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# Test 1 - 3cfw)0kips Problem I(35 points A 6-ft lengthof a...

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3{)0 kips Problem I (35 points). A 6-ft length of a steel pipe of 12. inch outer diameter and0.5-inch wall thickness is used asa short column to carry a 300-kip centric axial load. Knowing that E = 29 x 106 psi and that v = 0.30, determine a) the normal stress in the pipe b) the change in length of the pipe c) the change in its outer diameter d) the change in its wall thickness 4, - TG'- //) = /g.oo,,^tz g ft \^7t .\a, b) J, W-- (goo*Ye : A . 7t"*?xrc) CTto:1 YQ= -o3o -:-) .A --// br,*&-. : €,* n 12" = Gr ) + O,Oqt7t,8 b/R / ('/fr t6a = q e*,*"ou" s- €,t /6. 6 | kgi e7bPQ.rste) - o.o/ /2 (ze " /o3 r")

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a) b) c) Problem 2 (35 points). Two forces are applied to bracket BCD as shown. The steel used for both the control rcd AB and the pin at C has an ultimate normalsffess of 600 MPa and an ultimate shearing stress of 350 MPa. Determine the diameter of rod AB for which the factor of safety against failure will be 3.3. Determine the diameter of the pin at C for which the factor of safety with respect to shear failure will also be 3.3. Determine the bearing shess in the brackets at C, assuming that a 2S-mm-diameter pin is used at C and that the thickness of each bracket ("/") is 15mm. = 18l,? A?q ffill" l*-0., '"J*-0., *J (r,\qrops 4) 4tt ' ry\'" =rv),?t^?q (rpr,) 5,3 fqu= +
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• Spring '09
• Dr.Peterman
• ASCII, carrya 300-kipcentricaxial load, C hasan ultimatenormalsffessof, s. tL v/u, ith l/4-inch gapsbetweenhem.

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