12 complete symptom paths42 guides and 60 questions in each1,460 Grade A articlesOne searchable, connected knowledge library140 official sourcesEvidence context with explicit limits
STRUCTURED EVIDENCE SESSION

Crack geometry: finish separation versus structural movement

Photograph both endpoints with scale, record width at fixed points, and note offset, sticking doors, floor change and reopening after repair.

Browser-local draftNo session answers are sent to the server. Evidence balanceScores organize observations; they are not probabilities. No repair authorizationStop signals override the ordinary workflow.
01
Freeze the evidence

Record the condition before interpreting it.

02
Evidence ledger

Mark what raises or weakens each route.

Leave unknown items unmarked. Contradictory observations are useful evidence.

1

Finish or drywall joint movement

A surface joint opens with ordinary seasonal or finishing movement without deeper displacement.

0
Raises fit +2 each
Lowers fit −2 each
2

Foundation or framing movement

Differential movement changes geometry across finishes, openings or structural elements.

0
Raises fit +2 each
Lowers fit −2 each
3

Material shrinkage or local drying

Timber, plaster or filler changes dimension and creates a local non-progressive separation.

0
Raises fit +2 each
Lowers fit −2 each
03
Decision points

Change one condition at a time.

An answer changes investigation order; it does not prove a concealed condition.

1

Is there measurable offset, widening, or nearby door and floor change?

If yes: Escalate structural movement for qualified assessment.

If no: Continue a fixed-point log before cosmetic repair.

2

Does the crack follow a known finish joint and remain stable across seasons?

If yes: Finish movement becomes more likely.

If no: Keep material and structural alternatives open.

Safety interlock

Stop signals override scoring.

Mark the stop state when any listed boundary is present. Do not create a better clue by increasing exposure.

  • Seek urgent assessment for rapid change, bulging, instability or loss of support.
  • Do not conceal a changing crack before its movement has been documented.
05
Current conclusion

Explain what changed the ranking.