Stone Column Design Calculator with Diagrams Based on IS 15284 (Part 1): 2018 - Guidelines for Stone Columns & IS 8009 (Part 1) for Settlement

Stone Column Design Calculator with Diagrams

Based on IS 15284 (Part 1): 2018 - Guidelines for Stone Columns & IS 8009 (Part 1) for Settlement

Column Arrangement Pattern: Triangular Rectangular (Square) Undrained Shear Strength, c_u (kPa): Effective Unit Weight, γ (kN/m³): Angle of Internal Friction of Stone, φ_c (degrees): Stone Column Diameter, D (m): Spacing of Columns, S (m): Coefficient of Lateral Earth Pressure, K0 (default 0.6): Bearing Capacity Factor, N_c (default 5.0):

Inputs for Untreated Settlement (IS 8009 Part 1 - Cohesive Soils)

Compressible Layer Thickness, H (m): Initial Void Ratio, e_0: Compression Index, C_c: Average Effective Overburden Pressure, p_0 (kPa):

Stone Column Layout Diagrams

Triangular Pattern

Rectangular (Square) Pattern

Cross-Section View

Notes: This tool provides approximate calculations based on IS 15284 (Part 1) and IS 8009 (Part 1). Untreated settlement assumes normally consolidated clay, consolidation component only. Diagrams show plan and cross-section views with D, S, De, a, H, and c_u. For actual projects, consult a geotechnical engineer and the full standards. Surcharge effect assumes Fc'=1. Cross-section assumes column depth = 2D.