Solid Wood Products 2707 



Wellwood and Hyslop (1980) analyzed the economic feasibility of manufac- 

 turing such joists in Canada from aspen {Populus tremuloides Michx.), and 

 concluded that plant investment could be recovered in about 4 years — possibly 

 less. Schaffer and Moody (1977) examined the potential of manufacturing 

 stress-graded laminated lumber from eastern hardwoods in the United States and 

 indicated probability of both technical and economic success. See section 28-32 

 for an economic analysis of such an operation. 



Even higher prices per ton are obtainable if the high-strength properties of 

 parallel-laminated veneer are exploited in the manufacture of light-weight I- 

 beam joists having tension and compresson chords of parallel-laminated veneer. 

 (See sections 28-21 and 28-31 for economic analyses of manufacture of such I- 

 beams with laminated-hardwood- veneer chords.) 



Youngquist and Bryant (1979) identified the following additional products as 

 potentially suitable for manufacture from parallel-laminated veneer: window 

 and door headers, ridgepoles in manufactured housing, mobile-home truss 

 chords, truck and container decking, and scaffold planking. Tschemitz et al. 

 (1979) have studied the manufacture of crossties from thick hardwood veneer; 

 see preceding section Crossties from parallel-laminated veneer and figure 22-57 

 bottom. 



One of the most promising potential uses for parallel-laminated hardwood 

 veneer was early identified by Yao (1973) as furniture. A specific case is 

 structural frames for upholstered furniture which require the strength generally 

 found only in lumber. Text discussion related to figures 20-16 and 20-17 de- 

 scribes manufacture and properties of frame stock laminated from northern red 

 oak veneer, and an economic analysis of the manufacture of laminated frame 

 stock is provided in section 28-16. (See also Hoover et al. 1978, 1979, and 

 Eckelman et al. 1979.) 



A pioneering commercial enterprise in Stelle, 111., manufactures parallel- 

 laminated hardwood-veneer cants for remanufacture; the material is available in 

 lengths to 8 feet, widths to 34 inches, and thicknesses to 4 inches (Mace 1977). 



All factors considered, manufacture of parallel-laminated hard wood- veneer 

 products should become a significant segment of the eastern hardwood industry. 

 Availability of equipment particularly suited for the rapid economical produc- 

 tion of rotary-peeled veneer from small hardwood bolts (fig. 18-252) is an 

 important key to such manufacture. 



WOOD-DISK PATIOS 



An attractive and serviceable patio surface can be constructed of treated wood 

 disks cut at least 3 inches thick from hardwood logs 12 inches and larger in 

 diameter (fig. 22-66). Bois (1967) described procedures for excavating the patio 

 area about 7 inches below desired finish grade, outlining it with 4/4 form boards, 

 spreading and tamping dampened sand to a 4-inch depth within the patio area 

 outlined by the form boards, placing the treated disks on the sand and in close 

 contact with each other, and then filling spaces between disks with tamped 

 crushed or natural stone of Vi- to y4-inch size. 



