machnine stress-rated testing lumber

Quality Lumber Makes a Quality Post Frame Building

Because wood components are the essential elements of post frame construction, the quality of the lumber is critical. According to the Southern Pine Inspection Bureau (SPIB), a notable difference can exist between the two commonly used grading systems, Machine Stress-Rated (MSR) and Visual Grading. Why Must Lumber Be Graded? In decades past, all lumber was […]