Who this is for
Commercial managers, project managers, contract administrators and client-side representatives who need to validate claimed quantities before approving milestone payments, variations, subcontractor claims or close-out adjustments.
← Back to Resources
Commercial Survey Support
Quantity Verification Surveys for Construction and Earthworks Projects
Survey-backed quantity verification helps project teams confirm claimed quantities before payments, variations or commercial decisions are approved. Noble Surveys captures and reconciles field data so bulk earthworks, stockpiles, pavement volumes and drainage quantities can be reviewed against clear evidence.
Use it before monthly claims, milestone payments, variation reviews or close-out discussions where contractor data, client-side records and actual site conditions need to be aligned.
What problem it solves
Quantity disputes often arise when parties rely on different surface models, outdated design revisions, machine control data, truck counts or unsupported volume assumptions. Survey-backed verification gives the project team a common evidence base before payment or variation decisions are made.
When it matters
Use quantity verification before monthly progress claims, major earthworks payment milestones, stockpile drawdowns, pavement layer claims, drainage excavation claims, imported fill reconciliation or practical completion close-out.
What Noble Surveys delivers
Noble Surveys can provide survey control checks, UAV and ground-based data capture, cut/fill models, stockpile volume reports, cross-sections, annotated plan markups, photographic records and concise reconciliation summaries for project and commercial teams.
Practical verification checklist
Use these steps to keep every claim cycle evidence-based and transparent.
Adapt to your contract, but keep the structure consistent.
Prepare the scope
- Confirm design references, approved IFC drawings and recent revisions
- List the pay items or schedule lines that require validation
- Log previous certified quantities to understand trend deltas
Capture field evidence
- Establish or verify survey control shared by both parties
- Scan earthworks, stockpiles or structures using GNSS, total station or UAV as appropriate
- Photograph key areas to pair visuals with tabulated outputs
Analyse and reconcile
- Run cut/fill and stockpile models using the agreed surface intervals
- Compare captured volumes to claimed figures and highlight deltas
- Draft talking points for the next commercial meeting so actions are clear
Document and close out
- Issue signed verification summary with attachments (CSV, PDFs, DWGs)
- Log agreed adjustments in the project cost register
- Schedule the next verification window before the claim cycle restarts
Common questions
What causes quantity disputes on civil projects?
Common causes include different surface dates, unclear pickup boundaries, late design revisions, untracked imported material, stockpile timing differences and machine control models that do not match the latest approved drawings.
How often should quantity verification be completed?
Most WA construction teams run formal verification in line with monthly claims, with ad-hoc spot checks whenever volumes spike or scope changes mid-cycle.
Will UAV data be accepted as evidence?
Yes—when paired with ground control and supporting calculations, UAV-derived surfaces provide defendable accuracy for stockpiles, earthworks and large-area reconciliations.
Can Noble Surveys work with our contractor's data?
We regularly ingest contractor-provided models or machine control files to compare against captured surfaces, highlighting discrepancies in a format both parties can review.
What formats do you provide for finance teams?
Typical packs include PDF summaries, CSV exports, annotated plan sets and photographic records so finance, project controls and clients can cross-reference figures quickly.
Related resources
Earthworks ReconciliationAlign cut/fill models, stockpile movements and imported material tallies.Progress Claim VerificationKeep milestone payments defendable with survey-backed evidence.As-Constructed Documentation GuidePackage roads, drainage, water and sewer assets so approvals land without rewrite cycles.
Need to verify quantities before the next claim cycle?
Send through your schedule of quantities, design references, claim dates and available surface data. Noble Surveys can capture, compare and summarise the evidence your project team needs before approvals are due.