{"id":2193,"date":"2019-06-02T13:28:00","date_gmt":"2019-06-02T13:28:00","guid":{"rendered":"https:\/\/wp-release.buildsoft.eu\/?p=2193"},"modified":"2024-06-28T08:37:01","modified_gmt":"2024-06-28T08:37:01","slug":"the-do-and-donts-of-structural-engineering","status":"publish","type":"post","link":"https:\/\/wp-release.buildsoft.eu\/en\/the-do-and-donts-of-structural-engineering\/","title":{"rendered":"The do and don’ts of structural engineering"},"content":{"rendered":"\n

Identify the design criteria<\/h2>\n\n\n\n

To what requirements and what standards must the structure satisfy? Each project proposes appropriate design criteria for<\/p>\n\n\n\n

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  1. Ultimate Limit State (ULS) : resistance, stability, fatigue …<\/li>\n\n\n\n
  2. Serviceability Limit State (SLS) : maximum deflection, minimum eigenfrequency, maximum crack width, maximum concrete stress,…<\/li>\n<\/ol>\n\n\n\n

    Schematize!<\/h2>\n\n\n\n

    Schematize the construction to a mechanical model. A mechanical model contains only the bearing structure. This is the set of beams, columns, walls and floors that transfer the loads to the foundation.<\/p>\n\n\n\n

    Beams and columns are only represented by their axes. Connection with the outside world or with other elements can be schematized by using boundary conditions.<\/p>\n\n\n\n

    The right boundary conditions internal and external<\/h2>\n\n\n\n

    External boundary conditions, also known as supports, define the force transfer between the construction and the fixed world, for example, a pinned support or a fixed support. Supports can also be used as a substitute for structural elements that are not included in the calculation model.<\/p>\n\n\n\n

    An internal boundary condition defines the force transfer between the modeled structure elements themselves, for example an internal hinge. Internal boundary conditions can be present between bar elements mutually, between plates elements mutually, and between bars and plates.<\/p>\n\n\n\n

    Boundary conditions determine to a very large part of the distribution of forces in the model. The boundary conditions must describe as accurately as possible so that the actual behaviour of the structure is calculated. Therefore a good definition is essential!<\/p>\n\n\n\n

    Let software work for you!<\/h2>\n\n\n\n

    Before calculating the structure (by hand), you should determine whether or not the construction is statically determinate. This way you can select the proper calculation method.<\/p>\n\n\n\n

    A structure is statically determinate if the internal forces can be calculated, based on the static equilibrium equations only. This means that there are as many equilibrium equations as there are unknown variables :<\/p>\n\n\n\n