Thesis ThesisHenryPineda15 | Page 6

Textile hybrid: based on isolated bent compression members Master´s degree in Parametric Design in Architecture III. BACKGROUND Through the history the last 6 decades there have been some very significant progress in the the matter. There are many books and documents which treat this topic. For this research we will show the main representative examples. Due the fact that we are working with membrane structures combined with bent beams, tensión and compression forces are mixted. It seems that is a novel way fo designing. However this concept applied to structures is not new and is known as “Tensegrity”, coined officially by the engineer Buckminster Fuller. Previous to him there were some advances in the same concept and others in the field of tensile membrane structures. Figure A1: “Study in balanced” by Karl Loganson. Year:1920 3.1. ORIGINS AND PIONEERS 3.1.1. KARL LOGANSON’S SCULPTURE The first evidence found thorugh the history with the behaviour of tesegrity was the sculpture called “Study in balance” (Figure A1) in 1920, made by the artist Karl Loganson [Peña, 2012]. It was presented in the Obmokhu Exhibition in Rusia. Loganson was a co-founder of the “First working group of constructivists”. He was a progressive artist, oriented to tecnology and engineer. In the sculpture Loganson balance three inclined sticks that work in compresion with a continuos string streesing the sticks. Also the sculpture has the particularity of changing the shape. Pulling the cord the inclination of the sticks change Christina Lodder, scholarly of that time, she figured out the utility of this structures for portable structures, furnitures and folding roofs. Unfortunately Loganson´s work was not recognized in Rusia. Figure A2: “The X piece” by Kenneth Snelson. Year:1948 - Peña, D. 2012. Aplicacion de los principios del “tensegrity” a las construcciones textiles atirantadas. Research thesis. 6