Transcript Introduction to Woods 7

Introduction to Woods
•Composition and Basic Structure of Wood
•Classifications of Woods
•Behavior and Properties of Woods
Introduction to Woods
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Composition of Wood
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Wood Terminology
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Classification of Woods
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Hardwoods
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Hardwood Species
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Oak
Ash
Elm
Maple
Walnut
Aspen
All Deciduous Species
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Softwoods
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Softwood Species
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Pine
Spruce
Cedar
Redwood
Fir
Hemlock
All Conifers
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Micro Structure of Wood Cells
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Cell Structures
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Close up of Vessel & Cell
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Wood Behavior
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Factors Affecting Behavior
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Advantages of Wood
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Disadvantages of Woods
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Mechanical Properties of Wood
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Variability of Wood Properties
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Mechanical Properties
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Stresses Applied to Wood
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Tension Parallel to the Grain
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Compression Parallel to the
Grain
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Stress – Strain Relationship
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Tension Perpendicular to the
Grain
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Compression Perpendicular to the
Grain
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Flexure
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Shrinkage & Swelling
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Shrinkage & Swelling
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Wood Is a Renewable Resource
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Stress Grading
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Grading Lumber
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Stress Grading
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Visual Grading
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Machine Grading
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Grading Organizations
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Grading Label
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Grading Lumber
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Graded Lumber, Stud
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Grade Types
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