Large span Trusses Supported on RC Columns | Tekla 2017 Model

Category:3D Portal Frame on RC Columns
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Large span Trusses Supported on RC Columns | Tekla 2017 Model

For efficient structural performance, the ratio of span to truss depth should be chosen in the range 10 to 15. The architectural design of the building determines its external geometry and governs the slope(s) given to the top chord of the truss. The intended use of the internal space can lead either to the choice of a horizontal bottom chord, e.g. where conveyors must be hung under the chord, or to an inclined bottom chord, to allow maximum space to be provided.

For an efficient layout of the truss members between the chords, the following is advisable:

  • The inclination of the diagonal members in relation to the chords should be between 35° and 55°
  • Point loads should only be applied at nodes
  • The orientation of the diagonal members should be such that the longest members are subject to tension (the shorter ones being subject to compression).

Many solutions are available. Choice of members depends on the magnitude of the internal forces, ease of connections between members, aesthetics and any necessity to connect prefabricated truss sections on site. When selecting members, the out-of-plane buckling resistance will be important, together with resistance under reversed loading, for example, uplift.

This structure have the following features:

Building floor plan dimensions: 26.55m x 132.00m long.

Column eave heights: 6.00m

This model was done in Tekla structures 2017,you can download and use it in your projects in Tekla 2017 or newer versions.