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Types of Steel Roof Trusses

Steel Roof Trusses

  • When the spread exceeds 10 m, timber trusses become heavy also uneconomical.
  • Steel trusses are also economical during larger spans.
  • Notwithstanding, steel trusses are more commonly used these days, to all spans – small or large.
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They are Steel Roof Trusses

  1. More economical,
  2. Easy to construct or fabricate,
  3. Fire-proof,
  4. More rigid, and
  5. Permanent.
  • Steel trusses are fabricated of rolled steel structural members before-mentioned as channels, angles, and T-sections including plates.
  • Most of the roof trusses are fabricated from angle sections because they can resist effectively both tension as well as compression, and their joining is easy.
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Steel Roof Trusses may be grouped into the following categories

  1. Open trusses
  2. North light trusses
  3. Bowstring trusses
  4. Arched rib trusses and solid arched ribs.
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Steel Roof Trusses have the following advantages over timber trusses

  • The sections comprising a steel truss are immediately available in the required dimensions, appearing in minimum wastage of material.
  • Steel trusses are light in weight and tin be fabricated in each shape depending on structural also architectural requirements.
  • Steel trusses are stronger and more rigid in association with timber trusses.
  • the members in Steel trusses are equally strong in tension as well as compression.
  • Steel trusses can be used over any span, while timber trusses are suitable only for up to 15 m spans.
  • The steel truss is fireproof.
  • The steel truss is termite-proof.
  • Steel truss has a longer life.