21 Sep
2014
21 Sep
'14
3:42 p.m.
"cycloid" -> "catenary" https://en.wikipedia.org/wiki/Sagrada_Fam%C3%ADlia At 01:19 PM 9/21/2014, Warren D Smith wrote:
Another idea is an extremely large-span arch (if a constant-diameter rod is bent into the shape of a "cycloid" curve, then the stresses in this arch are purely compressive).