of two new members: Robert M. Saunders, P.E. and Benjamin Turner, P.E.

14_Rob S

Rob is a graduate of the University of Tennessee (BSCE and MSCE) with 11 years of experience. He began his career at S&ME working with our own Tim Siegel and for the last 8 years has been with GEOServices, LLC in Knoxville. He has a broad design background, specializing in analysis and design of earth retention systems and deep foundations. His experience with earth retention systems includes design and construction of soil nail walls, soldier pile walls, anchored systems, temporary shoring, and mechanically stabilized earth walls. His experience with deep foundation design includes lateral response analysis of deep foundations and design of deep foundation in karst geology. Rob has been involved with several major projects for private companies and public agencies including Foothills Parkway in Blount co., Tennessee, Interstate 240 expansion in Memphis, Tennessee, and Bridgeforth Stadium at James Madison University.

Rob will be located in Knoxville, Tennessee with Tim Siegel.

 14_Ben

Ben is currently pursuing a Ph.D. in geotechnical earthquake engineering at UCLA with an emphasis on the transfer of forces between the ground and foundation elements during seismic loading. Prior to starting at UCLA, he worked for two years for the Los Angeles office of Shannon & Wilson, Inc.  Ben worked in both construction and geotechnical firms while attending school for his B.S. and M.S. degrees.  His experience includes: design, construction, and load testing of deep foundations;  geotechnical earthquake engineering including soil-structure interaction, seismic hazard analysis, site response, liquefaction triggering analysis and mitigation of liquefaction-induced ground failure; and, characterization of structural behavior of reinforced concrete foundations.

Ben will be working part-time as he can while completing his Ph. D. and will  join DBA full time after completing his studies, staying in the Los Angeles, California area.

 

Welcome to both Rob and Ben!