Pin-jointed trusses

What this module covers

• State the assumptions behind truss analysis and when they are reasonable
• Check whether a truss is statically determinate
• Find member forces by the method of joints
• Use the method of sections to reach a member directly
• Spot zero-force members and tell tension from compression

Lessons

1. 4.1

   Assumptions and determinacy

   What we pretend about trusses, and whether equilibrium can solve them.

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2. 4.2

   Method of joints and method of sections

   Two ways to get member forces, and how to choose between them.

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3. 4.3

   Trusses as beams, tension coefficients and space frames

   Reading a truss as a deep beam, a faster hand method, and stepping into three dimensions.

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