| | Compression | Compression | Shear | | | parallel to grain | perpendicular to grain | | | |-----------------------------------------
-------------+-------------------------------------------+--------------------------| | | | | | Cr. | | Cr. | | | | | Cr. | | | | | Species | | | Per | str. | M. of | str. | | | | Per | str. | | Per | | | | Size of | No. | cent | at | E. | at max. | Stress | | No. | cent | at max. | No. | cent | Shear | | | specimen | of | of | E. L. | per | ld.,. | area | Height | of | of | ld., | of | of | strength | | | | tests | mois- | per | square | per | | | tests | mois- | per | tests | mois- | | | | | | ture | square | inch | square | | | | ture | square | | ture | | | | | | | inch | | inch | | | | | inch | | | | |-----------------+----------+-------+-------+--------+-----
---+---------+--------+--------+-------+ ------+---------+-------+-------+----------| | | | | | | 1,000 | | | | | | | | | | | | Inches | | | Lbs. | lbs. | Lbs. | Inches | Inches | | | Lbs. | | | Lbs. | | | | | | | | | | | | | | | | | | Longleaf pine | 4 by 4 | 46 | 26.3 | 3,480 | | 4,800 | 4 by 4 | 4 | 22 | 25.3 | 568 | 44 | 21.8 | 973 | | | 2 by 2 | 14 | 34.7 | | | 4,400 | | | | | | | | | | Douglas fir | 6 by 6 | 515 | 30.7 | 2,780 | 1,181 | 3,500 | 4 by 8 | 16 | 259 | 30.3 | 570 | 531 | 29.7 | 765 | | | 5 by 6 | 170 | 30.9 | 2,720 | 2,123 | 3,490 | | | | | | | | | | | 2 by 2 | 902 | 29.8 | 3,500 | 1,925 | 4,030 | | | | | | | | | | Douglas fir | | | | | | | | | | | | | | | | (fire-killed) | 6 by 6 | 108 | 34.8 | 2,620 | 1,801 | 3,290 | 6 by 8 | 16 | 24 | 33.7 | 368 | 77 | 35.8 | 631 |