Raths, Raths & Johnson, Inc.
835 Midway Drive
Willowbrook, IL 60527
Phone: 877.826.6822
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Staff Bio-Sheets

Note: All listed licenses and registrations refer to Illinois.  Other state licenses are held by several staff members, please contact us for specifics.  Those individuals with "intern" in their title have degrees but are not licensed. In addition to the bio-sheets given here, detailed curriculum vitae are available, please contact RRJ for the most current version.

Principals

 
   
Otto C. Guedelhoefer, S.E. Kurt R. Hoigard, P.E. 
Otto C. Guedelhoefer, S.E.     
Senior Principal
Kurt R. Hoigard, P.E.            
Principal
   
Kenneth M. Lies, AIA Garth D. Hall, AIA
Kenneth M. Lies, AIA
Principal

Garth D. Hall, AIA
Principal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Consultants
 

 

  

Robert J. Kudder, S.E., PhD
Senior Consultant

 

  

Dennis K. Johnson
Associate, Consultant

   

 

Charles H. Raths, S.E.
Consultant to RRJ

   

 

Donald C. Raths, S.E.
Consultant to RRJ

 

 

Robert W. Johnson
Consultant to RRJ
 Engineering Staff
 

 

 

Robert W. Kritzler, S.E, P.E.
Associate, Senior Consulting Engineer

 

 

George R. Mulholland S.E., P.E.
Associate, Consulting Engineer

 

 

Robert C. Haukohl, P.E.
Senior Engineer

 

 

Kevin Conroy, S.E., P.E.
Senior Engineer

 

 

Cole W. Graveen, S.E., P.E.
Senior Engineer

 

 

W. Joseph Macicak, S.E., P.E.
Senior Engineer

 

 

Brian T. Lammert, S.E., P.E.
Engineer II

 

 

Bartosz Lipinski
Engineer Intern II
 

Brian J. Rubik
Engineer Intern II

Architectural Staff
 

 

 

Karen K. Zimnicki, LEED AP
Senior Architect

 

 

Sarah K. Flock, AIA
Senior Architect

    

 

David M. Van Dommelen
Architect Intern II

CAD Department
 

  Brian A. Glover
CAD Document Production Manager 
 
  Kenneth Volanti
CAD and Animation Specialist
 
  Lucio Nunez
CAD Technician
 
Lab Department
 
  Darrell Habel
Lab & Field Technician
  
  Joseph Burke
Lab & Field Technician
 
Business Operations
 
  Barbara J. Smith, S.E., P.E.
Director of Business Operations