In the case of reinforced concrete, structural elements preliminary design stage has a highimportance due to the contribution to the dead loads (the weight of the sectional elements) and tothe total mass of the construction.
Pre-dimensioning depends on various conditions such asstiffness (admissible deflection), ductility (proper sizing of structural elements so as to createareas with sufficient seismic energy dissipation capacity of deformation in post-elastic domain or in order to avoid “soft storey” mechanisms of energy dissipation), or architectural andtechnological requirements.
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