TUTORIALS
How to Calculate Cutting length of Spiral or Helical Stirrups
In this construction video tutorial, Deepak Kumar, the renowned civil engineer will provide some useful guidance on how to calculate cutting length of spiral or helical stirrups.
Column diameter = 900 mm
Clear cover = 40 mm
Column size = 4 m
Spacing = 200 mm centre to centre
Height = 4000 mm
Stirrup diameter = 900 – 2 x clear cover
Stirrup diameter = 900 – 2 x 40
Stirrup diameter = 820 mm
Helical stirrup cutting length = n x square root (c2 + s2)
n = number of turn
c = circumference of stirrup
s = spacing
n = Height/Spacing = 4000/200 = 20 turn
c = πd = 3.14 x 820 mm = 2574.8 mm
Helical stirrup cutting length = 20 x square root ((2574.8)2 + (200)2)
Helical stirrup cutting length = 20 x 2581.85 = 51637 mm = 51.64 m
Watch the following video to learn the complete process.
Lecturer: Civil Engineer Deepak Kumar
