RESEARCH ARTICLE

The effect of optical anisotropies on building glass façades and its measurement methods

  • M. Illguth , 1 ,
  • C. Schuler , 1 ,
  • Ö. Bucak , 2
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  • 1. University of Applied Sciences Munich, Department of Civil Engineering, Karlstrasse 6, 80333 Munich, Germany
  • 2. Labor fuer Stahl-und Leichtmetallbau GmbH, Karlstrasse 6, 80333 Munich, Germany

Received date: 22 Sep 2014

Accepted date: 25 Jan 2015

Published date: 20 Jul 2015

Copyright

2014 This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Commonly, in the evaluation of the optical appearance of glass panes in building envelopes, anisotropies are a reason for a dispute between the architect or client and the façade manufacturer. Sometimes each party has a different perception, how strong the anisotropies are and what is permissible.

This paper discusses in the first part the formation of the anisotropies and their natural sources. It is shown that the appearance of this phenomenon is dependent on the environmental conditions of the building site as well as the glass quality. If the application of thermally tempered glass cannot be avoided, the quality assurance of the production process has to be carefully planned.

Furthermore a method for the quantitative measurement of anisotropies is proposed and prescribed in detail. This method can assist in the quality assurance process. Measurements are showing that probably the best tempered glass offers slight anisotropies and that under unfavorable conditions these anisotropies can become evident.

Cite this article

M. Illguth , C. Schuler , Ö. Bucak . The effect of optical anisotropies on building glass façades and its measurement methods[J]. Frontiers of Architectural Research, 2015 , 4(2) : 119 -126 . DOI: 10.1016/j.foar.2015.01.004

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