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Heinz Isler's Infinite Spectrum: Formfinding in Design

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<strong>He<strong>in</strong>z</strong> Isler, Load-test model for shell<br />

of the Flieger Flab air museum,<br />

Dübendorf, near Zurich, 1987<br />

left: Isler rigorously load-tested each<br />

new shell type us<strong>in</strong>g res<strong>in</strong> models<br />

monitored with stra<strong>in</strong> gauges. The<br />

models were held <strong>in</strong> timber frames and<br />

loaded by a s<strong>in</strong>gle weight hang<strong>in</strong>g from<br />

an elaborate system of spreader beams<br />

and str<strong>in</strong>gs, as shown here for the 18.6<br />

x 51.7 metre (61 x 169.6 foot) shells<br />

of an aircraft museum <strong>in</strong> collaboration<br />

with architects Haus + Herd.<br />

<strong>He<strong>in</strong>z</strong> Isler with Copeland Associates and<br />

Haus + Herd, Swimm<strong>in</strong>g pools, Norfolk<br />

Health & Racquets Club, Norwich, 1991<br />

below: The wood-wool <strong>in</strong>sulation used<br />

to l<strong>in</strong>e the formwork dur<strong>in</strong>g construction<br />

is left <strong>in</strong> place, creat<strong>in</strong>g a warm and<br />

acoustically deadened environment for<br />

the swimm<strong>in</strong>g pools which typically span<br />

up to 35 x 35 metres (114.8 x 114.8<br />

feet). The shell form elegantly reduces the<br />

heated volume while <strong>in</strong>troduc<strong>in</strong>g natural<br />

daylight through the clear facades.<br />

69

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