Expert/source verification requiredEdition-dependent or normative details must be confirmed against the adopted standard and National Annex before project use.
Liquefaction awarenessTopographic effectsProblematic depositsSpecialist assessment
Learning objectives
In this lesson
- Escalate unusual site conditions early.
- Liquefaction cannot be reduced to one factor.
Engineering explanation
Loose saturated soils, significant slopes, unusual stratigraphy, potential instability or pronounced topography can require investigation beyond routine classification. Liquefaction is a deformation and stability problem, not merely a spectrum-factor adjustment. Responsibilities, investigation scope, foundation assumptions and soil–structure decisions must be documented, and specialist conclusions transferred into the structural model and drawings.
Key takeaways
What to carry forward
- Escalate unusual site conditions early.
- Liquefaction cannot be reduced to one factor.
- Transfer geotechnical conclusions into the model.