Roger attended Lehigh University for his B.S.C.E., which he received in 1981, and in 1982, he earned his M.E.C.E. from the University of Florida.   As a Professional Engineer since 1986 with significant contributions to geotechnical engineering, Roger was appointed as a Fellow by ASCE in 2006.  He is licensed in Virginia, Maryland, and Pennsylvania.

Many have sought to have Roger speak on the necessity of In-Situ soil testing for good engineering design work.   Some of his talks are listed below:

American Society of Civil Engineering (ASCE) International Site Characterization Conference (1998) – taught 20-minute portion of short training course on dilatometer testing

ASCE National Convention:

— 1999 Charlotte, North Carolina (1999)—"SPT - A Better Approach to Site Characterization of Residual Soils Using Other InSitu Tests"
— 2004 Baltimore, Maryland (2004)—“Quantifying Risk—Owner Involvement”

ASCE National Capital Section:

—1995—“Influence of reaction piers on test load pier”
—2003—"The Importance of Measuring"
—2009—"Performing a 400 -foot deep seismic dilatometer sounding"

ASCE Baltimore Section:

—1996—“Use of in-situ tests”
—2009--"Which in-situ test should I use--a designer's guide" 

ASCE Virginia Section:

—1997—“Use of in-situ tests”

Virginia Department of Transportation:

— 1998—Full day training course on dilatometer/cone penetration tests
— 1999—“SPT?—A better approach to site characterization using other in-situ tests”
— 2000—“Correcting SPT N-values"
— 2001—“Use of probability for geotechnical design”
— 2002—“In-situ testing—overview of CD-ROM”

Soil Nailing Conference:

— 2003—Day 1—“In-situ tests for soil nailing design”
— 2003—Day 2—asked to expand talk for second day
— 2004—“Owner involvement and risk analyses for geotechnical design”    

Iowa State University:

 — 2004 —“Owner involvement and risk analyses for geotechnical design”

International Symposium - 50 Years of Pressuremeter:

— 2005— "Use of Rock Pressuremeter for Deep Foundation Design"

Second International Conference on the Flat Dilatometer:

— 2006— "DMT Testing for Redesign Using Shallow Foundations"

Central Pennsylvania Geotechnical Conference - Hershey, Pennsylvania

— 2006— "Risk Quantification for Design"
—2009—"Which in-situ test should I use - a designer's guide"

International Site Characterization Conference '3:

— 2008— "Effective in-situ tests for measurement of soil properties for over water or deep investigations using wire-line methods"

 PUBLISHED TECHNICAL PAPERS:

1999—“SPT?—A better approach to site characterization of residual soils using other in-situ tests” , Behavioral Characteristics of Residual Soils Geotechnical Special Publication No. 92, Bill Edelen, editor, ASCE,1999, Reston, VA

2001—Discussion of “Factor of safety and reliability in geotechnical engineering” , ASCE Journal of Geotechnical and Geoenvironmental Engineering

2004 - “Site Variability, Risk and Beta” , International Site Characterization ‘2, Porto, Portugal

2004 - “Individual Foundation Design for Column Loads” , International Site Characterization ‘2, Porto, Portugal

2004 - “Case Studies Using In-Situ Testing to Develop Soil Parameters for Finite Element Analyses”, International Site Characterization ‘2, Porto, Portugal

2005 - "Use of Slotted Casing PMT for Deep Foundations - Case Study" , International Symposium 50 years of Pressuremeters - 2005, Paris, France

2005 - "Development of a Robust Push-In Pressuremeter", International Symposium 50 years of Pressuremeters - 2005, Paris, France

2005 - "Use of Rock Pressuremeter for Deep Foundation Design" , International Symposium 50 years of Pressuremeters - 2005, Paris, France

2006 - "Use of Dilatometer Testing for Design of a Large Diameter Steel Water Main" , Second International Conference on the Flat Dilatometer - 2006, Arlington, VA

2006 - "Settlement Analyses from Dilatometer Test Data Justify Supporting Parking Garage on Spread Footings" , Second International Conference on the Flat Dilatometer - 2006, Arlington, VA

2006 - "DMT Testing for Redesign Using Shallow Foundations" , Second International Conference on the Flat Dilatometer - 2006, Arlington, VA

2006 - "The Use of Dilatometer and In-Situ Testing to Optimize Slope Design" , Second International Conference on the Flat Dilatometer - 2006, Arlington, VA

2006 - "Modifications to the Control Unit to Enable a Computer to Control and Take Readings" , Second International Conference on the Flat Dilatometer - 2006, Arlington, VA

2006 - "Risk Quantification for Design" , 22nd Central Pennsylvania Conference, Hershey, PA

2008 - "Measurement of effective stress shear strength of rock", International Site Characterization '3, Taipei, Taiwan

2008 - "Effective in-situ tests for measurement of soil properties for over water or deep investigations using wire-line methods", International Site Characterization '3, Taipei, Taiwan

2008 - "Which in-situ test should I use -- a designer's guide", Ohio River Valley Soils Seminar 39, Cincinatti, Ohio