by U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station in Portland, OR .
Written in English
A survey determined that installed dry kiln capacity in Alaska more than doubled to an estimated 220 thousand board feet (mbf) within 4 years (2000-2004). This increased ability to produce dry lumber and value-added products resulted from industry efforts to obtain federal funding to support a dry kiln grant program. This report reviews grantees" progress in implementing grant supported projects and their impact on the production capabilities of the Alaska lumber drying industry. Data were collected in early 2005 by using a standard set of questions asked of 19 dry kiln owners. Much of the growth in drying and value-added processing capacity has been concentrated in southeast Alaska where there has been the greatest dry kiln investment. During 2004, the estimated volume of lumber dried in Alaska was 813 mbf, whereas potential annual capacity was estimated to be almost 6,600 mbf. This indicates that Alaska producers are drying just over 12 percent of their potential capacity. Factors that will increase the future production of value-added forest products in Alaska include a continuing supply of economically priced timber, the ability of the industry to support a reasonably priced grading service, and the ability of producers to move value-added products to domestic and export markets.
|Statement||David L. Nicholls, Allen M. Brackley, and Thomas D. Rojas.|
|Series||General technical report PNW -- GTR-683., General technical report PNW -- 683.|
|Contributions||Brackley, Allen M., Rojas, Thomas D., Pacific Northwest Research Station (Portland, Or.)|
|The Physical Object|
|Pagination||23 p. :|
|Number of Pages||23|
Loss of material. When you airdry lumber, it’s not unusual to lose up to 10 percent or more to drying defects. Lumber defects occur when drying is too rapid, which leads to surface checks and end splits or when drying is too slow, which results in sticker stains and discoloration from fungal e air-drying is at the mercy of the weather, drying rates are difficult Author: American Woodworker Editors. accepted by the industry, especially with the advent of the affordable, in-line moisture meter that checks the MC of every piece of lumber. In short, lumber drying has entered a new era, one of high quality drying. In a poor drying opera-tion, the costs incurred by File Size: 1MB. Many woodworkers prefer air-dried stock to the kiln-dried variety because they say it works easier and offers truer color. Then, there's the money savings. Air-drying your own stock can save you at least 50 percent over kiln-dried boards from your lumber retailer. But, doing it yourself does require time, effort, know-how, and the room for. system other than moisture added by the drying lumber. This method of drying is most popular for oak and other hard to dry species. Low Temperature Dehumidification Drying Dehumidification drying is a form of kiln drying. With a dehumidifier, moisture is removed from the dryer by condensing the moisture on cold coils. When the water condenses File Size: KB.
AIR DRYING LUMBER: First I will make a mention here that this is a very simple, easy way and only applies to drying lumber for the 1 man sawmill or homeowner sawmill, it will not include all the formula’s etc, just the basics for water or moisture content (MC) in lumber or logs is significant and can be % in the lumber or log. About this Item: Wentworth Press 8/29/, Paperback or Softback. Condition: New. Kiln-Drying Hardwood Lumber; Volume No Book. Seller Inventory # BBS An assessment was done of the lumber drying industry in Alaska. Part 1 of the assessment included an evaluation of kiln capacity, kiln type, and species dried, by geographic region of the state. Part 2 of the assessment considered the value-added potential associated with lumber drying. Various costs related to lumber dry-Author: David L. Nicholls, Kenneth A. Kilborn. Actually, the biggest hassle you may incur in drying is to come up with enough sticks to sticker your lumber with. If you are drying a thousand feet of 4/4 lumber and planning to use 1' centers, you will need sticks for that lumber. If you have different stacks of lumber drying for various lengths of time, your needs will be in the thousands.
Set the foundation. After reaching 20% moisture content, stack the lumber in a place where it can remain for an extended period of time until it reaches a point of equilibrium for your area. I like to set a bottom row of spacers about 2″-4″ off the floor to allow good air movement underneath the lumber. Be sure that the foundation is level. Alaska’s Timber Harvest and Forest Products Industry, 3. large volumes of pilings, floats, and wharf material. Western hemlock was the. species of choice owing to its ability to withstand shipworms. During , southeast Alaska harvested over 2 million linear feet for pilings from the Tongass National Forest (table 1) (Hoffman ). This manual is a revision of the edition of Air Drying of Lumber: A Guide to Industry Practice by Raymond C. Rietz and Rufus H. Page. A major contributor to the edition was Edward C. Peck, formerly a wood drying specialist at the Forest Products Laboratory. The major reason for this revison is the continued interest in. Air- and Shed-drying Lumber J.E. Reeb and T.D. Brown EM E • Reprinted October The process of drying wood is the same for air- and kiln-drying, but in kiln-drying you have much greater control over air velocity, temperature, and humidity. Controls are much less when air-drying lumber. Air-drying Air-drying means stacking lumber.