The applicable proposal, contract, design responsibility and local law govern any project-specific warranty or guarantee. This page is a scoping framework, not contractual wording.
What kinds of commitments are different?
Workmanship warranty, material warranty, process compliance, measured completion criteria and future performance are different commitments. They should not be combined into one vague statement.
What makes an outcome measurable?
Define the asset and zone, baseline, metric, instrument or observation method, tolerance, timing and reviewer. State whether the objective concerns support, level, movement, drainage, structural response or another condition.
Why are exclusions necessary?
Performance can be affected by untreated zones, changing loads, new leakage, erosion, excavation, structural defects, inaccessible ground, altered drainage, extreme events or conditions not identified during investigation.
Can future settlement be ruled out?
No universal statement should be made without a defined design basis and evidence appropriate to the specific mechanism, asset and period. Monitoring and maintenance may remain necessary even after acceptance.
How should uncertainty be managed?
- State assumptions and confidence in the diagnosis.
- Use trials or staged work where appropriate.
- Set hold points and escalation criteria.
- Record conditions encountered and approved changes.
- Define post-work monitoring and owner responsibilities.
What should be provided at close-out?
Provide the installed scope, production records, deviations, verification results, unresolved limitations, maintenance or monitoring actions and the exact basis on which acceptance was reached.
What language should be avoided?
Avoid absolute claims such as permanent, risk-free, guaranteed not to move, suitable everywhere or maintenance-free unless the precise claim is supported, contractually defined and approved for that project.