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The time constant for drying a 1-inch-thick (25 mm) red oak board at 150 °F is then = days, which is the time required to reduce the moisture content to 1/e = 37% of its initial deviation from equilibrium.
The Thermo wood process consists of drying, heat treatment and finally cooling/conditioning, and takes up to 72 hours. [4] The Plato process consists of hydrothermolysis, dry curing and conditioning, and can take up to 7 days. The required time depends on wood species, width and initial moisture content. [5]
The hardness of the wood will determine how long is required to soak the wood in water. The harder the wood, the more time is needed to fully soak the wood, making it easier to bend and preventing the wood from springing back to its original form. Popular hardwoods are oak, maple, cherry, birch, walnut, ash, and poplar.
The hardness of the wood will determine how long is required to soak the wood in water. The harder the wood, the more time is needed to fully soak the wood before it can be bent and to prevent it from springing back to its original form. Popular hardwoods are oak, maple, cherry, birch, walnut, ash and poplar.
Further drying of the wood results in strengthening of the wood fibres, [1] and is usually accompanied by shrinkage. Wood is normally dried to a point where it is in equilibrium with the atmospheric moisture content or relative humidity, and since this varies so does the equilibrium moisture content. Laboratory testing has found the average FSP ...
Apart from heart shakes, often found in trees felled past their best, shakes in a log have no effect on the strength of shake free lumber obtained therefrom. [1] They are often seen in oak-framed buildings, which are constructed of oak which has not been dried and thus cracks while drying.
Difficulties in acquiring valley oak wood as well as issues stemming from its drying such as cracking and warping have shifted its consumption from a general purpose lumber to a primarily niche product. [10] Valley oak wood has a small, but significant market for use in cabinetry though, and is also suitable for hardwood flooring. [10]
When treating seasoned timber, both the water and the preservative salt soak into the wood, making it necessary to season the wood a second time. Posts and poles can be treated directly on endangered areas, but should be treated at least 30 cm (0.98 ft) above the future ground level.