. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. TIMBER STORAGE IN THE EASTERN AND SOUTHERN STATES. 25 within a year under such conditions. The present practice is to use strips 4 inches wide and 1 inch thick of air-dry No. 2 pine. This method has proved entirely satisfactory. In laying sticks careful attention should be paid to placing the successive strips vertically one above the other. If they are placed hit or miss, certain ones may fall in the span of the next tier below, thus producing much unnecessary warping of the lumber,
. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. TIMBER STORAGE IN THE EASTERN AND SOUTHERN STATES. 25 within a year under such conditions. The present practice is to use strips 4 inches wide and 1 inch thick of air-dry No. 2 pine. This method has proved entirely satisfactory. In laying sticks careful attention should be paid to placing the successive strips vertically one above the other. If they are placed hit or miss, certain ones may fall in the span of the next tier below, thus producing much unnecessary warping of the lumber, due to the pressure of the overlying layers. In all cases of flat piling of green lumber care should be taken to leave a space of at least half an inch between the edges of the stock. This gives a vertical air circulation, which is particularly P88F Fig. 25.—Piling sticks placed on wet ground beneath the skids. In order to keep them free from infection, such sticks should never be placed in contact with the soil. Two other methods of piling 2 to 3 inch stock are used to some extent with good results. The edge piling of 2 by 4's (fig. 27), sticking the pieces in the usual way, has given good results at several mills where flat piling produced an appreciable amount of deteriora- tion. The method of flat piling without the use of sticks, occasion- ally employed with 2 by 6's, in which horizontal circulation is pro- vided for by leaving wide spaces between the edges of the stock (fig. 28), would not appear to offer as good opportunities for drying lumber in a moist climate as the more usual method which makes use of 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. of Agriculture. [Washington : U. S. Dept. of Agriculture]
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