Report ..., Volumes 9-17U.S. Government Printing Office, 1929 |
From inside the book
Results 1-5 of 100
Page
... Surface checking and casehardening . Loosening of knots . Warping and cupping ... Period required for adequate air - drying of lumber . Seasoning of miscellaneous sawmill products . Seasoning of timbers___ . Seasoning of sawed railroad ...
... Surface checking and casehardening . Loosening of knots . Warping and cupping ... Period required for adequate air - drying of lumber . Seasoning of miscellaneous sawmill products . Seasoning of timbers___ . Seasoning of sawed railroad ...
Page
... surface check__ . 66 44. Conventionalized longitudinal section of progressive kiln . 69 45. Kiln load piled with narrow vertical vents___ 46. Kiln load piled with liberal vertical air vents__ . 47. Kiln load mechanically piled of ...
... surface check__ . 66 44. Conventionalized longitudinal section of progressive kiln . 69 45. Kiln load piled with narrow vertical vents___ 46. Kiln load piled with liberal vertical air vents__ . 47. Kiln load mechanically piled of ...
Page 5
... surface drying may have gone a little further and produced some shrinkage . Many softwoods uniformly seasoned to 20 per cent have arrived at a fairly fit condi- tion for common uses ( not for finish and other high - grade uses ) ...
... surface drying may have gone a little further and produced some shrinkage . Many softwoods uniformly seasoned to 20 per cent have arrived at a fairly fit condi- tion for common uses ( not for finish and other high - grade uses ) ...
Page 10
... surface than that it will usually have in it enough of fungous decay to be a bad source of infection for lumber piled near it . Cinders make a good fill under lumber piles , because they dis- courage the growth of weeds . Sand is even ...
... surface than that it will usually have in it enough of fungous decay to be a bad source of infection for lumber piled near it . Cinders make a good fill under lumber piles , because they dis- courage the growth of weeds . Sand is even ...
Page 15
... surface , and thus is largely FIGURE 2. - Concrete pier foundations under construction in a southern mill yard . The stringers shown support heavy crossers not yet placed , which may be shifted for desired lumber length and spacing ...
... surface , and thus is largely FIGURE 2. - Concrete pier foundations under construction in a southern mill yard . The stringers shown support heavy crossers not yet placed , which may be shifted for desired lumber length and spacing ...
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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...