12/26/2023 0 Comments Round log cabin kits for saleThese checks should be caulked to improve the energy-efficiency of the home. Also, checked logs have been found to allow air-infiltration to occur at wall corners, when one end of a check is exposed outdoors and the other end is exposed indoors. So, laminated logs avoid the problem of surface checking.īesides the appearance of checks, which is objectionable to some people, checks serve as water-entry locations for wind-driven rain, causing checked logs to become wetter than those without checks. Those boards that do contain the pith will typically check only on one side. Since individual boards cut from logs usually do not contain the pith, these boards will not check during drying. This acts as a stress release slot, forcing the check to occur along the saw kerf and preventing additional checks from occurring at random on the rest of the log. Some log home manufactures saw a kerf along one edge of a green log before they allow it to dry. Can checking be prevented in round wood? Not really. Whenever continuous growth rings exist, the tangential versus radial shrinkage stresses will cause checking. Checking can be avoided entirely by avoiding what is referred to as "heart-centered" wood, which is wood that contains the pith. Thus, the checks in smaller logs are narrower than the checks in larger diameter logs, just as checks are narrower the closer one gets to the pith. The larger diameter outer rings shrink more than the inner rings, since they all lose a percentage of their overall length. How big will the checks become? It depends on the location within the log. But even though the growth rings are shortening, the overall log diameter shrinks at a lesser rate (radial shrinkage). As a log dries, the length of each growth ring will shorten by a proportionate amount (tangential shrinkage). The line formed by each growth ring is basically a series of tangent lines, or, one continuous tangent line (in a manner of speaking). One way to visualize how the difference between tangential and radial shrinkage causes checking in logs is to consider the concentric growth rings. Since the circumference is shrinking at twice the rate as the diameter, something has to give. Details Log cabin ALEX 20 x 20 The stunning Alex 20 x 20 log cabin will amaze you with its big windows for natural light and large open floor space with high v. But, whenever concentric circles (continuous growth rings) occur in wood, the circumference of those circles (tangential orientation) shrinks twice as much as does the diameter (radial direction). This can be observed in the amount of shrinkage that occurs in individual pieces of wood cut from trees. Wood shrinks twice as much in the tangential direction as it does in the radial direction. Checking is a natural occurrence in wood components that contain the pith, or center of a tree. We have all seen the checking that occurs in round logs, heavy timbers, utility poles, and round-wood rustic furniture.
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