Report ..., المجلدات 9-17U.S. Government Printing Office, 1929 |
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الصفحة
... cent of the lumber is bought in short lengths , the balance ( 181⁄2 per cent ) being cut into short lengths from long lengths on the job . Tables show where these short lengths may be used in building and construction . Price , 10 cents ...
... cent of the lumber is bought in short lengths , the balance ( 181⁄2 per cent ) being cut into short lengths from long lengths on the job . Tables show where these short lengths may be used in building and construction . Price , 10 cents ...
الصفحة 3
... cent but quite often 18 or 20 per cent ; and a good deal of 2 - inch common now leaves the kilns with a moisture content of up to 23 or 25 per cent . This stock prob- ably has all the qualities of more thorough seasoned stock except ...
... cent but quite often 18 or 20 per cent ; and a good deal of 2 - inch common now leaves the kilns with a moisture content of up to 23 or 25 per cent . This stock prob- ably has all the qualities of more thorough seasoned stock except ...
الصفحة 5
... cent or more , and as " kiln - dried " under an even wider range of moisture content or from 6 to 25 per cent or more . In the upper grades of product both terms are a little more strictly defined , but a great deal of B and better ...
... cent or more , and as " kiln - dried " under an even wider range of moisture content or from 6 to 25 per cent or more . In the upper grades of product both terms are a little more strictly defined , but a great deal of B and better ...
الصفحة 7
... cent in the upper grades and from about 30 to 10 per cent or less in the common grades . A careful analysis of degrade losses occurring in the air seasoning and kiln- drying of many kinds of wood indicates that avoidable wastes are ...
... cent in the upper grades and from about 30 to 10 per cent or less in the common grades . A careful analysis of degrade losses occurring in the air seasoning and kiln- drying of many kinds of wood indicates that avoidable wastes are ...
الصفحة 8
... cent , and if the average mill value of our lumber product may be taken as $ 30 a thousand , this loss in footage alone would amount to 75 cents a thousand feet on the entire lumber production , leaving a material additional loss to be ...
... cent , and if the average mill value of our lumber product may be taken as $ 30 a thousand , this loss in footage alone would amount to 75 cents a thousand feet on the entire lumber production , leaving a material additional loss to be ...
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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...