Nabin Kumar Ijam | Civil & Hydropower Engineer

ISOLATED FOOTING FOR BIAXIAL LOADING

MATERIAL GRADE

Grade of Concrete (\(f_{ck}\) in MPa):

Grade of Steel (\(f_y\) in MPa):

Bearing capacity of soil (\(σ_b\) in kN/m²):

COLUMN AND FOOTING DIMENSIONS

Width of Column (\(b\) in mm):
Depth of Column (\(d\) in mm):
Length of footing (\(L\) in m):
Breadth of footing (\(B\) in m):
Thickness of footing (\(h\) in mm):

FACTORED LOADS

Axial Loading (\(F\) in kN):
Moment at x-axis (\(M_x\) in kNm):
Moment at y-axis (\(M_y\) in kNm):

DESIGN RESULTS

BEARING STRESSES AT FOUR CORNERS:

\(σ_1\): kN/m²

\(σ_2\):: kN/m²

\(σ_3\):: kN/m²

\(σ_4\):: kN/m²

Check for maximum bearing Stress:

Check for minimum bearing Stress:

1. REINFORCEMENT DESIGN

Limiting moment, \(M_{u_lim}\): kNm

Moment at edge of column, \(M_x\): kNm

Moment at edge of column, \(M_y\): kNm

Area of main reinforcement at x-axis, \(A_{stx}\): mm²

Area of main reinforcement at y-axis, \(A_{sty}\): mm²

2. ONE-WAY SHEAR CHECK

One-way shear force in x-axis, \(F_x\): kN

One-way shear force in y-axis, \(F_y\): kN

Shear reinforcement check in x-axis:

Shear reinforcement check in y-axis:

3. TWO-WAY SHEAR CHECK

Punching stress, \(F_p\): N/mm²

Punching strength, \(\tau_{tw}\): N/mm²

Check for punching strength: