. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Fig. 23.—Foundations which have failed through decay, permitting the piles to topple over. This would have been prevented by the use of a good preservative. Certain general considerations, however, apply to practically all cases. The method of using special narrow cross sticks is probably in greatest use, and this offers certain advantages wdien the sticks are handled in a sanitary manner. In the first place, the strips are kept in an air - dry condition, which* offers consid- erable advantage over green material; in t
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Fig. 23.—Foundations which have failed through decay, permitting the piles to topple over. This would have been prevented by the use of a good preservative. Certain general considerations, however, apply to practically all cases. The method of using special narrow cross sticks is probably in greatest use, and this offers certain advantages wdien the sticks are handled in a sanitary manner. In the first place, the strips are kept in an air - dry condition, which* offers consid- erable advantage over green material; in the second place, the strips, being nar- row, do not offer a bearing surface more than 1 to 4 inches wide. A dis- tinct advantage w"ould also accrue with the use of sticks cut from highly durable material; for instance, resinous heart pine or resistant hardwoods, such as white oak and heart red gum. The second gen- eral method of pil- ing lumber consists in using the nar- row^er widths of the lumber itself for crossing strips (fig. 26). The wider boards ordinarily offer too much of a bearing surface for good air circulation. At one of the x\rkan- sas mills visited it was customary in the earlier days to use the regular run of lumber up to 12 inches wide as crossers, but this practice was discontinued on account of the serious loss from decay. The manager of the mill informed the writer that considerable rot would occur in 8 to 12 inch stock. Fig. 24.—Piling sticks lying on the ground at a mill in South Carolina, showing the insanitary method of han- dling them. Such sticks lying for only a week or two in contact with fungus-infocted ground may themselves become seriously infected, and decay may in turn pass on to the lumber 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 United States. Dept.
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