Difference Between King Post Truss & Queen Post Truss

The King post truss & Queen Post truss are type of the sloping roof. Both roofs are used in residential, commercial or industrial buildings.

Also Read: Basic Elements of Roof

Following are the Points which Differentiate both the Trusses:

King Post Truss & Queen Post Truss

01.

King Post Roof Truss

  • A king post has a central vertical post as used in architectural or bridge designs, working in tension to support a beam below from a truss apex above.

Queen Post Roof Truss

  • Queen Post truss is define as a pitched roof support using two vertical tie posts connected between the tie beam and the rafters.

02.

King Post Roof Truss

The king post truss consists following components:

  • Tie Beam
  • Two Inclined principal rafter
  • Two struts
  • King post

Ridge Beam

Queen Post Roof Truss

The Queen post Truss consists of following components:

  • Two Queen posts
  • Two Principal Rafters
  • Struts
  • Tie Beam
  • Straining beams
  • Straining sills
  • Purlins

03.

King Post Roof Truss

  • King post truss is used when the length of span is in the range of 5 to 8 m.

Queen Post Roof Truss

  • Queen post truss is used when the length of span is in the range of 8 to 12 m.

04.

King Post Roof Truss

  • One vertical post is provided at the centre of the roof which is called king post.

Queen Post Roof Truss

  • Two vertical posts are provided in 2 sides at distance which is called queen post.

05.

King Post Roof Truss

  • Straining beam and straining sill are not necessary.

Queen Post Roof Truss

  • Straining beam and straining sill are used to keep the queen post in stable position.

06.

King Post Roof Truss

  • King-post is connected with principal rafter, strut and tie beam.

Queen Post Roof Truss

  • Queen-post is connected with principal rafter, strut, Straining beam, straining sill and tie beam

07.

King Post Roof Truss

  • The top ends of two main rafters are connected to ridge pitch.

Queen Post Roof Truss

  • Top ends of two main rafters are joined with the queen posts heads.
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