5.1. Funicular Polygons

Try these first

1. 1.

   What does a cable primarily transmit?

   Hint

   Think about the nature of a cable's flexibility.

2. 2.

   What is the sag-to-span ratio?

   Hint

   Focus on how sag impacts the overall length.

3. 3.

   What shape does a cable take when subjected to concentrated loads?

   • Straight line
   • Funicular Polygon
   • Catenary

   Hint

   Think about the definition of configurations in loaded cables.

4. 4.

   True or False: The thrust component of cable tension varies under vertical loads.

   • True
   • False

   Hint

   Recall how horizontal components behave in cables.

5. 5.

   Analyze a cable with two concentrated loads placed at different intervals and sketch the resulting funicular polygon.

   Hint

   Consider how each load affects the cable's shape and forces.

6. 6.

   Given a cable structure with a known span and sag, derive the relationships between tension and thrust using the appropriate equations.

   Hint

   Review the equations we discussed on sag and thrust.