TIMBEK 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 effective. 
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 sticks. 
