Square Stirrup Cutting Length Calculator | BBS

Square Stirrup Cutting Length Calculator

Calculate cutting length of square stirrups considering hook length and bend deduction.

Input Details

Width (A) in mm

Depth (B) in mm

Bar Diameter (d) in mm 6 mm 8 mm 10 mm 12 mm 16 mm

Hook Length 9d Hook 10d Hook 12d Hook

Bend Deduction Coefficient Standard value for 90° bend = 0.84d

Calculation Result

Formula Used

Perimeter = 2(A + B)

Total Hook Length = 2 × Hook Length

Total Bend Deduction = 4 × (Coefficient × d)

Final Cutting Length:

L = 2(A + B) + 2(Hook Length) − Total Bend Deduction

Note: Square stirrup contains four 90° bends. Therefore total bend deduction = 4 × (0.84d).

Reference Table

Bend Angle	Deduction
45°	0.42d
90°	0.84d
135°	1.26d
180°	1.68d

Reference Codes

• IS 2502 : 1963 – Bending and Fixing of Reinforcement Bars.
• SP 34 – Handbook on Concrete Reinforcement and Detailing.
• IS 456 : 2000 – RCC Code.

Developed By

Mohan Dangi (Gold Medalist)