Advanced RCC Design Calculator for Singly and Doubly Reinforced Sections

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Section Parameters

kNm
kNm
MPa
MPa
mm
mm
mm
mm
Please check your input values.
ℹ️ Note

For singly reinforced sections (Mu ≤ Mu,lim), only tension steel is required. For doubly reinforced sections (Mu > Mu,lim), both compression and tension steel are calculated.

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Results

Reinforcement Type: Not Calculated

Enter values and click "Calculate" to see results

Tension Steel Bar Selection

Select bar diameter and click "Calculate Bars"

🔽 Compression Steel Bar Selection

Select bar diameter and click "Calculate Bars"

Section Diagram

Section Type: Not Calculated

Formulas Used

For Singly Reinforced (Mu ≤ Mu,lim):
Ast = 0.5 × (fck/fy) × [1 - √(1 - (4.6 × Mu × 106)/(fck × b × d2))] × b × d
For Doubly Reinforced (Mu > Mu,lim):
Asc = (Mu - Mu,lim) / [fsc × (d - d')]
fsc = [0.0035 × (xu,max - d') / xu,max] × Es
Ast1 = [0.36 × fck × b × xu,max] / (0.87 × fy)
Ast2 = (Asc × fsc) / (0.87 × fy)
Total Ast = Ast1 + Ast2
Depth of Neutral Axis: xu = (0.87 × fy × Ast) / (0.36 × fck × b)
The website is created by Deepanshu / Civil Engineering Department / GNDEC, Ludhiana
Disclaimer: This website is made using AI and may contain some mistakes. Please verify all calculations with standard design codes before implementation.