FF-1112 Forces In Simple Bar Structure Apparatus


  • Measurement of bar forces (ties and Rafter).
  • Calculation of bar forces by the method of joints.
  • Comparison: measurement result-calculation-graphical method.


This apparatus is used to measure the deformation in elements of simple bar structure. Whenever a load is applied to a simple bar structure, its members undergo a strain.

This unit consists of a base structure which provides the support locations for the truss. Three metallic elements form a truss in a triangular shape. Load is applied from the top of the truss structure via a hanger. Each member has a force gauge connected to it which shows the forces produced due to applied load in each member.

This apparatus represents a simple roof truss bar structure.