The nests of termites gain structural support for chambers, ventilation shafts, and insulating cavities because arches are the main architectural element.

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"The basic building step in many termites involves gluing fecal pellets to make arches; the arches, supporting a network of other arches, provide most of the structural strength needed to support specialized chambers, ventilation shafts, and insulating cavities, and they supply convenient walkways as well. Recycling feces is a superb way to turn a problem into a solution…The construction of the arches goes well beyond flexibility and variation…Columns are neither too close nor too far apart to permit the subsequent construction of arches." (Gould and Gould 2007:142-144)

Book
Animal Architects: Building and the Evolution of IntelligenceBasic BooksMarch 6, 2012
James L. Gould

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Living System/s