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Solution to Last Week's Puzzler
Architecture Puzzler #157
Question
When dried from green to oven-dry, a 1-inch by 8-inch by 10-foot (25- by 200- by 3000-millimeter) board will shrink by different proportions in thickness, width, and length. Match the percentage of shrinkage to the dimension it applies to.
(t) thickness
(w) width
(l) length
a. 5 to 10 percent
b. 0.1 to 0.2 percent
c. 2 to 5 percent
Answer
The board will shrink as follows:
(t) (c) 2 to 5 percent in thickness — 3/64 inch (1.2 millimeters) in 1-inch (25-millimeter) thickness)
(w) (a) 5 to 10 percent in width — 3/4 inch (19 millimeters) in 8-inch (200-millimeter) width)
(l) (b) 0.1 to 0.2 percent in length — 1/8 inch (3.2 millimeters) in 10-foot (3000-millimeter) length)
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