By Forest Products Laboratory
Forests, precise from all their different providers and merits, offer a simple uncooked fabric - wooden - which from the earliest occasions has provided mankind with prerequisites of lifestyles and with comforts and conveniences past quantity.
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Additional info for Wood handbook : wood as an engineering material
Properties of imported tropical woods. Res. Pap. FPL 125. S. Department of Agriculture, Forest Service, Forest Products Laboratory. L. 1979. Checklist of United States trees (native and naturalized). Agric. Handb. 541. S. Department of Agriculture. J. 1930. Comparative strength properties of woods grown in the United States. Tech. Bull. 158. S. Department of Agriculture. ; deZeeuw, C. 1980. Textbook of wood technology. 4th ed. New York: McGraw–Hill. W. 1949. Timbers of the new world. New Haven, CT: Yale University Press.
This genus is distributed from Costa Rica southward into northern Colombia and from the upland forest of the Amazon valley to eastern Brazil and the Guianas. The yellowish to light grayish brown heartwood is hardly distinguishable from the sapwood. The texture is medium to rather coarse, and the grain is generally interlocked. The wood dries at a slow rate; warping and checking may develop, but only to a minor extent. Piquia is reported to be easy to moderately difficult to saw; cutting edges dull rapidly.
The wood weighs between 544 3 3 and 752 kg/m (34 and 47 lb/ft ) at 12% moisture content 3 3 and about 945 kg/m (59 lb/ft ) when green. The sapwood is susceptible to attack by powderpost beetles, and the heartwood is not resistant to termites. The heartwood is rated as moderately resistant to fungal decay and should not be used under conditions that favor decay. The heartwood does not absorb preservative solutions readily. The wood machines easily, but because of the presence of silica, the wood severely dulls the cutting edges of ordinary tools and is very hard on saws.