Define the dig area and request locates before digging.
V15 — home system
Underground utilities before digging
Prepare excavation, piles, fences, trees, drains or pools by locating buried infrastructure and work zones.
Checked: 2026-08-21
Markings, tolerance zones and excavation methods near utilities must be respected.
Unlocated utility, exposed/damaged line or mechanized excavation in an uncertain zone: stop.
Useful tools / data
- Marking paint/stakes per instructions
- Dimensioned excavation plan
- Appropriate hand shovel
What the professional checks
- Interpret locate plans
- Define approach/excavation method
- Coordinate utility owners if conflicts
Sources and limits
Exact requirements depend on jurisdiction, building and scope. Triage prepares the decision; it does not replace inspection, permits, calculations or regulated trades.
V17
Specialized systems to cross-check
V17 completes gas, soil, water, fire, climate and structural interfaces.
Advanced systems and special cases
Checks that change sequencing, risk or which professionals must be coordinated.
Hidden systems and critical interfaces
These checks target costly problems that often appear only after opening assemblies, conversions or changes of use.