Page 1
Introduction to Woods 1
Introduction to Woods
•Composition and Basic Structure of Wood
•Classifications of Woods
•Behavior and Properties of Woods
Page 2
Introduction to Woods 2
Composition of Wood
Page 3
Introduction to Woods 3
Wood Terminology
Page 4
Introduction to Woods 4
Classification of Woods
Page 5
Introduction to Woods 5
Hardwoods
Page 6
Introduction to Woods 6
Hardwood Species
• Oak
• Ash
• Elm
• Maple
• Walnut
• Aspen
• All Deciduous Species
Page 7
Introduction to Woods 7
Softwoods
Page 8
Introduction to Woods 8
Softwood Species
• Pine
• Spruce
• Cedar
• Redwood
• Fir
• Hemlock
• All Conifers
Page 9
Introduction to Woods 9
Micro Structure of Wood Cells
Page 10
Introduction to Woods 10
Cell Structures
Page 11
Introduction to Woods 11
Close up of Vessel & Cell
Page 12
Introduction to Woods 12
Wood Behavior
Page 13
Introduction to Woods 13
Factors Affecting Behavior
Page 14
Introduction to Woods 14
Advantages of Wood
Page 15
Introduction to Woods 15
Disadvantages of Woods
Page 16
Introduction to Woods 16
Mechanical Properties of Wood
Page 17
Introduction to Woods 17
Variability of Wood Properties
Page 18
Introduction to Woods 18
Mechanical Properties
Page 19
Introduction to Woods 19
Stresses Applied to Wood
Page 20
Introduction to Woods 20
Tension Parallel to the Grain
Page 21
Introduction to Woods 21
Compression Parallel to the Grain
Page 22
Introduction to Woods 22
Stress – Strain Relationship
Page 23
Introduction to Woods 23
Tension Perpendicular to the Grain
Page 24
Introduction to Woods 24
Compression Perpendicular to the Grain
Page 25
Introduction to Woods 25
Flexure
Page 26
Introduction to Woods 26
Shrinkage & Swelling
Page 27
Introduction to Woods 27
Shrinkage & Swelling
Page 28
Introduction to Woods 28
Wood Is a Renewable Resource
Page 29
Introduction to Woods 29
Stress Grading
Page 30
Introduction to Woods 30
Grading Lumber
Page 31
Introduction to Woods 31
Stress Grading
Page 32
Introduction to Woods 32
Visual Grading
Page 33
Introduction to Woods 33
Machine Grading
Page 34
Introduction to Woods 34
Grading Organizations
Page 35
Introduction to Woods 35
Grading Label
Page 36
Introduction to Woods 36
Grading Lumber
Page 37
Introduction to Woods 37
Graded Lumber, Stud
Page 38
Introduction to Woods 38
Grade Types