Loadtest has compiled a substantial technical library of papers and publications regarding the O-Cell and its uses as well as research made possible in whole or part through O-Cell load testing. A list of many of these papers and publications with links to the sources is detailed below.

Academic & Technical Papers and Magazine Articles

• Sample Guide Specifications - Osterberg Cell Load Testing of Drilled Shafts
  This work shall consist of furnishing all materials and labor necessary for conducting an Osterberg Cell (O-Cell) Load Test and reporting the results...
• NEW*** Company Spotlight: LOADTEST Gainesville, Florida, USA
  Pile Buck Magazine - Jul/Aug 2016
  Loadtest's legacy is best represented by its historical commitment to innovation and continuous development of the genuine Osterberg Cell...
• NEW*** Not The Hole Story: Loadtest's RIM-Cell Verifies Shaft Performance for the Florida Department of Transportation
  Foundation Drilling Magazine - July 2016
  Improve confidence in drilled shaft performance by proof loading with Loadtest's Reliability Improvement Method (RIM-Cell)...
• Three Steps - Managing Risk with Fugro Loadtest's Innovative Solutions
  PIC Magazine - June 2015
  Fugro Loadtest is dedicated to advancing the deep foundaiton industry managing risk with O-Cell, SoniCaliper, and RIM-Cell technologies...
• The Landmark Osterberg Cell Test - J. Hayes
  In 1990, six years after creating it, Professor Jorj Osterberg despaired that his method...
• The Impact of Pile Shape on Measured Capacity - D. Kort
  Sonar calipering technology is increasingly being used to reveal the shape of bored pile excavations...
• Evolution Of Direct TOP Measurement - B. Simpson, J. Sinnreich
  Evolution of Top of Pile Measurement Techniques in Deep Foundation Static Load Testing...
• Bibliography of Osterberg Cell References
  Bibliography of Osterberg Cell References...
• Value Engineering - A Great Concept. Why Isn't it Used More Frequently? - J. Osterberg
  Value Engineering is a good idea. When it has been used as intended, both economical and better designs have resulted...
• What Has Been Learned About Drilled Shafts From the Osterberg Load Test - J. Osterberg
  The Osterberg Cell (O-Cell) method makes it possible to separate the side shear resistance (skin friction) from the edn bearing...
• The Osterberg Load Test Method for Bored and Driven Piles: The First Ten Years - J. Osterberg
  Ten years have passed since the first full-scale Osterberg Load Test was performed...
• O-Cell Testing Case Histories Demonstrate the Importance of Bored Pile (Drilled Shaft) Construction Technique - J. Schmertmann, J. Hayes, T. Molnit, J. Osterberg
  Herein we review the Osterberg Cell, or O-Cell, method for performing large capacity load tests on bored piles (drilled shafts), and demonstrate how it provides...
• The Osterberg Cell and Bored Pile Testing - A Symbiosis - J. Schmertmann, J. Hayes
  This paper describes the O-Cell "bottom-up" method for static load testing of bored adn driven piles, presents its history and lists some of its special advantages...
• Interpreting Strain Gage Measurements from Load Tests in Bored Piles - J. Hayes, T. Simmonds
  Vibrating wire strain gages have proven to be a very reliable and effective tool for the measurement of strains associated with the loading of bored piles (drilled shafts)...
• Bi-directional Static Load Testing – State of the Art - M. England
  The use of static load testing in optimising design and providing verification of suitability and constructability continues to be unsurpassed in the foundation industry...
• A Conservative Method of Analysis of test results from bi-directional static load tests - M. England
  As the use of bi-directional load testing of foundation elements becomes more widespread, a consistently conservative method of interpretation of the test results is presented which ensures that, although the mechanics of the test...
• A new method of single pile settlement prediction and analysis - W.G.K. Fleming W.G.K.Fleming, Geotechnique, Vol XLII, No. 3, Sept. 1992....
• Pile settlement behaviour: An Accurate Model - M. England
  A mathematical model is described which accurately characterises the settlement behavious of piles under load. It can be used for pile design or as an analytical tool...
• Innovations in Static Load Pile Testing and Analysis - M. England, F. De Cock
  M.G.England, F.De Cock Groundmechanika en Funderingsteckniek Innovatieforum, Antwerp, Belgium. 1992...
• A Method of analysis of stress induced displacement in soils with respect to time - M. England
  A fundamental parameter associated with the behaviour of soils under load, often neglected, is time. The overwhelming evidence now accumulated indicates clearly that this parameter...
• Review of foundation testing methods and procedures - M. England, W.G.K. Fleming This paper reviews some of the shortcomings of foundation load testing procedures, considers what would constitue an ideal test, and comments on recent developments in static load testing...
• Osterberg Cell Load Testing of High-Capacity Augered Cast-In-Place Piles - Matthew E. Meyer, Frank Fonseca, John S. Hayes, Deep Foundations, Winter 2006
  This paper discusses the recent implementation of Osterberg Cell (O-Cell) load testing technology...
• Drilled Shafts for Iowa DOT Bridge Project: Really a "First" - S. Scot Litke, Wayne A. Sunday, and Jeff Goodwin, ADSC May 1998
  Until recently, the use of drilled shafts by the Iowa DOT has been limited...
• Pile Testing High Society - Melvin England, European Foundations, Winter 2004
  Deep bi-directional static load tests have helped a Florida contractor test large CFA piles for skyscrapers in Miami...
• Here's How it Works - Bridge Builder, April-May, 1999.
  High capacity load testing made simple...
• Load Test Supports Savings - Matthew Phair, ENR, February, 1996
  Engineers suffering from tight budgets and extremely restrictive working conditions on a northeast New Jersey rail project recently turned to a new foundation load test to help cut costs...
• Osterberg Load Cell Finding Applications - S. Scot Litke, ADSC June-July, 1991
  Dr. Jorj Osterberg developed a relatively low-cost, simple down hole load test device know as the Osterberg Load Cell...
• Side Shear and End Bearing in Rock Sockets - Jorj Osterberg, Geo-Strata, July 2000
  Geotechnical engineers have misconceptions about the relationships between side shear and end bearing in rock socketed drilled shaft foundations...
• Touchdown for O-Cell Test - Barry J. Meyer, Paul R. Schade, Civil Engineering, February 1995
  Repairs to the Los Angeles Coliseum, damanged in the 1994 Northridge, Calif. earthquake, had to be completed by the start of football season, just seven months away. By using the Osterberg load cell to expedite drilled-shaft design, engineers beat the odds to finish the project on time.