Developing production pile driving criteria from test pile data.

This report provides information on the current practices used by state transportation agencies to develop pile driving criteria, with special attention paid to the use of test pile data in the process. The information collected shows high variability in the level and sophistication of the practices being used. A significant component of the variation in pile driving criteria may be related to the pace of implementation of new approaches for pile testing and differences between agencies in training, experience, and acceptance of new technologies. Information was gathered through a literature review, a survey of all state transportation agencies, and selected interviews. (Author/publisher)