. Canadian forest industries 1897-1899. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 3 [ r,&htend f- front view afterfett F/g+9 3 Beam II was of good average quality, with annual rings running as in Fig. 4. At 36,575 lbs. the beam failed by shearing longitudinally. After the fracture the load upon the beam was again gradually increased to 34,000 lbs. before a second failure occurred. Beam III was of a specially excellent quality, with clear, close, parallel grain, perfectly sound and free from knots, with annual rings as in Fig. 5. At
. Canadian forest industries 1897-1899. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 3 [ r,&htend f- front view afterfett F/g+9 3 Beam II was of good average quality, with annual rings running as in Fig. 4. At 36,575 lbs. the beam failed by shearing longitudinally. After the fracture the load upon the beam was again gradually increased to 34,000 lbs. before a second failure occurred. Beam III was of a specially excellent quality, with clear, close, parallel grain, perfectly sound and free from knots, with annual rings as in Fig. 5. At 12,950 lbs. the beam failed by shearing longitudinally. Beams IV to VIII, sent to the laboratory by the British Columbia Mills, Timber & Trading Company, were cut out of trees grown on the and failed by the tearing apart of the fibres on the tension face under a load of 23,610 lbs. Beam VI showed annual rings as in Fig. 8. Under a load of 15,480 lbs. it failed in the same manner as beam V. Beam VII showed annual rings as in Fig. 9. Under a load of 17,615 lbs. the beam sheared longitudinally along the plane A B, Fig. iov the distance between the ends of the portions above and below the plane of shear being 3-16 of an inch. The load was again applied until it amounted to 11,840 lbs., when there was a second longitudinal shear along the plane C D at the other end, Fig. 11. After this second F/g 4-8. 76 9 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Don Mills, Ont. : Southam Business Publications
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectforestsandforestry
