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Building Design and Construction Handbook - Merritt - Ventech!

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10.94 SECTION TEN<br />

In addition to exhibiting higher strength characteristics than other wood products,<br />

design properties for SCL products have less variability. This is largely due<br />

to the control in manufacturing of natural strength-reducing characteristics of wood,<br />

such as slope of grain, knots, <strong>and</strong> density. Also, the r<strong>and</strong>om dispersal of these<br />

strength-reducing characteristics throughout the finished member tends to offset the<br />

individual effects of these defects on the overall strength of the end product, much<br />

like the use of varying grades of sawn lumber in the manufacture of glulam timber.<br />

This combination of higher strengths <strong>and</strong> reduced variability makes SCL an economical<br />

wood structural material.<br />

10.30.5 Environmental Considerations<br />

With the increasing emphasis on more efficient uses of the available wood-fiber<br />

resource, engineered glued wood products are becoming more attractive. Each of<br />

the glued products described in the preceding articles makes optimum use of the<br />

base wood products in creating high-end, high-quality engineered products. Innovations<br />

in the engineered wood products industry are ongoing <strong>and</strong> it is these innovative<br />

engineered wood products that will allow wood to continue to be a viable<br />

construction material for building applications in the future.

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