how to calculate cutting length of helix or spiral

amd007

Elite Member
Calculation of cutting length of a helix

Considering the following data for illustration : 1531480319278.png

Ht of helix - 15'
Top dia - 4'
Bottom dia - 4'
pitch - 3'
1531480984751.png1531480869461.png

n = no of turns
C = circumference of the spiral
p = pitch
1531480572497.png
Hope its clear to you how to do it.....
 

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