MR2

Modulus of Subgrade Reaction (kₛ) Calculator

Soil Type: Soft Clay Medium Clay Stiff Clay Loose Sand Medium Dense Sand Dense Sand Gravel / GW-GP Applied Pressure (q) in kN/m²: Observed Settlement (s) in mm:

Comparison: Das (1999) vs IS:2950 (Part 1) – 1981

Soil Type	Das (1999) kₛ Range (kN/m³)	IS 2950 (Part 1) – 1981 kₛ Range (kN/m³)

💡 Reference: Das, B.M. (1999). *Principles of Foundation Engineering* and IS:2950 (Part 1) – 1981 (Reaffirmed 2014), “Design Considerations for Raft Foundations.”