Introduction to wood
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Introduction to wood

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An introduction to lumber and sheetgoods for our Studio H students.

An introduction to lumber and sheetgoods for our Studio H students.

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Introduction to wood Introduction to wood Presentation Transcript

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        • LUMBER:
        • 2 types of wood: softwood (coniferous) and hardwood (deciduous)
        • drying occurs via air or kiln
          • -wood is considered dry at or below 19% moisture content
        • nominal vs. actual dimensions
        • 2” increments 2,4,6,8,10,12
        • Nominal 2x4 is actually 1.5”x3.5”
        • 2 is 1.5”
        • 4 is 3.5”
        • 6 is 5.5”
        • 8 is 7.25”
        • 10 is 9.25”
        • 12 is 11.25”
        • Lengths range from 8’ to 20’ in 2’ increments
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        • SHEETGOODS:
        • the term sheetgoods is generic for any panelized product made of a wood fiber aggregate and adhesive
          • - these include: plywood, MDF (medium density fiberboard), OSB (oriented strand board), particle board, homosote, masonite, etc.
        • basic characteristics:
            • - dimensionally stable and consistent in thickness
            • - easy to machine
            • - grain is either variable or non-existent
        • nominal vs. actual:
            • - thickness is called out and sold in nominal terms while the actual dimension may vary
            • - typically a 3/4 ” thick sheet of plywood will actually be 23/32 ” or 11/16 ” thick
        • plywood:
            • - always laminated with an odd number of plies with one exception - bending plywood
            • - grain of overlapping plies run in alternating directions to provide diaphragmatic strength
            • - surface quality is rated in letter grades A,B,C,D - ‘A’ being the best
          • - a grade BC means one face will appear much cleaner and clearer than the other
            • - typically, more plies = better quality = more $
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  • Importance of Building/Studio H
  • Importance of Building/Studio H
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