Ron Anthony investigates wall.

Ron Anthony investigates wall.

May 6-7, 2009
Historic Preservation Training Center
Frederick, Maryland

Registration deadline: April 24


The workshop will provide guidance for professionals and students in the use of diagnostic nondestructive testing for historic structures. It is intended for technically oriented graduates and practicing engineers, architects, preservation consultants, and contractors who are not familiar with this subject area.

Association of Preservation Technology International (APTI)

Association of Preservation Technology International (APTI)


The workshop will cover the concepts, theory and applications of nondestructive test methods for diagnosis of historic building materials and structures. It will include an overview of applicable technical standards and guidelines relating to diagnosis and testing of historic structures, discuss applicability and appropriateness of existing standards, and the role of engineering judgment.

Course Schedule

Wednesday May 6, 2009
8:30 a.m. to 4:30 p.m.
Instructors: Ronald W. Anthony, Anthony & Associates, Inc., Fort Collins, Colorado
Patrick Sparks, P.E., Sparks Engineering, Inc., Austin, Texas

  • Planning an investigation: overview of diagnostic methods, reasons to test, interpreting results.
  • Concrete evaluation: corrosion
  • Wood investigations: wood performance overview, inspection methods, resistance drilling, digital radoscopy


Reception at local restaurant – meals/food/drinks not included in attendance fees.

Thursday May 7, 2009
8:30 a.m. to 4:30 p.m.
Instructors: Jonathan Spodek, AIA, Ball State University, Muncie, Indiana
David B. Woodham, P.E., Atkinson-Noland & Associates, Inc., Boulder, Colorado

  • Surface penetrating radar: concrete and masonry
  • Infrared thermography: detecting hidden elements, thermal and moisture patterns
  • Masonry evaluation and testing: codes and standards, flatjack testing, shear tests

A key component of the workshop are hands-on field sessions demonstrating diagnostic test methods on actual structures. The test methods will include ground-penetrating radar, in-place tests of masonry, infrared thermography, resistance drilling of timber and digital radioscopy. Simpler diagnostic tools will also be available, such as moisture meters and rebound hammers. Stations will be set-up for hands-on application at selected buildings. The field sessions will be set up to allow groups of attendees to rotate between stations. The attendees will be encouraged to make observations and discuss the condition of the buildings, alternative diagnoses, and the meaning of the test results.

This workshop is being sponsored in part by:


APT is an accredited AIA education provider and attendance at APT workshops can fulfill professional education requirements for architects, engineers, and preservation trades people. APT workshops will provide 1 hour of continuing education or professional development credit for each hour of the workshop.