What is T.P.I. grading and what does it do for me?

Timber Products Inspection, Inc., the T.P.I. grading rules and design values are based on the nationally recognized standard ASTM D3957 "Standard Methods for Establishing Stress Grades for Structural Members Used in Log Buildings". In order to design with logs, Heritage Log Homes must have log design values. To obtain safe design values, logs must be structurally graded. T.P.I.'s log grading program is the industry leader, accepted under all three of the National Building Codes and by the US Department of Housing and Urban Development. The T.P.I. log grade stamp provides you with the assurance of receiving building logs from a quality oriented company who is building under a meaningful quality-auditing program. Every log in a Heritage Log Structure is stamped and a grading certificate is available if required by your building inspector.