Among Estimating Service Life methods, Factor method is considered one of the main international references within ISO for the evaluation of building components’ Service Life in the specific conditions of use; it gives an easy contextualization of Reference Service Life values of building components outside the system and the specific design context: the biggest advantage in choosing this method is, in fact, its great simplicity, which becomes itself its highest limit because it doesn’t avoid possible errors in assigning factors’ values according to user’s own experience and point of view. In order to avoid, or at least limit as more as possible, such subjectivity, Durability of Building Components Group of Politecnico di Milano suggests for this method some criteria to make more objective and scientifically validated values attributed to each single factor: the report deals with the development of an Enhanced Factor method ruled with grids which drive users in correctly assigning values to each factor, keeping the simplicity of the method, but making it more objective. The paper reports about the definition of such Factor Grids, focusing on the methodological approach followed to individualize the main degradation actions, characterizing each factor, which has to be expressed through the use of specific sub factors. Once found these sub factors, it’s then necessary to determine in which way and, above all, how much they can influence Service Life. Eventually, an example of factors’ grid for ETICS is showed, built using the proposed procedural iter. This enhanced Factor method represents an important tool, scientifically validated but contemporarly easy to use: as a consequence, it can contribute to a more diffused application of Service Life planning.

Factor Methods applications using factors grids

DANIOTTI, BRUNO;LUPICA SPAGNOLO, SONIA;PAOLINI, RICCARDO
2008-01-01

Abstract

Among Estimating Service Life methods, Factor method is considered one of the main international references within ISO for the evaluation of building components’ Service Life in the specific conditions of use; it gives an easy contextualization of Reference Service Life values of building components outside the system and the specific design context: the biggest advantage in choosing this method is, in fact, its great simplicity, which becomes itself its highest limit because it doesn’t avoid possible errors in assigning factors’ values according to user’s own experience and point of view. In order to avoid, or at least limit as more as possible, such subjectivity, Durability of Building Components Group of Politecnico di Milano suggests for this method some criteria to make more objective and scientifically validated values attributed to each single factor: the report deals with the development of an Enhanced Factor method ruled with grids which drive users in correctly assigning values to each factor, keeping the simplicity of the method, but making it more objective. The paper reports about the definition of such Factor Grids, focusing on the methodological approach followed to individualize the main degradation actions, characterizing each factor, which has to be expressed through the use of specific sub factors. Once found these sub factors, it’s then necessary to determine in which way and, above all, how much they can influence Service Life. Eventually, an example of factors’ grid for ETICS is showed, built using the proposed procedural iter. This enhanced Factor method represents an important tool, scientifically validated but contemporarly easy to use: as a consequence, it can contribute to a more diffused application of Service Life planning.
2008
Atti della conferenza internazionale CIB 11DBMC on Durability of Building Materials and Components ISTANBUL - TURKEY
9789755613291
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/541641
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