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Application Sheets:: Difference between revisions
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== Force Resolution: == | == Force Resolution: == | ||
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==== Analysis Model: ==== | ==== Analysis Model: ==== | ||
[[File:Crane-stay-sc-model.png| | {| class="wikitable" | ||
[[File:Crane-star-sch-pin.png| | |+ | ||
|[[File:Crane-stay-sc-model.png|center|frame|Jib Analysis Model]] | |||
|- | |||
|[[File:Crane-star-sch-pin.png|center|frame|Pinned Connection]] | |||
|- | |||
|[[File:Crane-stay-sch-fbd.png|center|frame|Jib Free Body Diagram]] | |||
|} | |||
* The self-weight of the jib is modelled as a uniformly distributed load along the length of the jib. | * The self-weight of the jib is modelled as a uniformly distributed load along the length of the jib. | ||
* As a simplifying assumption for this calculation, it is assumed that there is no moment continuity in the jib at the mast i.e. the end of the jib is pinned to the mast. | * As a simplifying assumption for this calculation, it is assumed that there is no moment continuity in the jib at the mast i.e. the end of the jib is pinned to the mast. | ||
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<math>\theta = \tan^{-1}(\frac{20}{30}) = 34^\circ </math> | <math>\theta = \tan^{-1}(\frac{20}{30}) = 34^\circ </math> | ||
<math>F_{t}=\frac{F_y}{\sin\theta}=\frac{296}{\sin45^\circ}= | <math>F_{t}=\frac{F_y}{\sin\theta}=\frac{296}{\sin45^\circ}=529kN</math> | ||
* | * | ||