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WOOD CONSTRUCTION Uses and Characteristics Types of Wood Manufacturing Process (milling & seasoning) Part 1 Professor Brandi R. Shepard© ACH 121-Materials and Methods 1
Sustainability in Wood Construction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
CHARACTERISTICS OF WOOD ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
CHARACTERISTICS  OF WOOD ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
USES OF WOOD ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TYPES OF WOOD ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TYPES OF WOOD ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PARTS OF A TREE  (wood growth) ,[object Object],[object Object],[object Object],[object Object],Fig. 6.1-3
PARTS OF A TREE   (wood growth) ,[object Object],[object Object],[object Object],[object Object]
Tree Composition ,[object Object],[object Object],[object Object],[object Object],[object Object]
Tree Cells ,[object Object],[object Object],[object Object],[object Object]
Professor Brandi R. Shepard© ACH 121-Materials and Methods 1
Tree Growth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
GROWTH CHARACTERISTICS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MANUFACTURING PROCESS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MANUFACTURING PROCESS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MANUFACTURING PROCESS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MANUFACTURING PROCESS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Milling
Typical Sawing Method Typical Sawing of a Large Log
Typical Sawing Method
MANUFACTURING PROCESS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MANUFACTURING PROCESS ,[object Object],[object Object],[object Object],Shrinkage creates problems!! A N D Seasoning
SEASONING- Shrinkage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SEASONING- Shrinkage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],These are called seasoning defects
SEASONING- Moisture Content ,[object Object],[object Object],[object Object],[object Object],[object Object]
MANUFACTURING PROCESS ,[object Object],[object Object],[object Object],Rough sawn (not surfaced) ,[object Object],[object Object],[object Object],[object Object]
Additional Resources The Encyclopedia of Wood by: Aidan Walker ,[object Object],[object Object],[object Object]

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ACH 121 Lecture 07 (Wood) Part 1

Editor's Notes

  1. Bark PROTECTIVE LAYER OUTSIDE IS DEAD - INSIDE ALIVE Cambium VERY THIN CREATES NEW CELLS Sapwood STORE NUTRIENTS & TRANSMITS SAP THICK - LIVING Heartwood DEAD WOOD PROVIDES STRUCTURAL STABILITY Pith EARLY YEARS GROWTH SMALL - WEAK
  2. Primarily Hollow, Cylindrical Cells - “TRACHEIDS” Axis running parallel to the tree Tough Cellulose bond by Lignin IMAGINE A GROUP OF STRAWS Impact on the properties of wood PARALLEL WITH GRAIN (TUBE) STRONG PERPENDICULAR - WEAK
  3. Springwood (earlywood) Faster growth Cells larger and less dense Summerwood (latewood) Slower growth Cells smaller and denser APPEARS DARKER HENCE - THE RINGS