ES226 SPRING 2018 Lesson 39: Cables

1. The cable supports the three loads shown. Determine the sags yB and yD of points B and D and the tension in each segment of the cable. Then, knowing that each rope has a diameter of ½”, determine the maximum normal stress and shear stress that acts within any of the ropes.

ES226 SPRING 2018 Lesson 39: Cables

ES226 SPRING 2018 Lesson 39: Cables

ES226 SPRING 2018 Lesson 39: Cables

2. Determine the maximum span that the cable can support if it is capable of sustaining if the cable will sustain a tensile (normal) stress of 40 ksi without breaking and it has a diameter of ½”. Given: the uniformly distributed load on the beam is w=500 lbs per foot. Do not include a factor of safety.

Max Span?

ES226 SPRING 2018 Lesson 39: Cables

3. Using the previous problem, what is the maximum span that the cable can support if a factor of safety of 2 is needed with respect to the cable breaking?