Report ..., المجلدات 9-17U.S. Government Printing Office, 1929 |
من داخل الكتاب
النتائج 1-5 من 100
الصفحة 8
... 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 losses have been so estimated running up to more than $ 11 per thousand ...
... 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 losses have been so estimated running up to more than $ 11 per thousand ...
الصفحة 15
... shown support heavy crossers not yet placed , which may be shifted for desired lumber length and spacing . Photograph courtesy of Forest Products Laboratory FIGURE 3. - An old foundation at the right , of a type now being replaced by ...
... shown support heavy crossers not yet placed , which may be shifted for desired lumber length and spacing . Photograph courtesy of Forest Products Laboratory FIGURE 3. - An old foundation at the right , of a type now being replaced by ...
الصفحة 17
... shown in Figure 6 , consisting of a heavy mudsill on which posts were erected to take the heavy cross timber on top . The foundation would be built up of two to five such bents spaced apart from front to back of the pile length , each ...
... shown in Figure 6 , consisting of a heavy mudsill on which posts were erected to take the heavy cross timber on top . The foundation would be built up of two to five such bents spaced apart from front to back of the pile length , each ...
الصفحة 18
... shown in Figure 4 the posts and mudsills were replaced by concrete piers . In the 22.7 per cent of foundations where the heavy timbers run lengthwise of the pile the foundation may be built up of individual bents as in Figure 4 , but ...
... shown in Figure 4 the posts and mudsills were replaced by concrete piers . In the 22.7 per cent of foundations where the heavy timbers run lengthwise of the pile the foundation may be built up of individual bents as in Figure 4 , but ...
الصفحة 19
... shown in Figure 6 is varied by substituting a pile of blocking for the vertical posts ( fig . 8 ) , and the through mudsill shown is replaced by mudsill blocks for each foundation support . The size of founda- tion timbers varies ...
... shown in Figure 6 is varied by substituting a pile of blocking for the vertical posts ( fig . 8 ) , and the through mudsill shown is replaced by mudsill blocks for each foundation support . The size of founda- tion timbers varies ...
المحتوى
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 | |
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
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
مقاطع مشهورة
الصفحة 8 - Board, and the Bureau of Foreign and Domestic Commerce of the Department of Commerce.
الصفحة 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.
الصفحة 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.
الصفحة 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.
الصفحة 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.
الصفحة 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...