Original scientific paper

Testing and Analysis of Chimney Verticality

Mladen Zrinjski orcid.org/0000-0003-0834-6009 ; Faculty of Geodesy, University of Zagreb, Zagreb, Croatia
Đuro Barković orcid.org/0000-0003-3382-253X ; Faculty of Geodesy, University of Zagreb, Zagreb, Croatia
Antonio Tupek orcid.org/0000-0001-7604-2993 ; Faculty of Geodesy, University of Zagreb, Zagreb, Croatia
Ante Polović ; Geo-KOM Ltd., Duga Resa, Croatia

Abstract

In a chimney life cycle, due to its age, wind and other atmospheric conditions, tectonic activity, construction flaws, and the change of physical and mechanical properties of construction materials, significant chimney deformations and inclinations are plausible and catastrophic collapses can occur. Therefore, it is necessary to periodically analyze the stability of high industrial chimneys, whereby one of the fundamental inspection parameters being the inclination of the chimney axis. Many classical and modern methods for determination and analysis of chimney inclination have been developed. This paper describes a method of testing and analyzing the chimney inclination based on the measurement of the horizontal chimney cross section based on the preestablished geodetic reference network. Circular chimney cross sections are modeled by method of circular regression, and finally the spatial chimney axis is derived by 3D linear regression. In this paper a practical example of the testing and analysis of the inclination of a masonry chimney in the area of the former Duga Resa Cotton Industry in Duga Resa, Croatia, has been given.

Keywords

chimney; geodetic network; circle regression; inclination of chimney axis; 3D linear regression

Hrčak ID:

227002

URI

https://hrcak.srce.hr/227002

Publication date:

30.9.2019.

Article data in other languages: croatian

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