V16 — system diagnostic

Retaining walls, slopes and soil stability

Assess water, earth pressure, drainage, surcharge and overall stability before rebuilding a wall or changing a slope.

Checked: 2026-08-22

VERT / GREEN

Document height, slope, drainage, cracks and deformation.

JAUNE / YELLOW

Excavation, fill, pool, tree or downspout near a slope can change stability.

ROUGE / RED

Leaning wall, ground crack, slope bulge or unusual seepage: stop work and obtain evaluation.

Pre-decision triage

Useful tools / data

  • Photos with movement references
  • Basic topographic plan
  • Drainage/rain/work history

What the professional checks

  • Analyze soil, stability and earth pressure
  • Design wall drainage/foundation
  • Assess excavation/fill/surcharge effects

Sources and limits

Requirements depend on location, building, product and scope. RenoAtlas helps prepare the decision; it does not replace required analysis, permits, laboratory work or professionals.

Tools related to this issue

Special check related to this project

V14

Systems to check before closing the work

V14 connects envelope, air, fire, structure, water and code instead of treating each project in isolation.

Renovation dependenciesEnvelope and condensationHidden services before drillingCode versions
V15

Remaining system checks not to miss

V15 covers issues that can block a project, cause a loss or become expensive once concealed.

Before closing wallsOil, propane and tankPost-renovation commissioningCodes + climate by province

Hidden systems and critical interfaces

These checks target costly problems that often appear only after opening assemblies, conversions or changes of use.

V34

Use, excavation and construction constraints

V34 connects use permits, soil, excavation, neighbouring structures and public-space logistics before hard-to-reverse work.

Contaminated soil found during excavation