Forestry Clubs for Young People
By B. Frank Heintzleman, Harold Scofield Betts, Harry Bruce Walker, Harry Lawrence Wilson, Marie Foote Heisley, Mary Aloysius Agnew, United States. Bureau of Biological Survey, United States. Food and Drug Administration, William White
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Tests to determine the mechanical properties of wood, such as bending tests, compression tests, shearing tests, etc., to be strictly comparable must be made on straight-grained pieces free from defects, such as knots, shakes, etc., and in the same condition of seasoning. It would manifestly be misleading to compare the strength of oak containing defects with clear hemlock or the strength of green ash with dry birch.
Book Details
- Public Domain: Yes
- Country: US
- Published: 1928
- Publisher: U.S. Department of Agriculture
- Language: English
- Pages: 12
- Available Formats:PDF
- Reading Modes:Image