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of /home/abouaayt/public_html/aboutcivil/answers/qa-plugin/user-management/layer.php Why trapezoidal section is used in crane's hook? - Civil Engineering Technical Questions Answers - Ask a Civil Engineer
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Why trapezoidal section is used in crane's hook?

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Trapezoidal section has thiner edge frm inside and thicker edge frm outside...line of action is frm thiner edge..inner edge of hook acts as curved beam..make it smoother to operate.
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