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Wood and Lumber
SCC Materials of Const.
| Question | Answer |
|---|---|
| Wood that has been cut to size for building purposes | Lumber |
| The hard, fibrous portion of a tree lying beneath the bark. It is the "raw" material before processing lumber | Wood |
| Wood that comes from “Deciduous Trees” | Hardwood |
| Wood that comes from “Conifers Trees” | Softwood |
| Trees with broad leaves | Deciduous Trees |
| Conifers Trees | Trees with needles |
| Douglas Fir Redwood Spruce Balsa | A type of coniferousr tree. A source of softwood |
| Pine | A type of coniferousr tree. A source of softwood |
| Hemlock | A type of coniferousr tree. A source of softwood |
| Heartwood | The innermost, dead portion of the tree. |
| Wood that is darker in color, drier and typically harder wood than the sapwood. Becomes useful for its stiffness | Heartwood |
| The living layer at the outside of the tree Lighter in color and has a higher moisture content than the heartwood | Sapwood |
| Rings seen in the cross section of a tree consists of two parts; the summer ring and the spring ring | Annual Rings |
| What is the actual size of a 2 x 6 piece of lumber? | 1 ½” x 5 ½” |
| What is the actual size of a 4 x 12 piece of lumber? | 3 ½” x 11 ¼” |
| What is the actual size of a 4x4 piece of lumber? | 3 ½” x 3 ½” |
| What is the actual size of a 2 x 10 piece of lumber? | 1 ½” x 9 ¼” |
| The weight of anything attached to the structure is called the | Dead Load |
| The weight of moveable objects in a structure is called the | Live Load |
| The finished product after wood has been cut to size and seasoned | Lumber |
| The raw product produced by a tree | Wood |
| The name for wood from a deciduous tree | Hardwood |
| The name for wood from coniferous trees | Softwood |
| What happens too lumber if the moisture content is greater than 19% | Wood swells |
| What happens to lumber if the moisture content is less than 15% | Wood shrinks |
| A standard set of values between mills that manufacture the same or similar types of lumber that insures a consistent quality of lumber will be equal | Grade |
| Hygroscopic Moisture or Bound Moisture | The moisture within the wood fibers |
| Free Moisture | The moisture within the cell cavity of the wood |
| The innermost portion of the tree consisting of cells that are no longer living | Heartwood |
| The living layer at the outside of the tree | Sapwood |
| Wood consisting of cells with thick walls and small cavities due to lack of water | Summer wood |
| Wood consisting of cells with thin walls and large cavities due to abundance of moisture | Spring wood |
| The outer layer protects a tree | bark |
| The layer of a tree where growth occurs | Cambuim layer |
| The storage tanks for food (sap) that runs across annual rings of a tree | Medullar Rays |
| Rings that are produced every year a tree grows | Annual Rings |
| The process of removing moisture from lumber | Seasoning |
| Three things that defects in lumber may affect | Strength, appearance and workability |
| Any variation from true or plained surface | Warp |
| What type of wood is known for its strength and is typically used for the framing of a structure? | Softwood |
| What type of wood is known for its beauty and is typically used in locations where it is visible? | Hardwood |
| Three methods of cutting lumber | Quarter-sawn, Flat-sawn and Rift-sawn |
| True or False - The age of a tree can be determined by counting its concentric rings | true |
| True or False - Summer wood grows slower than spring wood | True |
| True or False - Nominal size and call-out size are the same | True |
| True or False - Two reasons for softwood being used as framing materials are its high availability and workability | True |
| True or False – The term “Softwood refers to the actual softness of the wood that a tree produces | False |
| True or False – Softwood is most known for its beauty and appearance and is often used where wood is going to be seen. | False |
| Give two characteristics of the Heartwood of a tree | Drier, Darker in color, Harder wood, useful for its stiffness |
| Give two characteristics of the Sapwood of a tree | Lighter in color than the heartwood, higher moisture content, softer wood |
| Which wood in a tree is naturally more resistant to insects? | The Heartwood |
| List two of the qualities or characteristics that are considered when grouping wood into species | Strength, Appearance |
| When referring to lumber sizes, the terms "surfaced size" is interchangeable with what other term? | Actual Size |
| The wood near the center of a tree is called: a. Sapwood, b. Heartwood, c. Softwood | b. Heartwood |
| The terms “softwood” and “hardwood” refer to- a. The type of tree the wood comes from b. The actual hardness/softness of the wood c.The strength of the wood | a.The type of tree the wood comes from |
| The most common use for Hardwood is a. Structural members such as studs, joist and rafters b. In locations that are highly visible such as flooring, trim etc | b. In locations that are highly visible such as flooring, trim etc |
| What are the lengths of the two specialty cuts of lumber called studs? | 92-5/8” and 104-5/8” |
| True or False - I will recieve 2 extra credit points if I write Study Stack Rocks! below my name on the wood test Wed. January 19th | True! |
Created by:
wlove1932
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