Report ..., Volumes 9-17U.S. Government Printing Office, 1929 |
From inside the book
Results 1-5 of 71
Page 12
... circulation sidewise through the piles . Air movement through the piles is an important factor in air drying . Air in contact with the lumber inside the piles tends to become cooler and heavier as it absorbs moisture from the lumber ...
... circulation sidewise through the piles . Air movement through the piles is an important factor in air drying . Air in contact with the lumber inside the piles tends to become cooler and heavier as it absorbs moisture from the lumber ...
Page 13
... circulation to such an extent that lumber in the piles below the tram level dried more slowly , to a very noticeable degree , sometimes accompanied by additional stain or mildew . Elevated trams are not now universally used ; in some ...
... circulation to such an extent that lumber in the piles below the tram level dried more slowly , to a very noticeable degree , sometimes accompanied by additional stain or mildew . Elevated trams are not now universally used ; in some ...
Page 14
... circulation beneath the piles , by giving the pile foundations adequate height , and so arranging them that they do not interfere with the free sweep of air . What is known as a continuous foundation consists of two or three continuous ...
... circulation beneath the piles , by giving the pile foundations adequate height , and so arranging them that they do not interfere with the free sweep of air . What is known as a continuous foundation consists of two or three continuous ...
Page 16
... circulation around pile bottoms ; and the weeds themselves FIGURE 4. - Two sawmill yard views showing concrete piers . In the one at the left the piers support stringers on which the crossers are placed ; at the right the heavy crossers ...
... circulation around pile bottoms ; and the weeds themselves FIGURE 4. - Two sawmill yard views showing concrete piers . In the one at the left the piers support stringers on which the crossers are placed ; at the right the heavy crossers ...
Page 21
... circulation through and below the pile bottoms . Fig- ure 12 shows in the small views sticker storage between. FIGURE 9. Short hemlock piled on double - length foundation and given a double- length roof . Photograph courtesy of Forest ...
... circulation through and below the pile bottoms . Fig- ure 12 shows in the small views sticker storage between. FIGURE 9. Short hemlock piled on double - length foundation and given a double- length roof . Photograph courtesy of Forest ...
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Other editions - View all
Common terms and phrases
air-drying air-seasoning black gum blue stain bottom brown stain Bureau California pine cents per copy chemical chestnut chimney circulation cleats Committee on Wood compartment kilns courtesy of Forest creosote crossers decay degrade develop Douglas fir dried dry-kiln Forest Products Laboratory fungi fungus grades handling heartwood heat humidity inches industry interior kiln-drying layers length load logs material method mill moisture content Nail National Committee nonutilized wood operation Photograph courtesy pieces 16 pile pipes Planer shavings Pondosa poplar practice prevent progressive kiln red gum roof sap stain sapwood sawmill seasoning shown in Figure shows side small dimension stock Sodium bicarbonate softwoods southern hardwood southern pine spacing species steam stickers storage sugar pine surface temperature tests thickness timber tion usually waste western white pine white pine width WOOD UTILIZATION y. p. Edgings y. p. Sawdust y. p. Slabs yard yellow pine zinc chloride
Popular passages
Page 8 - Board, and the Bureau of Foreign and Domestic Commerce of the Department of Commerce.
Page 1 - ... preservative must displace or compress the air in the wood. After the retort is filled, additional preservative is forced into the cylinder by means of pressure pumps, the pressure being gradually raised to and maintained at 125 to 175 Ib.
Page 40 - US DEPARTMENT OF AGRICULTURE. Forest Service. 1920. Timber depletion and the answer. A summary of the report on timber depletion and related subjects prepared in response to Senate Resolution 311. US Dept.
Page 118 - Manual of Design and Installation of the Forest Service Water-Spray Dry Kiln. By LV Teesdale. Department of Agriculture Bulletin 894, October 18. 1920. Price, 10 cents. A good manual for this type of kiln. The Theory of Drying and its Application to the New Humidity Regulated and Recii-culating Dry Kiln.
Page 10 - DC, works in close cooperation with a number of official and private organizations, notably the Bureau of Standards of the Department of Commerce and the Forest Products Laboratory of the Forest Service, Department of Agriculture.
Page 51 - Commerce, comprises about 200 members representing manufacturers, distributors, and consumers of forest products. Its object Is to work for closer utilization of our country's timber resources. The committee, whose headquarters are in the Department of Commerce. Washington, DC, works in close cooperation with a number of...