RCC Column Design Calculator – IS 456

📏 Column Geometry

Width (b)

Depth (D)

Effective Length (leff)

Clear Cover

⚡ Loading

Factored Axial Load (Pu)

Factored Moment (Mu)

kN·m

🧱 Materials

Concrete Grade

Steel Grade

Main Bar Dia

Tie/Lateral Dia

📊 Design Results

Section Classification

leff / b

—

ratio

Column Type
—
IS 456 Cl.25.1

Steel Requirement

Ag (Gross Area)

—

mm²

Asc Required
—
mm²

No. of Bars

—

nos

Asc Provided

—

mm²

p (% Steel)

—

Tie Spacing

—

mm c/c

Load Capacity

Pure Axial Capacity
—
kN

Ecc. (min)

—

IS 456 Checks

Check	Required	Provided	Status

* Short column assumed if leff/b ≤ 12. For slender columns, additional moment per IS 456 Cl.39.7 is added.

📏 Column Cross-Section