8B. ANALYSIS PART 2

CHAPTER 8B 'ANALYSIS' 102 Secondary pre-seismic control in public and utility buildings with reinforced concrete load- bearing structure 2.4.1 push According to international practice, the inventory and hierarchical valuation of buildings is carried out in three successive phases, which have come to be called: α. Rapid visual or primary pre-seismic testing β. Secondary pre-seismic control c. Tertiary pre-seismic control Rapid Visual Inspection is a simplified methodology applied to large sets of buildings and is therefore by nature of limited reliability. The scope of the secondary pre-seismic inspection is the buildings that, from the macro primary inspection, received a rating below a predicted threshold. The aim of the secondary pre-seismic inspection is to re-calibrate hierarchical calibration of these buildings based on the mapping and evaluation of technical characteristics. This check is more detailed and requires access to all areas of the building, the drawing up of geometric and pathology mapping drawings, visual assessment and some on-site checks of the building materials, as well as elementary calculations for the quantitative assessment of characteristic indicators, without simulation of the load-bearing structure. The secondary pre-seismic inspection is more detailed than the primary inspection (rapid visual inspection), but faster than the tertiary inspection, which requires a full seismic capacity assessment study of the building according to the principles and methods of seismic engineering and the latest developments in regulatory manuals (KAN.EPE., as applicable). The proposed methodology is an approximate procedure for the assessment of the seismic capacity and seismic adequacy of existing buildings from O.S. in relation to the seismic requirement , as defined in current regulations. The methodology includes some calculations, which are generally approximate, without the requirement to construct a detailed model of the building as in the full studies required by a tertiary audit. The end result of this check is an "index" called the building's " Control Priority Index λ ". This index does not have an entirely objective meaning but indicates the order of priority for the third phase of the whole project, i.e. the preparation of assessment and redesign (strengthening) studies for a limited number of buildings according to the financial possibilities of the competent body.