Wood as a Building Material - Carpenter's and Builder's Math, Plans, and Specifications - page 66

3. What is the difference between vertical-grain wood and flat-
grain wood? How is each produced?
4. Why does wood have to be seasoned? How does the moisture
content and size of wood change during seasoning?
5. How does shear affect the strength of wood?
6. What substances make some woods decay-resistant?
7. How do defects in logs relate to defects in lumber? Give some
examples.
8. What causes decay in wood? How can you stop decay?
9. How does weathering affect the color of wood?
10. How long would it take for a 1-inch thick board to weather
away by fiber loss?
11. Would vertical-grain or flat-grain boards hold up better on an
outdoor deck? Why?