BAR BENDING SCHEDULE OF RCC COLUMN
Detailed RCC Column Reinforcement Calculator for Civil Engineering Projects
General Reinforcement Detailing of RCC Column
Explanation of Figure
- Main bars resist compression and bending stresses.
- Lateral ties prevent buckling of main bars.
- Column bars extend inside slab and footing for anchorage.
- Closer tie spacing improves confinement.
- All dimensions are measured along centerline.
Detailed Understanding of Column Reinforcement
1. Longitudinal Reinforcement
- Main vertical bars carry compression and bending stresses.
- Bars transfer loads safely to footing.
- Bars improve stiffness and strength of RCC column.
Development Length = 50D
2. Lateral Ties / Stirrups
- Prevent buckling of main bars.
- Maintain spacing between vertical bars.
- Provide confinement to concrete.
- Improve seismic performance.
135° Hook Length = 12D
3. Concrete Cover
- Protects reinforcement from corrosion.
- Improves durability and fire resistance.
- Ensures proper concrete compaction.
Recommended Concrete Cover
| Exposure Condition | Recommended Cover |
|---|---|
| Mild Exposure | 25 mm |
| Moderate Exposure | 40 mm |
| Severe Exposure | 50 mm |
| Very Severe Exposure | 60 mm |
| Extreme Exposure | 75 mm |
Dynamic Column BBS Calculator
Calculation Result
Standard Reinforcement Values
| Description | Standard Value |
|---|---|
| Development Length | 50D |
| 90° Bend Deduction | 2D |
| 135° Hook Length | 12D |
| 135° Bend Deduction | 3D |
Disclaimer
This RCC Column BBS Calculator is developed for educational purposes, preliminary estimation, and general civil engineering understanding only.
- Always verify reinforcement detailing with approved structural drawings.
- Cross-check all calculations manually before fabrication or construction.
- Values may vary depending upon structural design and site conditions.
- This calculator does not replace professional structural design.
- Follow latest IS Codes and project specifications.
- Developer is not responsible for construction errors arising from use of this calculator.
Important IS Code References
- IS 456 : 2000 → Plain and Reinforced Concrete
- IS 2502 : 1963 → Bending and Fixing of Reinforcement Bars
- SP 34 → Reinforcement Detailing Handbook
- IS 13920 → Ductile Detailing
- IS 1786 → High Strength Reinforcement Steel
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