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33_Mechanics Homework Mechanics of Materials Solution

# 33_Mechanics Homework Mechanics of Materials Solution -...

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Unformatted text preview: 'l [:1 *\ PROBLEM 1.45 PROBLEM 1.46 1.45 Three % - in.-diameter steel bolts are to he used to attach the steel plate shown to a wooden beam. Knowing that the plate will support a 24-kip load and that the ultimate shearing stress for the steei used is 52 ksi, determine the factor of safety for this design. SOLUTION F" M be“ A =35? M53); = mm on Pu Aft. = (O.4WS’)(5'2): 22.97 lit-'ps Per bolf P : 3i : 8 Rip: 3 Rs.=%-= ig-ﬂ— :2.37 4 1.46 Three steel bolts are to be used to attach the steel plate shown to a wooden beam. Knowing that the plate will support a 24-kip load, that the ultimate shearing stress for the steel used is 52 ksi, and that a factor of safety of 3.37 is desired, determine the required diameter of the bolts. SOLUTION For Basin loo}? P: -%i = 8 Mr: Required Pu -:(F.S.)P = (3.37)(8).- 26.9; mpg . 1 I“ A 2 Ed" -,-—---.-~ ‘ “'r."'_'§"_*:"”. re—wé—erw J71“? av ”~77 ,,, ”V 2... ”\$1.. ____.,_._\&;q___.. ...
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