Unformatted text preview: The allowable shear stress in the glued joints is 65 psi, and the allowable bending stress in the wood is 1800 psi. If the beam is 9 ft long, what is the allowable load P acting at the one-third point along the beam as shown? (Include the effects of the beams own weight, assuming that the wood weighs 35 lb/ft 3 .) 2 in . 2 in . 2 in . 4 in . P 2 in . 3 ft L 9 ft Solution 5.8-7 W EIGHT OF BEAM PER UNIT DISTANCE g 35 lb ft 3 q g A t allow 65 psi s allow 1800 psi h 8 in. A bh L 9 ft b 4 in. A LLOWABLE LOAD BASED UPON SHEAR STRESS IN THE GLUED JOINTS ; MAX . SHEAR STRESS AT NEUTRAL AXIS t VQ Ib t max 3 V 2 A q 7.778 1b ft 05Ch05.qxd 9/25/08 2:29 PM Page 446...
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- Fall '11
- Stress, 3 ft, 3L, 9 ft, 35 lb