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Trusses

Trusses. Engr. Saeed Ahmed Maitlo. Trusses. What is a truss a truss is an assembly of linear members connected together to form a triangle or triangles that convert all external forces into axial compression or tension in its members Single or number of triangles

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Trusses

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  1. Trusses Engr. Saeed Ahmed Maitlo

  2. Trusses • What is a truss a truss is an assembly of linear members connected together to form a triangle or triangles that convert all external forces into axial compression or tension in its members • Single or number of triangles a triangle is the simplest stable shape • Joints assumed frictionless hinges loads placed at joints

  3. Simple Truss Rafter pair - Joist simple roof construction loading along rafters - bending Primitive dwelling heavy timber trusses Simple Trusses

  4. Truss Terminology Vertical Diagonal Top Chord Web Members (verticals & diagonals) Depth or Rise Joint, Panel point or Node Panel Bottom Chord Span Flat Truss or Parallel Chord Truss

  5. Truss Types Flat Pratt Bowstring Triangular Howe Flat Howe Inverted Bowstring Simple Fink Warren Lenticular Fink Camelback Triangular Pratt Cambered Fink Scissors Shed

  6. Why Trusses? • A truss provides depth with less material than a beam • It can use small pieces • Light open appearance (if seen) • Many shapes possible

  7. Multipanel Trusses Sainsbury Centre Norwich, England Foster & Partners Anthony Hunt Associates Warren Trusses Centre Georges Pompidou Paris Piano & Rogers Ove Arup & Partners Shaping Structures: Statics, W. Zalewski and E. Allen (1998)

  8. 3-Hinged Truss Arches Waterloo Terminal for Chunnel Trains Nicholas Grimshaw & Partners Anthony Hunt Associates Shaping Structures: Statics, W. Zalewski and E. Allen (1998)

  9. Stadium Australia Homebush, Sydney, 1999 Bligh Lobb Sports Architects Sinclair Knight Merz (SKM) Modus Consulting Engineers

  10. Truss Application in Biomedical • In medicine, a truss is a kind of surgical appliance, particularly one used for hernia patients. A truss provides support for the herniated area, using a pad and belt arrangement to hold it in the correct position

  11. Truss Definition According to Medical • truss  (trs)n. • 1. Medicine A supportive device, usually a pad with a belt, worn to prevent enlargement of a hernia or the return of a reduced hernia. • 2.A rigid framework, as of wooden beams or metal bars, designed to support a structure, such as a roof.

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