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.

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.

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.

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.

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