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.
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
![Dimensional Lumber What exactly is Dimensional Lumber? 2 ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)