Module 09
Immediate settlement of shallow foundations
The calculation is easy. Knowing E is the hard part.
What this module covers
- Compute immediate settlement of a shallow foundation on an elastic half-space
- Distinguish rigid and flexible foundation behaviour and say which to compare against
- Explain why the modulus, not the equation, dominates the uncertainty
- Select an appropriate stiffness for the stress and strain range a foundation actually imposes
Lessons
Rigid, flexible, and which number you are comparing.
Start lesson →The number that decides the answer, and how to choose it.
Start lesson →
Module checkpoint
Check what you have taken in
2 questions
Question 1
A flexible foundation's centre settles 18.3 mm. Taking the rigid case as 93% of that, what does an equivalent rigid foundation settle, in mm?
Question 2
Which input dominates the uncertainty in an immediate settlement prediction?