Uses of Trusses

Uses of Trusses

A girder bridge made of trusses. Image credit luetke-modellbahn.de

A girder bridge made of trusses. Image credit luetke-modellbahn.de

ZIMSEC O Level Combined Science Notes: Uses of Trusses

  • Trusses are used extensively in large civil structures
  • One their uses is to make girder bridges
  • These bridges are designed in such a way that they do not have a neutral layer
  • The bridge ┬áis supported at two ends
  • The bottom part of the bridge is in compression and the topmost part in in tension
  • The diagonal tension and compression members of the truss system support the load
  • The zig-zag trellis structure of the bridge protects it from shear forces
  • Most girder bridges are made up of hollowed box steel beams to reduce their weight and cost while maintaining their strength
Electric Power transmission lines. Image credit MediaWiki

Electric Power transmission lines. Image credit MediaWiki

  • Trusses are also used to make power pylons
  • The structure is supported by tension and compression members of the truss
  • A pylon made up of trusses is cheaper and less wasteful when compared to a solid beam
Cranes are also made up of trusses. Image credit animalpicturesociety.com

Cranes are also made up of trusses. Image credit animalpicturesociety.com

  • Some cranes are also made up of trusses
  • Cranes have a cantilever beam made up of trusses
Scaffolding. Image credit siyasomarket.com

Scaffolding. Image credit siyasomarket.com

  • Trusses are also used in building houses especially in creating roofs
  • And in building scaffolding for builders and constructors to stand on during the construction of a building

  • The force from the struts is supported by the walls of the house in a roof truss
  • The tie beams prevent the load of the roof from pushing the wall outwards
  • This gives stability to the structure
  • In a roof truss the struts are in compression and
  • tie beams are in tension

To access more topics go to the Combined Science Notes page.

By |2017-01-17T11:12:24+00:00June 13th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|Comments Off on Uses of Trusses

About the Author:

He holds an Honours in Accountancy degree from the University of Zimbabwe. He is passionate about technology and its practical application in today's world.
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