How To Calculate The Cutting Length of Stirrups in Columns
How To Calculate The Cutting Length of Stirrups in Columns
How To Calculate The Cutting Length of Stirrups in Columns
But if you cut this length of a bar for making the stirrup, it’ll be bigger than
the required size.
If you want to get the stirrup’s size as you require, you need to calculate the
cutting length of a stirrup.
But…
So, if you cut a bar as the length of the actual stirrup, you won’t get the
desired size of the stirrup.
Because you bend the bar several times to get the stirrup’s shape.
To get the cutting length of a stirrup’s bar, you need to deduct the increased
length for bending.
So the cutting length of a stirrup will be,
= Actual length of stirrups — increased length due to bending
The formula for calculating the cutting length of a rectangular stirrup is,
= (2 × long side of stirrup) + (2 × short side of stirrup) + (2 × hook length)
— (3 × 90° bend) — (2 × 135° bend)
The formula for calculating the cutting length of the circular stirrup is,
= Circumference of the stirrup + (2 × hook length) — (2 × 135° bend)
The circumference of the stirrup is,
= π × Diameter of the stirrup
The diameter of the stirrup is,
= Diameter of the column — (2 × clear cover)
= 600 mm — (2 × 40mm)
= 520 mm.
So the circumference of the stirrup is,
= π × 520 mm (π = 3.14)
= 1632.80 mm.
And the cutting length of the circular stirrup is,
= Circumference of the stirrup + (2 × hook length) — (2 × 135° bend)
= 1632.80 + (2 × 75) — (2 × 30)
= 1722.80 mm.
Calculating The Cutting Length Of Spiral Stirrups
The formula for calculating the cutting length of spiral stirrups is,
= 50 × √{(1570)2 + (200)2}
= 1582.68 mm.
Formula:
The cutting length of a triangular stirrup is,
= (all arm's length of the stirrup) + (2 × hook length) — (4 × 135° bend)
Calculating the arm length of the triangle is a little bit tricky.
You need to apply a geometrical formula.
Don’t worry. I’ll make the thing as simple as possible.
See the image below:
By Sai Metkari