578 research outputs found
Nieuwe maltechnieken voor vrije vormen
No full textDe bouwmethodes voor free form architecture zijn op dit moment niet wezenlijk anders dan bij rechte vormen. Arno Pronk van de TU Eindhoven experimenteert echter met mallen op basis van membranen en gaas, die met spuitbeton worden verhard. De technieken maken eIke vorm mogelijk
Research on the combination of water and membranes as a structural building material
No full textp. 3024-3033The aim of this paper is to investigate the combination of water and membranes for
temporary architectural applications.
Water as a construction material, can be useful for three different purposes: first of all,
thanks to its thermal mass, it can be used as a medium for cooling down or heating up
buildings (Pronk et al [6]); secondly water is uncompressible and, in combination with air,
can be used as part of a structural element; thirdly the mass of water could work as a sound barrier so it can be used as sound insulation material (Rodrigues and Coutinho [7]).
This paper shows the result of the structural behaviour. There is another paper about sound insulation properties of water. The research in both structural and sound insulation fields was carried out in the laboratories of Technische Universiteit Eindhoven, The Netherlands.
The prototype is a "waterbeam" of 2 m span. Starting from the Tensairity(R) technology
principle (Luchsinger et al [8]) developed by Airlight, the purpose of this experiment is to
replace the iron struts with a second membrane chamber filled with water. Water works
well in compression and air prevents buckling. The result is a rigid structural element made by non-rigid material (water, air, membranes and cables) with a significant reduction of weight and cost of transportation compared to the traditional iron beam but also compared with the Tensairity(R) system. Different bending tests were carried out. In each test, the two chambers of the beam were filled with air or water to understand the material behaviour.The comparison between the results shows that water works slightly better than air (stiffness increase of a range of 8-13% in the elements filled with water).
Water application in architecture showed promising results. Further investigation (pure
compression tests on columns, multiple layers sound barrier) should be carried out. These results could give architects new design opportunities and solutions concerning temporary buildings and moveable architecture. Moreover the company and building construction industry could develop innovative structural elements and new insulation components.Pronk, A.; Maffei, R.; Martin, H. (2009). Research on the combination of water and membranes as a structural building material. Editorial Universitat Politècnica de València. https://riunet.upv.es/handle/10251/670
Arno Herzberg Collection 1930s-1992
No full textThe collection consists most entirely of newspapers clippings of Arno Herzberg’s articles. The articles deal with the Jewish situation in Germany in the 1930s, Israel and her problems with the outside world, Jewish holidays, and a small amount of articles dealing with economic issues, such as taxes. Other materials include a small amount of correspondence, manuscripts (all the manuscripts are photocopies lacking any annotations or remarks), and a memoir depicting the Hess family members between 1930 and the 1940s, including their imprisonment in the Bergen-Belsen concentration camp. There are no materials dealing with Arno Herzberg’s involvement with the Jewish Telegraphic Agency and very few materials pertaining to his primary profession (accounting.)Arno Herzberg was born in Germany in 1908. Between 1934 and 1937 he served as head of the Jewish Telegraphic Agency, an international news agency. Arno Herzberg left Germany in the late 1930s and settled in New York. He worked as a public accountant and published extensively on topics such as German Jews, Israel, and the Holocaust. He published most of his articles in the Jewish press. Arno Herzberg died in 2002Arno Herzberg was also the author of 'Der Kontingentsbegriff im Recht : (Beteiligungsziffern) eine wirtschaftsrechtliche Studie', published in 1932 and 'Saving Taxes through Capital Gains', 1957.digitize
Letter from Arno B. Cammerer to J. R. Eakin
No full textLetter from Arno B. Cammerer to J. R. Eakin describing the procedure for purchasing Bright Angel Trail
Letter from Arno B. Cammerer to Carl Hayden
No full textLetter from Arno B. Cammerer to Carl Hayden on building a Union Chapel in the Grand Canyon
Letter from Arno B. Cammerer to Carl Hayden
No full textLetter from Arno B. Cammerer to Carl Hayden informing him of the removal of the dynamite from Grand Canyon Village to a point near Rowe Well
Letter from Arno B. Cammerer to Carl Hayden
No full textLetter from Arno B. Cammerer to Carl Hayden regarding the storage of dynamite in Shoski Canyon. Written in red pencil at the top, "My dear Jesse, For your(?) further information, Jack
Research on the combination of water and membranes as sound insulation building material
No full textp. 3034-3040This research concerns a 200 mm thick panel filled with water. The airborne sound
insulation of this panel was measured in accordance with standard ISO 140-3 [2]. Results
show that the single number rating for the airborne sound insulation Rw [3] for an average water layer thickness of 200 mm is 48 dB. This value is comparable to the one of a 150 mm brick wall or 100 mm concrete panel. Predictions about sound insulation of the same system at different thickness and possible applications such as highway sound barrier or construction site sound barrier are presented in the following pagePronk, A.; Maffei, R.; Martin, H. (2009). Research on the combination of water and membranes as sound insulation building material. Editorial Universitat Politècnica de València. https://riunet.upv.es/handle/10251/670
Letter from Arno B. Cammerer, Acting Director National Park Service, to Carl Hayden
No full textLetter from Arno B. Cammerer to Carl Hayden reiterating the safe nature of the dynamite storage
Letter from Arno B. Cammerer, National Park Service, to Carl Hayden
No full textLetter from Arno B. Cammerer to Carl Hayden regarding the storage of dynamite in Shoski Canyon
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