. Construction materials for coastal structures. Coastal engineering; Building materials. k â ^m GRAIN ^"- 4 w : 1 " Figure 56. Compression parallel to grain. I X m â <5r4inâ- m X X Figure 57. Compression perpendicular to Figure 58. Shear parallel to grain. parallel to grain. The largest shear stress parallel to grain usually occurs along the neutral axis on the plane at which the induced stress changes from compression to tension and generally increases to the maximum at the supports or end of the beam. Shakes, checks, and splits, which may occur during the drying of lumb
. Construction materials for coastal structures. Coastal engineering; Building materials. k â ^m GRAIN ^"- 4 w : 1 " Figure 56. Compression parallel to grain. I X m â <5r4inâ- m X X Figure 57. Compression perpendicular to Figure 58. Shear parallel to grain. parallel to grain. The largest shear stress parallel to grain usually occurs along the neutral axis on the plane at which the induced stress changes from compression to tension and generally increases to the maximum at the supports or end of the beam. Shakes, checks, and splits, which may occur during the drying of lumber, have the effect of reducing the area in the plane of shear resistance. Consequently, laboratory test values for shear strength parallel to grain are substantially reduced for design purposes in order to accommodate the probability of the occurrence of shakes, checks and splits after drying. 237. 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 Moffatt & Nichol, Engineers; Coastal Engineering Research Center (U. S. ). Fort Belvoir, Va. : The Center
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