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Unformatted text preview: 1 in. 1 in. 8 in. 1 in. 1 in. (b) Web Flange 1 in. 1 in. 6 in. 8 in. 1 in. 1 in. Problem 5.11-6 Two wood box beams (beams and ) have the same outside dimensions ( ) and the same thickness ( ) throughout, as shown |in the figure on the next page. Both beams are formed by nailing, with each nail having an allowable shear load of 250 N. The beams are designed for a shear force . (a) What is the maximum longitudinal spacing for the nails in beam ? (b) What is the maximum longitudinal spacing for the nails in beam ? (c) Which beam is more efficient in resisting the shear force? B s B A S A V 3.2 kN t 20 mm 200 mm * 360 mm B A z y O z y O 200 mm 360 mm 360 mm t = 20 mm t = 20 mm A 200 mm B 05Ch05.qxd 9/25/08 2:29 PM Page 469...
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- Fall '11