Report ..., Volumes 9-17U.S. Government Printing Office, 1929 |
From inside the book
Results 1-5 of 65
Page 3
... degrade . This occurs to a con- siderable degree in air - dried stocks that are carried in pile too long , and to even a more marked degree in kiln - drying . Formerly the sorting or separation for kiln - drying was a separation between ...
... degrade . This occurs to a con- siderable degree in air - dried stocks that are carried in pile too long , and to even a more marked degree in kiln - drying . Formerly the sorting or separation for kiln - drying was a separation between ...
Page 5
... degrade defects such as loosening of knots and checking , which more thorough sea- soning would produce . The study by the Forest Products Labora- tory of moisture content in material for shipment showed that in dimension , and taking ...
... degrade defects such as loosening of knots and checking , which more thorough sea- soning would produce . The study by the Forest Products Labora- tory of moisture content in material for shipment showed that in dimension , and taking ...
Page 7
... degrade in seasoning lumber , because a perfected seasoning operation is too long and too costly . Degrade can be reduced , however , even under fast - drying schedules . In southern pine , for instance , research has devised 72 - hour ...
... degrade in seasoning lumber , because a perfected seasoning operation is too long and too costly . Degrade can be reduced , however , even under fast - drying schedules . In southern pine , for instance , research has devised 72 - hour ...
Page 8
... degrade losses as have been made . Certain tests on some species have shown degrade losses of less than $ 1 on some common grades , spread upon the entire production of that grade concerned in the tests ; but in other items degrade ...
... degrade losses as have been made . Certain tests on some species have shown degrade losses of less than $ 1 on some common grades , spread upon the entire production of that grade concerned in the tests ; but in other items degrade ...
Page 9
... degrade loss , and at an actual lower cost , all factors considered . In some thick hardwoods kiln - drying is so slow as to cost more than air- drying . Kiln - drying is gradually replacing air - drying each year as dry - kiln ...
... degrade loss , and at an actual lower cost , all factors considered . In some thick hardwoods kiln - drying is so slow as to cost more than air- drying . Kiln - drying is gradually replacing air - drying each year as dry - kiln ...
Contents
1 | |
7 | |
11 | |
14 | |
15 | |
16 | |
17 | |
19 | |
79 | |
80 | |
81 | |
83 | |
86 | |
89 | |
90 | |
91 | |
20 | |
21 | |
22 | |
23 | |
26 | |
27 | |
28 | |
29 | |
30 | |
31 | |
32 | |
36 | |
37 | |
39 | |
42 | |
43 | |
45 | |
46 | |
48 | |
49 | |
50 | |
51 | |
52 | |
54 | |
59 | |
60 | |
61 | |
62 | |
63 | |
64 | |
65 | |
66 | |
69 | |
70 | |
76 | |
78 | |
92 | |
93 | |
94 | |
95 | |
96 | |
100 | |
104 | |
106 | |
107 | |
108 | |
110 | |
112 | |
118 | |
121 | |
124 | |
25 | |
67 | |
3 | |
28 | |
34 | |
37 | |
41 | |
49 | |
57 | |
3 | |
10 | |
16 | |
4 | |
10 | |
15 | |
30 | |
37 | |
49 | |
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...