EXAMPLE 6. BUILDING VALUATION & REDESIGN STUDY

EXAMPLE 6: "STUDY FOR THE VALUATION AND REDESIGN OF A BUILDING ACCORDING TO THE CANC. 4 relationships (analytical or empirical) or tables. This is the reason why in recent years inelastic static analysis has been widely applied in the evaluation or redesign of existing buildings. The Interventions Regulation KAN.EPE) aims to establish criteria for the assessment of the load-bearing capacity of existing structures and application rules for their seismic redesign, as well as for possible interventions, repairs or reinforcements. Structures are mainly buildings with a load-bearing structure made of reinforced concrete (with or without damage). It contains provisions of mandatory application, which specify: α. The criteria for assessing the load-bearing capacity of an existing structure. β. The minimum mandatory load-bearing capacity requirements for redesigned structures or their members. c. Determining the ways in which intervention can be carried out. δ. The correlation of this Regulation with other Regulations (materials, loadings, etc.). VALUATION OF EXISTING STRUCTURES (§2.1 OF THE CODE OF PRACTICE) The term ' assessment ' of an existing structure means the assessment of its available load-bearing capacity and the verification of compliance with the minimum mandatory requirements imposed by the regulations. The assessment process leads to a decision on whether or not to intervene, and involves the following three stages: - Data collection (research of the history of the structure) - Analysis (of the structure as it is) - Limit state control. The valuation process varies depending on the existence or not of damage to the building to be valued. REDESIGN (§2.4 OF THE ANNUITY SCHEME) If a decision to intervene is taken, the " redesign " phase follows, consisting of the formulation and testing of one or more alternative intervention schemes that restore or enhance the load-bearing capacity of the structure. As in valuation, there are three stages in the redesign process: - Conception and preliminary design of the intervention scheme - Analysis of the structure as it is intended to be developed - Limit state control. VALUATION AND REDESIGN OBJECTIVES (§2.2 OF THE REGULATION) The whole philosophy of assessment and redesign is based on the so-called Performance Based Design, which is composed of a set of rules and criteria aimed at designing structures with predefined behaviour for a given level of seismic excitation. BASIC PRINCIPLES OF VALUATION AND REDESIGN IN ACCORDANCE WITH EIA (3 h revision of the EIA 2022)