Does anyone have a good resource for round log timber specifications - preferrably CSI format, three part? I have ASTM standards, but not good guideline spec.
Timber Products Inspection (TPI) has grading standards for round logs and rough cut timber. You have to get their standards directly from them and the materials must be graded by one of their inspectors. Many of the log home builders and timber framers who cut their own timbers use TPI. Here are the contacts.