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Wood and Lumber

SCC Materials of Const.

QuestionAnswer
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