It is currently 25 Apr 2017, 17:23
Rod wrote:Having spent 50 yrs designing roads, roundabouts, bridges, etc as well as managing a land survey section - I'm trying to forget all that stuff?
Nice link though Bob.
RogerS wrote:Ooh...you can probably answer this question, then? Why are car parking spaces so narrow?
bugbear wrote:The length-sagitta-radius relationship is important; sagitta is a much more intuitive measure of flat curve segments than radius, but being able to interconvert is very handy.
It crops up in arched alcoves, the theoretical hollow a plane will cut for a given blade projection, and even what the radius needing to mark out a scrub plane blade is.
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