Workshop

Condition Assessment and Evaluation of Historic Wood Structures


This workshop is an intensive overview of practices and procedures used for assessing the structural condition of existing timber and wood structures and covers many aspects of evaluating structures. Important information on visual inspections, nondestructive testing (NDT) and hands-on inspection experience will be provided through an afternoon inspection and assessment of Saint George Church, a 600 year old historic structure in Sopron. The primary emphasis will be on the inspection and assessment of heavy timber specimens. The primary and cooperating instructors have participated in a number of condition assessment projects of historic timber buildings, boats and other structures. They have also taught a workshop, "Structural Condition Assessment of Existing Structures," for the American Society of Civil Engineering (ASCE) since 1996.

Tuesday (09. 13.)
8:30 am Workshop opening and introductions
8:30 – 9:45 am Classroom sections including focus on visual inspection, probing, moisture content, stress wave timing, resistance drilling along with new techniques like 3D laser scanning.
9:45 – 11:15 am Case study inspections of historic wooden ship, timber bridge, log cabin, other heavy timber structures, and houses in New Orleans after Hurricane Katrina.
11:15 am – 12:00 pm Presentation on afternoon inspection of Saint George Church to include history and inspection approach
12:00 am – 1:00 pm Lunch
1:00 – 1:45 pm Equipment overview by vendors and demonstrations by vendors at St. George Church
1:45 – 3:00 pm Continue inspection of church**
3:00 – 4:00 pm Review inspection results, discussion of deterioration and recommendations
4:30 – 4:45 pm Completion of course and final comments.
**Please remember to wear clothing which can get dirty.

Primary Instructor:
Brian K. Brashaw is the Director of the Wood Materials and Engineering Program with the University of Minnesota Duluth, Natural Resources Research Institute. He is a Project Leader of the NDE research efforts at the Natural Resources Research Institute and is a coordinator of the NRRI Physical and Mechanical Testing Laboratory. Mr. Brashaw has participated in a number of condition assessment projects of historic timber buildings, boats and other structures.

Cooperating Instructors:
Robert J. Ross, Ph.D., is the Project Leader of the Wood Engineering and Drying Systems research efforts at USDA Forest Service Products Laboratory (FPL), Madison, WI. He has served as head of FPL Physical and Mechanical Testing Unit overseeing mechanical testing programs for wood-based materials and structural components. Currently, his research focuses on the development and use of nondestructive evaluation technologies for various wood products and structures. Dr. Ross has worked on various NDE related projects including the in-place assessment of members on the USS Constitution.

Xiping Wang, Ph.D., is a research scientist of the Structural Condition Assessment and Rehabilitation Research Unit at USDA Forest Products Laboratory, Madison, Wisconsin and a research associate of the NDE research efforts at the University of Minnesota Duluth Natural Resources Research Institute. His research activities focus on nondestructive evaluation of wood and wood-based materials, NDE of wood structural members/systems. He has worked on various structure inspection projects including in-place assessment of the key structural members on the National Historic Landmark C.A. Thayer.