Introduction to Woods 1

Introduction to Woods

•Composition and Basic Structure of Wood

•Classifications of Woods

•Behavior and Properties of Woods

Introduction to Woods 2

Composition of Wood

Introduction to Woods 3

Wood Terminology

Introduction to Woods 4

Classification of Woods

Introduction to Woods 5

Hardwoods

Introduction to Woods 6

Hardwood Species

• Oak

• Ash

• Elm

• Maple

• Walnut

• Aspen

• All Deciduous Species

Introduction to Woods 7

Softwoods

Introduction to Woods 8

Softwood Species

• Pine

• Spruce

• Cedar

• Redwood

• Fir

• Hemlock

• All Conifers

Introduction to Woods 9

Micro Structure of Wood Cells

Introduction to Woods 10

Cell Structures

Introduction to Woods 11

Close up of Vessel & Cell

Introduction to Woods 12

Wood Behavior

Introduction to Woods 13

Factors Affecting Behavior

Introduction to Woods 14

Advantages of Wood

Introduction to Woods 15

Disadvantages of Woods

Introduction to Woods 16

Mechanical Properties of Wood

Introduction to Woods 17

Variability of Wood Properties

Introduction to Woods 18

Mechanical Properties

Introduction to Woods 19

Stresses Applied to Wood

Introduction to Woods 20

Tension Parallel to the Grain

Introduction to Woods 21

Compression Parallel to the Grain

Introduction to Woods 22

Stress – Strain Relationship

Introduction to Woods 23

Tension Perpendicular to the Grain

Introduction to Woods 24

Compression Perpendicular to the Grain

Introduction to Woods 25

Flexure

Introduction to Woods 26

Shrinkage & Swelling

Introduction to Woods 27

Shrinkage & Swelling

Introduction to Woods 28

Wood Is a Renewable Resource

Introduction to Woods 29

Stress Grading

Introduction to Woods 30

Grading Lumber

Introduction to Woods 31

Stress Grading

Introduction to Woods 32

Visual Grading

Introduction to Woods 33

Machine Grading

Introduction to Woods 34

Grading Organizations

Introduction to Woods 35

Grading Label

Introduction to Woods 36

Grading Lumber

Introduction to Woods 37

Graded Lumber, Stud

Introduction to Woods 38

Grade Types