ch01-03 stress & strain & properties
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01 Solutions 46060 5/6/10 2:43 PM Page 60<br />
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•1–89. The eye bolt is used to support the load of 5 kip.<br />
1 in.<br />
1<br />
Determine its diameter d to the nearest and the required<br />
1<br />
thickness h to the nearest<br />
8 in. 8 in.<br />
of the support so that the<br />
washer will not penetrate or shear through it. The allowable<br />
normal <strong>stress</strong> for the bolt is s allow = 21 ksi and the allowable<br />
shear <strong>stress</strong> for the supporting material is t allow = 5 ksi.<br />
d<br />
h<br />
5 kip<br />
Allowable Normal Stress: Design of bolt size<br />
s allow = P ; 21.0(10 3 ) = 5(1<strong>03</strong> )<br />
p<br />
A b 4 d2<br />
d = 0.5506 in.<br />
Use d = 5 8 in.<br />
Ans.<br />
Allowable Shear Stress: Design of support thickness<br />
t allow = V A ; 5(1<strong>03</strong> ) = 5(1<strong>03</strong> )<br />
p(1)(h)<br />
Use h = 3 8 in.<br />
Ans.<br />
60
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