Factors determining the quality of masonry – differentiation of resistance and reliability
Joanna Zięba
j.zieba@prz.edu.plDepartment of Building Structures, Faculty of Civil and Environmental Engineering and Architecture; Rzeszow University of Technology; 2 Poznańska Street, Rzeszow 35-084; (Poland)
https://orcid.org/0000-0003-1800-5697
Lidia Buda-Ożóg
Department of Building Structures, Faculty of Civil and Environmental Engineering and Architecture; Rzeszow University of Technology, 2 Poznańska Street, Rzeszow 35-084; (Poland)
https://orcid.org/0000-0002-1205-1345
Izabela Skrzypczak
Department of Building Structures, Faculty of Civil Engineering Environmental Engineering and Architecture; Rzeszow University of Technology; 2 Poznańska Street; Rzeszow 35-084; (Poland)
https://orcid.org/0000-0003-0978-3040
Abstract
A house or any other building without walls is truly hard to imagine. The first thing usually associated with walls is, of course, masonry. Today, masonry walls perform a load-bearing function in buildings up to four above-ground floors, in the higher parts of the buildings they perform a protective and stiffening function. However, there is a widespread opinion that the designer does not have to check the bearing capacity of masonry structures because masonry are were stand, are standing and will stand. Not everyone, however, currently works the wall as it should. The problem is that a lot of emphasis is now placed on reducing construction times. Therefore, there are a number of factors affecting the quality of the masonry structure, which overall reduce their safety. The article presents the influence of the quality of masonry on the differentiation of bearing capacity and reliability of an example masonry structure. The analyses included various values γm of the partial factor, recommended in the national annex PN-EN 1996-1, depending on the category of masonry units, class execution of works and type of mortar. In addition, a decrease in load capacity and reliability caused by the increase of the initial eccentric resulting from the inaccuracy of the masonry wall was examined.
Keywords:
masonry structures, reliability of construction, compressive strength, quality assuranceReferences
EN 1996-1-1:2004 Eurocode 6: Design of masonry structures - Part 1-1: General rules for reinforced and unreinforced masonry structures. 2004 CEN.
Google Scholar
Stewart M.G., Lawrence S.J., “Model Error, Structural Reliability and Partial Safety Factors for Structural Masonry in Compression”, Masonry International, vol. 20, no. 3, 2007, pp. 107-116.
Google Scholar
Drobiec Ł., Jasiński R., Piekarczyk A., Masonry structures according to Eurocode 6 and related standards. PWN, vol. 2, Warsaw, 2013.
Google Scholar
EN 1996-1-2:2005 Eurocode 6: Design of masonry structures - Part 1-2: General rules - Structural fire design. 2005 CEN
Google Scholar
EN 1996-2:2006 Eurocode 6: Design of masonry structures - Part 2: Design considerations, selection of materials and execution of masonry. 2006 CEN.
Google Scholar
EN 1996-3:2006 Eurocode 6: Part 3: Simplified calculation methods for unreinforced masonry structures. 2006 CEN.
Google Scholar
EN 771-1:6, Specification for masonry units. 2005 CEN.
Google Scholar
Buda Ożóg L., Skrzypczak I., Szylak K., Raczak A., Masonry constructions – examples of calculations according to Eurocode 6 and probabilistic methods. Rzeszow University of Technology Publishing House, Rzeszow, 2017.
Google Scholar
Rybarczyk T., „Czynniki wpływające na wytrzymałość muru na ściskanie”, Materiały Budowlane, vol. 4, 2016, pp. 74-77. https://doi.org/ 10.15199/33.2016.04.20
DOI: https://doi.org/10.15199/33.2016.04.20
Google Scholar
EN 1990:2002 Eurocode – Basis of structural design. 2002 CEN.
Google Scholar
PN-ISO 2394: General principles of reliability of building structures. 2010 CEN.
Google Scholar
Woliński Sz., Fundamentals of Designing Structures in General Construction. PWN, vol. 3, Warszawa, 2011, pp. 112-146.
Google Scholar
Woliński Sz., “Calibration of partial coefficients for existing structures”, Scientific Notebooks PRz, 2011.
Google Scholar
Nowak A., Collins K., Reliability of Structures. CRC Press, 2012.
DOI: https://doi.org/10.1201/b12913
Google Scholar
Holicky M., Markova J., “Verification of load factors for concrete components by reliability and optimization analysis: Background documents for implementing Eurocodes”, Progress in Structural Engineering and Materials, vol. 2, no. 4, 2000, pp. 502-507.
DOI: https://doi.org/10.1002/pse.55
Google Scholar
Holicky M., Retief J. V., “Reliability assessment of alternative Eurocode and South African load combination schemes fot structural design”, Journal of and South African Institution of Civil Engineering, vol. 47, no. 1, (January 2005), pp. 15-20.
Google Scholar
EN 772-1, Methods of test for masonry units -Part 1: Determination of compressive strength. 2005 CEN.
Google Scholar
Ćwierz J., Cinal W., Kampczyk A., Measurement of deviations of the building facade walls from the vertical plane. https://doi.org/10.17512/znb.2016.1.04
DOI: https://doi.org/10.17512/znb.2016.1.04
Google Scholar
Authors
Joanna Ziębaj.zieba@prz.edu.pl
Department of Building Structures, Faculty of Civil and Environmental Engineering and Architecture; Rzeszow University of Technology; 2 Poznańska Street, Rzeszow 35-084; Poland
https://orcid.org/0000-0003-1800-5697
Authors
Lidia Buda-OżógDepartment of Building Structures, Faculty of Civil and Environmental Engineering and Architecture; Rzeszow University of Technology, 2 Poznańska Street, Rzeszow 35-084; Poland
https://orcid.org/0000-0002-1205-1345
Authors
Izabela SkrzypczakDepartment of Building Structures, Faculty of Civil Engineering Environmental Engineering and Architecture; Rzeszow University of Technology; 2 Poznańska Street; Rzeszow 35-084; Poland
https://orcid.org/0000-0003-0978-3040
Statistics
Abstract views: 353PDF downloads: 41 PDF downloads: 75 PDF downloads: 183
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Budownictwo i Architektura supports the open science program. The journal enables Open Access to their publications. Everyone can view, download and forward articles, provided that the terms of the license are respected.
Publishing of articles is possible after submitting a signed statement on the transfer of a license to the Journal.