But just imagine the possibilities... short-squat soda bottle... tall-thin soda bottle... oddly shaped soda bottle that looks like it won't work but does... ;)
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#17
General Discussion / Building Golden Gate style Bridges
October 15, 2001, 11:57:37 PM
Hanging a cable is a cool idea... and its accurate enough that it probably works 
http://www.pontifex2.com/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>
Technically however a hanging cable is a catenary (formed by adding two exponentials) whereas a light cable supporting a heavy deck (the case for Pontifex) is a parabola (x squared relative to the centre).
If you can't be bothered with a calculator, just increment each successive segment from the centre by an increasing amount. Eg 1unit, 2units, 4, 7, 11, 16 etc. This is a parabola, the perfect shape for a suspension bridge with light cableshttp://www.pontifex2.com/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>
Technically however a hanging cable is a catenary (formed by adding two exponentials) whereas a light cable supporting a heavy deck (the case for Pontifex) is a parabola (x squared relative to the centre).
If you can't be bothered with a calculator, just increment each successive segment from the centre by an increasing amount. Eg 1unit, 2units, 4, 7, 11, 16 etc. This is a parabola, the perfect shape for a suspension bridge with light cables