Determine the allowable force f in the cable

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Reference no: EM131065051

The roof over a concourse at an airport is supported by the use of pretensioned cables. At a typical joint in the roof structure, a strut AB is compressed by the action of tensile forces F in a cable that makes an angle α = 75° with the strut (see figure and photo). The strut is a circular tube of steel (E = 30,000 ksi) with outer diameter d2= 2.5 in. and inner diameter d1= 2.0 in. The strut is 5.75 ft long and is assumed to be pin-connected at both ends.

Using a factor of safety n = 2.5 with respect to the critical load, determine the allowable force F in the cable.

Reference no: EM131065051

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