Intensity of the Formation of Defects in Residential Buildings with Regards to Changes in Their Reliability

Konior, Jarosław; Sawicki, Marek; Szóstak, Mariusz

doi:10.3390/app10196651

Cited by 14 publications

(22 citation statements)

References 34 publications

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“…As to assess the significance of the discrepancies between the values of the theoretical and observed technical wear distribution of elements of downtown residential buildings, two non-parametric tests with the ordinal measurement scale of variables—the Wilcoxon test and the Sign test—were used for two groups of independent data [ 40 , 41 ]. These tests also involve the proper ordering of ranks, dividing their sums into halves.…”

Section: Methodology Of Researchmentioning

confidence: 99%

Overdurability and Technical Wear of Materials Used in the Construction of Old Buildings

Konior

2021

Materials

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The technical maintenance of old tenement houses traditionally constructed is an ongoing problem, and will continue to be so in the coming years. The subject of the article includes old residential buildings from the turn of the XIX and XX centuries, which are a part of Wroclaw’s downtown district. They can be understood as an essential link in the process of shaping the cultural and social microenvironment of man. The ability of them to meet the multiple expectations of residents depends on the natural aging of tenement houses’ materials, the methods of their maintenance and use, and the influence of the many factors that cause their accelerated wear. The assumed durability is the main reference parameter of the changing age of the inspected tenement houses. The course of the theoretical and observed degree of the technical wear of these buildings was compared with their durability. For the age of these buildings, the technical wear should reach 100%. It was observed that in the first period of use of tenement houses, the phenomenon of “infradurability” occurs, and after exceeding a certain age—depending on the maintenance conditions of the building—the phenomenon of “overdurability” of the building occurs. It was shown that the durability of important elements of old buildings, as a parameter that was defined “a posteriori”, ranges from 153 to 177 years, and is greater than the corresponding literature values indicated “a priori”. The probability of reaching such an age of an element, in which the observed values of technical wear exceed the theoretical values, is much higher than the probability of an opposite event. A comparative analysis of the distribution functions of these probabilities indicates that the probabilities of theoretical wear values are higher than those observed in the case of the assumed literature durability of elements. There is also an inverse relationship for durability that corresponds to the age of the oldest examined elements of tenement houses.

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Section: Methodology Of Researchmentioning

confidence: 99%

Overdurability and Technical Wear of Materials Used in the Construction of Old Buildings

Konior

2021

Materials

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“…The application of the original procedures of the intensification and dilution of membership functions, according to Formulas (12) and (13), to the general Formula (11) of the The final stage of the created model for assessing the technical wear (damage degree) of selected building elements in the three middle states of their technical maintenance is to estimate the size of the impact of elementary damage on the total damage. The study of the observed states and the conclusions from the proposed method of associating the occurring damage with the occurrence of the process of technical wear indicate a significant range of the strength of this relation within one building element in the maintenance states II, III and IV [1][2][3][4][5][6][7]. None of the values of the bi-serial correlation coefficient r(Z), which is a measure of this relationship, reaches a value of 1 in domain [0, 1].…”

Section: Appl Sci 2021 11 X For Peer Reviewmentioning

confidence: 99%

“…In practice, however, there are many cases in which the indeterminacy of the type of inaccuracy, ambiguity and imprecision of meanings can be found. However, these situations are not of a random nature, and therefore traditional probabilistic models may not be adequate [1][2][3][4][5][6][7]. When assessing the possibility of random and/or fuzzy events occurring in construction investment projects, apart from immeasurable (qualitative) criteria, measurable (quantitative) criteria are also used.…”

Section: Introduction 1source Literaturementioning

confidence: 99%

Damage and Technical Wear of Tenement Houses in Fuzzy Set Categories

2021

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The results and conclusions of the research presented in the article concern the topic of the technical maintenance and wear of traditionally erected residential buildings. The cause and effect relations between the occurrence of damage to the elements of tenement houses, which are treated as an expression of their maintenance conditions, and the size of the technical wear of these elements were determined in a representative and purposefully selected sample of 102 apartment houses built in the second half of the 19th and early 20th centuries in the Wroclaw, Poland downtown district “Srodmiescie”. Recognition of the impact of the maintenance of residential buildings on the level of their technical wear was carried out using quantitative methods from fuzzy set categories, and also with the use of the authors’ own model. The created model, based on the Zadeh function, was created in fuzzy conditions for the purpose of assessing the degree of damage to selected building elements. The treatment of the problem with regard to fuzzy criteria allowed for the synthesis of elementary criteria, which give the greatest approximations at the technical research stage of a residential building, into a global assessment of the degree of the wear of its elements. Moreover, it also significantly reduced the subjective factor of this assessment, which had a significant impact on the results of the research obtained in the case of good, medium and poor conditions of tenement houses. It was proven that the conditions of maintenance and use of buildings determine the amount of technical wear of their elements. The state of exploitation of the examined tenement houses is reflected in the mechanical damage to the internal structure of the elements (determined in fuzzy categories). This damage has a significant frequency and cumulative effects, and is characteristic for buildings with satisfactory and average maintenance.

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“…Authors Year Topic of Study Type of Approach [1][2][3][4] Zavadskas, Antuchevičienė, Kapliński, Konior 2007Konior -2015 Decision making Models and methods [5][6][7] Hellwig, Morrison, Jackson 2001 Randomness Statistics [8][9][10][11][12][13][14] Zadeh, Yager, Kaufmann, Sanchez, Kacprzyk 1965Kacprzyk -2007 Uncertainness Fuzzy sets [15][16][17][18] Knight, Menassa, Konior 2011-2020 Uncertainty Appraisal of buildings [19][20][21][22][23][24][25][26][27][28][29] Nowogońska, Konior…”

Section: Referencementioning

confidence: 99%

“…The problem of the damage and destruction of residential buildings is widely described in the literature [19][20][21][22][23][24][25][26][27][28][29]. There is even a classification of damage that is characteristic for different types of buildings [30][31][32][33][34][35][36][37][38], e.g., those erected using industrialized methods or those with traditional construction.…”

Section: Technical Damage and Wearmentioning

confidence: 99%

Fuzzy Relations Matrixes of Damages and Technical Wear Related to Apartment Houses

Konior

Stachoń

2021

Applied Sciences

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The research presented in this article was conducted on a representative and purposefully selected sample of 102 residential buildings that were erected in the second half of the nineteenth and early twentieth centuries in the downtown district of Wroclaw (Poland). The degree of the technical wear of an old residential building is determined by the conditions of its maintenance and operation. The diagnosis of the impact of the maintenance of residential buildings on the degree of their technical wear was carried out using quantitative methods in the categories of fuzzy sets and also by using the authors’ own models created in fuzzy conditions. It was proved that the expression of the operational state of a building, considered as the process that plays the greatest role in its accelerated destruction, is mechanical damage to the internal structure of its elements. This damage is determined in the categories of fuzzy sets and has a high frequency and a cumulative effect of occurrence, which are characteristic for buildings in satisfactory and average maintenance conditions. The use of simple operations in fuzzy set calculus enabled the impact of elementary damage that occurs with a specific frequency, as well as the measure of its correlation on the observed technical wear of building elements to be considered. As a result, it was possible to identify the elementary damage that determines the degree of the technical wear of a building element. For each of the selected building elements, the maximal and minimal fuzzy relational equations (damage and technical wear) were determined. Their solutions were given in the form of clear relational matrixes that constitute big data arrays. They define the domain and range of the maximal and minimal fuzzy relations, the height of the fuzzy relations, their differences, and the place of their occurrence between the maximal and minimal dependencies.

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Intensity of the Formation of Defects in Residential Buildings with Regards to Changes in Their Reliability

Cited by 14 publications

References 34 publications

Overdurability and Technical Wear of Materials Used in the Construction of Old Buildings

Overdurability and Technical Wear of Materials Used in the Construction of Old Buildings

Damage and Technical Wear of Tenement Houses in Fuzzy Set Categories

Fuzzy Relations Matrixes of Damages and Technical Wear Related to Apartment Houses

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