EXAMPLE 6. BUILDING VALUATION & REDESIGN STUDY

EXAMPLE 6: "STUDY FOR THE VALUATION AND REDESIGN OF A BUILDING ACCORDING TO THE CANC. 12 ANNEX 3.1 "EREMIN" REPRESENTATIVE PRICES OF MATERIAL RESISTANCE Security check The safety check, carried out on an appropriate member or part or the whole structure, shall demonstrate that the imposed critical magnitude (stress and/or strain) is reliably less than the corresponding available capacity. The safety factor applied in the assessment and redesign of existing structures is in the same general form as provided for in the Eurocodes: Sd< Rd , with Sd= γSd ⋅ S (Sk ⋅ γf) and Rd= (1/γRd) ⋅ R (Rk/γm) , where: • Sd: The design (and recheck) values of the stress or strain magnitudes caused by the actions. • Rd: The design (and retest) values of the available corresponding resistances (transient or deformation magnitudes). • Sk: The representative values of the baseline and random actions for which there is a certain probability of exceedance in 50 years. • Rk: The representative values of the properties of the materials forming the resistances and having a certain probability of undercutting. • γf, γm: the individual safety factors for the actions and properties of the materials, which take into account possible adverse deviations of the respective variables from the representative values. • γSd, γRd: The individual safety factors that take into account the increased (compared to the design of new buildings) uncertainties of the simulations, through which the effects of the actions and the resistances of all kinds are estimated, respectively (see also Chapter 2, paragraphs 2.4.3 and 2.4.4.)