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Underpinning & foundation strengthening · Checklists

Underpinning planning checklist

Use this checklist before you decide

Updated 2026-08-30

Short answer

Use the checklist to document existing foundation depth and load-bearing support and stability. The more specific the documentation, the easier it is to choose the next investigation or solution step.

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Sources and evidence

Method & sources →

Source types stay separate: technical and authority-adjacent sources support rules and risk topics, while project sources document practical experience.

1 technical/authority sourcesUpdated 2026-08-30
□existing foundation depth
□load-bearing support and stability
□crack width and pattern
□existing and planned floor build-up
□outside ground level
□future inspection and maintenance
□intended use of the room
□pipe and cable penetrations
Not every point applies to every building. Structural and regulated work can require local professionals and approvals.

Assessment

Underpinning & foundation strengthening

Foundation work is controlled by load paths and sequence. Existing footing depth, soil and groundwater conditions, crack patterns and the size of each working section can change what is safe to excavate or underpin.

Evidence & moderation

Editorial policy →
Eurocode 7: Geotechnical designEuropean Commission Joint Research Centre↗

Technical terms

Underpinning

Guides

Basement underpinningMonitoring basement cracksBasement contractor scope and handover

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Continue in the same topic

Related guides, problems, checklists, cases and technical terms from the same knowledge area.

GuideBasement contractor scope and handover→GuideBasement underpinning→GuideMonitoring basement cracks→ScenarioCracks appear after basement excavation→CaseSjellonlund, Denmark – floor lowering and underpinning as a partial contract→ProblemCracks or movement→ProblemLow basement / lower the floor→ScenarioA basement crack is getting wider→ChecklistChecklist: Monitoring basement cracks→CaseAmager, Denmark – excavation, sectional underpinning and complete basement renovation→
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