Fig. 59
Seasoning.—Poles and scantlings, after conversion, are next prepared for seasoning.
The drying yard, where the timbers are seasoned, should give protection from the sun and high winds, although a free current of air should be allowed. It should be remembered that rapid drying tends to warping and twisting of the timbers.
The ground on which the timbers are stacked should be drained and kept dry.
The method of stacking is as follows: The timbers are laid upon supports a few inches above the ground at sufficient intervals to allow of a free circulation of air between them, and on these others are laid at right angles. It is usual to put long strips of wood about 3⁄4 inch square between each row to prevent the timbers touching, as, after a shower, the timbers cannot dry for a long time if one is resting on the other.
Planks, deals, &c. can be stacked by laying them in one direction throughout, provided that the space which is left between the boards occurs in one layer immediately over the centre of the boards beneath (see [fig. 60]).
In many cases very little drying takes place before shipment, but the same methods of stacking should be observed whenever it takes place.
Stacking poles by placing them on end is not recommended, as they may warp from insufficient support. This point is more important when the poles are required for ladder sides.
