What Is the Strip Footing Elastic Settlement Calculator?
The Strip Footing Elastic Settlement Calculator evaluates immediate foundation deflections under wall and column loads.
How Does the Strip Footing Elastic Settlement Calculator Work?
It combines Boussinesq stress distribution, Hooke elastic constitutive relations, and foundation shape influence factors.
Strip Footing Elastic Settlement Calculator Formula & Variables
The core mathematical equation utilized by this calculator is expressed as:
S_e = q \cdot B \left( \frac{1 - \nu^2}{E_s} \right) I_s \cdot C_d
Elastic half-space continuous strip settlement formulation with Fox depth reduction factor.
How to Use the Strip Footing Elastic Settlement Calculator
- Enter net bearing pressure and footing width.
- Specify soil elasticity modulus (Es) and Poisson ratio.
- Input foundation embedment depth below grade.
Step-by-Step Example Calculation
1.5-Meter Continuous Basement Wall Strip Footing
Input Values:
netBearingPressureKPa:150
footingWidthB_M:1.5
soilElasticModulusEsKPa:25000
soilPoissonsRatio:0.3
embedmentDepthDfM:1
rigidityType:rigid
Worked Steps: Results in 11.6 mm (0.46 in) immediate settlement, well within the 25 mm building code limit.
Understanding Your Result
Immediate Settlement (Se): Total downward vertical deflection upon loading.
Settlement Compliance: Comparison against the standard 25 mm (1.0 in) structural limit.
Factors That Affect the Result
- Soil elastic modulus Es has an inverse linear relationship with settlement: doubling soil stiffness halves settlement.
When Should You Use This Calculator?
- Residential basement wall footings, bridge retaining wall abutments, commercial strip foundations, and masonry wall design.
Assumptions & Limitations
- Assumes semi-infinite homogeneous elastic half-space and continuous strip geometry (L/B ≥ 10).
Frequently Asked Questions
Calculation Accuracy & Reference Note
Standard geotechnical foundation engineering method per Bowles and Schmertmann.