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

Basement water: surface runoff, soil pressure and plumbing

Mark the first wet point before water spreads and compare exterior discharge, storm duration, soil saturation and dry-weather water use.

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

Surface runoff concentrated at the foundation

Short downspouts, blocked drainage or negative grade load one wall with roof and surface water.

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

Saturated soil entering at a crack or wall-floor joint

Long-duration rain raises moisture pressure and water enters at a foundation discontinuity.

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

Interior plumbing or drain source

A service leak travels down a wall or across the floor and resembles groundwater entry.

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

Can water use reproduce the symptom when the weather is dry?

If yes: Prioritize plumbing and drain routes.

If no: Continue with exterior runoff and soil-pressure mapping.

2

Is the first wet point a crack, the wall-floor joint, or the face of the wall?

If yes: Use that geometry to separate concentrated entry from broad surface wetting.

If no: Improve observation timing before the water spreads.

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.

  • Do not enter standing water where electrical circuits may be energized.
  • Stop if foundation movement, sewage or rapid inflow is present.
05
Current conclusion

Explain what changed the ranking.