Rectangular Stirrup Cutting Length Calculator

This calculator is used to calculate the cutting length of rectangular stirrups used in RCC beams and columns.

Input Details

Width of Stirrup (mm) Clear width of stirrup measured horizontally.

Depth of Stirrup (mm) Clear depth of stirrup measured vertically.

Bar Diameter (mm) 6 mm 8 mm 10 mm 12 mm 16 mm Diameter of reinforcement bar used for stirrup.

Hook Type 10d Hook 12d Hook Hook length is generally taken as 10d or 12d according to detailing practice.

Calculation Result

Formula Used

Cutting Length = 2 × (Width + Depth) + 2 × Hook Length − Bend Deduction

Hook Length = Hook Multiplier × Bar Diameter

Bend Deduction = 8 × Bar Diameter

Explanation of Values

• Width: Horizontal inside dimension of stirrup.
• Depth: Vertical inside dimension of stirrup.
• Bar Diameter: Diameter of reinforcement bar used for stirrup fabrication.
• Hook Length: Additional length provided for anchorage at stirrup ends. Usually taken as 10d or 12d where d is bar diameter.
• Bend Deduction: Reduction in length due to bending of reinforcement bar. Commonly approximated as 8d for rectangular stirrups.

Reference Codes

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