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5.8-9 A laminated wood beam on simple sup- ports (figure part a) is built up by gluing together four 2 in. × 4 in. boards (actual dimensions) to form a solid beam 4 in. X 8 in. in cross section, as shown in the fig- ure part b. The allowable shear stress in the glued joints is 62 psi, the allowable shear stress in the wood is 175 psi, and the allowable bending stress in the wood is 1650 psi.

5.8-9 A laminated wood beam on simple sup- ports (figure part a) is built up by gluing together four 2 in. × 4 in. boards (actual dimensions) to form a solid beam 4 in. X 8 in. in cross section, as shown in the fig- ure part b. The allowable shear stress in the glued joints is 62 psi, the allowable shear stress in the wood is 175 psi, and the allowable bending stress in the wood is 1650 psi.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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5.8-9 A laminated wood beam on simple sup- ports (figure part a) is built up by gluing together four 2 in. X 4 in. boards (actual dimensions) to form a solid beam 4 in. X 8 in. in cross section, as shown in the fig- ure part b. The allowable shear stress in the glued joints is 62 psi, the allowable shear stress in the wood is 175 psi, and the allowable bending stress in the wood is 1650 psi. (a) If the beam is 12 ft long, what is the allowable load P acting at the one-third point along the beam, as shown? (Include the effects of the beam's own weight, assuming that the wood weighs 35 lb/ft³.) shutter 2 in. L/3 2 in. 3 in. 2 in. 2 in. 3 in. 2 in. (a) 4 in. 4 in. (b) (c) PROBLEM 5.8-9
Transcribed Image Text:5.8-9 A laminated wood beam on simple sup- ports (figure part a) is built up by gluing together four 2 in. X 4 in. boards (actual dimensions) to form a solid beam 4 in. X 8 in. in cross section, as shown in the fig- ure part b. The allowable shear stress in the glued joints is 62 psi, the allowable shear stress in the wood is 175 psi, and the allowable bending stress in the wood is 1650 psi. (a) If the beam is 12 ft long, what is the allowable load P acting at the one-third point along the beam, as shown? (Include the effects of the beam's own weight, assuming that the wood weighs 35 lb/ft³.) shutter 2 in. L/3 2 in. 3 in. 2 in. 2 in. 3 in. 2 in. (a) 4 in. 4 in. (b) (c) PROBLEM 5.8-9
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