STR19 - Experiment

An experimental apparatus to allow students to investigate a simple suspension bridge structure, and measure the cable tension under various loads.

PDF datasheet

The experiment hardware fits onto the Structures Test Frame (STR1, available separately). Students use masses on weight hangers to apply various loads to a rigid deck, joined to a parabolic cable via hangers. 

The suspension cable passes over pulleys at each end. One end is rigidly fixed. The other end connects to a mechanism bearing on a load cell. When connected to a Digital Force Display (STR1a, available separately), the load cell measures the cable tension. The equipment includes a signal cable to connect the load cell to a Digital Force Display (STR1a). 

The lecturer guide provides details of the equipment including sample experiment results. The student guide describes how to use the equipment and gives experiment procedures. 

For extra ‘virtual’ experiments, TecQuipment can supply the optional TecQuipment Structures Software (STRS), for use on a suitable computer. The virtual experiments simulate the tests you can perform with the hardware. They also extend the choice of tests beyond that available using only the hardware, for example: higher loads, uniform loads or different test specimens. This extends the student’s learning experience. 

For automatic data acquisition of your experiment results, TecQuipment can supply the optional Automatic Data Acquisition Unit (STR2000). Supplied as standard with the STR2000 is TecQuipment’s Structures Software that displays and logs your experiment results and gives the extra virtual experiments.

  • Demonstration of the characteristics of a simple suspension bridge
  • Examination of the relationship between applied loads and the suspension cable tension
  • Observation of the stability of the structure
  • Comparison of behaviour to simplified cable theory
STR1 - Base Unit

A sturdy lightweight aluminium bench-mounting frame to provide rigid support for the interchangeable experimental modules in TecQuipment's Structures Range (STR2 -STR20).

STR1A - Ancillary

A hardware module to simultaneously measure and display the output of up to 4 force sensors mounted on experiments in TecQuipment's Structures Range (STR2 -STR20).

STR2000 - Ancillary

A computer interface module with ADA software that allows the hardware experiments in TecQuipment's Structures Range to be interfaced to a PC.

STF2 - Experiment

A demonstration to show the shape and tensions of suspension cables.