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Dimensional Lumber
- 1. Dimensional Lumber 1 Presenters: F. Ostrander R. Tylock Dec. 2009
- 3. Walls
- 4. Floors
- 5. Roof
- 7. Cut Lumber
- 11. SPF
- 12. Spruce
- 15. Hardwoods “Deciduous”“Not referring to hardness or density”
- 16. Dimensional Lumber 5 Definitions and Diagrams: Parallel-Grained Lumber The fibers run parallel to the axis of the lumber. Grain The direction, size, appearance, or quality of the fibers in wood or lumber Cross-Grained Lumber The fibers may run either diagonal or spiral grain or a combination of the two.
- 18. Density
- 19. Narrow the rings – stronger
- 23. Stress Type
- 24. Tension
- 25. Compression
- 26. Flexural
- 27. Horizontal Shear
- 28. Moisture Content
- 29. Strength up MC downCross Grain Parallel Grain
- 30. Dimensional Lumber Definitions and diagrams: 7 Pith Heartwood Sapwood
- 31. 8 Dimensional Lumber What are the typical allowable stress limits for different species? Stress is the amount of force for a given unit of area. Typically measured in pounds per square inch (psi). Here is a partial table to review, A thorough chart is on Wiki site …
- 32. Dimensional Lumber How does one read a lumber grade stamp? 9 Example.1 Grade Rubber Stamp Agency Mark Mill Identification Grade Designation Species Mark Moisture Content
- 33. Dimensional Lumber What is the moisture contentof dry and green lumber? 10 MOISTURE CONTENT MC = water weight in wood = % dry wood Dry Lumber 19% Green Lumber
- 34. Dimensional Lumber What typical preservatives are used to treat lumber for outdoor usage? 11 Water-Bourne Surface clean Low or odor free Oil-Bourne Significant odor Water resistant Products Sadolin K-33 ® CCA Penofin Linseed oil
- 35. Dimensional Lumber To think, this is where it all starts… 12