EXAMPLE 6. BUILDING VALUATION & REDESIGN STUDY

EXAMPLE 6: "STUDY FOR THE VALUATION AND REDESIGN OF A BUILDING ACCORDING TO THE CANC. 26 1.5. Sizing Make a first dimensioning of the carrier using a Eurocode 2 scenario in order to calculate its reinforcement. As mentioned before, a prerequisite for the execution of an inelastic analysis scenario is the existence of reinforcement in the cross-sections, which results from dimensioning ONLY with Eurocode 2 scenario (not with the old regulation) with adaptation of the strengths of the Steel and Concrete materials to the strengths of the existing structure. It is reminded that the materials to be used must NOT be of B and STI quality (old material grades) but the adjustments of strengths and individual safety factors must be made based on the new materials. Within the Parameters of Sizing: - select the combinations and - adapt the strengths of the predefined materials to the qualities of your existing construction. If the structure under inspection has B and STI quality materials, then in the definition of materials, in the sizing parameters, and before the initial sizing, you must define and modify the parameters of the materials per structural element by adapting them to the characteristics of the new materials and modifying the strengths accordingly, based on the of the CEE. It is recalled that for the elastic analyses (checks in terms of forces - intensities) the representative (characteristic) strength value of the materials is the mean value minus one standard deviation, while for the inelastic analyses (checks in terms of deformations) and for the m method the representative (characteristic) strength value of the materials is the mean value. Method m is considered to belong, as far as the determination of strength is concerned, to the inelastic methods. As mentioned above, the CEQS also provides for individual safety factors γm (γc and γs for concrete and steel respectively) which for existing materials are differentiated if the check is performed in terms of forces and if it is performed in terms of deformations and depend on the data reliability level (§ 4.5.3.)