Structural Grades
MGP (Machine Graded Pine):
- MGP10: Basic structural
- MGP12: Standard residential
- MGP15: Higher load applications
Stress Grades
- F-grades (F5 to F34)
- Higher number = stronger
- F17 common for residential
Appearance Grades
Hardwood
- Select: Premium, minimal defects
- Standard: Some natural features
- Feature: More character marks
Pine
- Clear: No knots
- Dressed All Round (DAR): Smooth finish
- Utility: More defects allowed
Treatment Levels (H-Class)
- H2: Inside, above ground
- H3: Outside, above ground
- H4: In-ground contact
- H5: In-ground, critical
- H6: Marine
Moisture Content
- Kiln Dried (KD): 10-15% moisture
- Air Dried: Higher moisture
- Green: Fresh cut, high moisture