Isolated footing design as per IS 456 2000

RCC Isolated Footing Design

As per IS 456:2000 Standards

Column Load (P) in kN

SBC of Soil in kN/m²

Column Size (mm)

Steel Grade (fy)

Step 1: Required Footing Area

Increasing load by 10% for self-weight...

A = (P * 1.1) / SBC

Required Area: m²
Adopted Size: m x m

Step 2: Net Upward Pressure (q)

q = P / Area_Provided

Net Pressure: kN/m²

Step 3: Bending Moment (M)

Critical section at face of column...
Projection (X) = (Side - Col)/2 = m

M = (q * X²) / 2

Moment: kNm

Step 4: Steel Calculation (Ast)

Using Effective Depth (d) = 400mm

Ast = (M * 1.5) / (0.87 * fy * j * d)

Required Ast: mm²
Result: Provide 12mm bars @ mm c/c.