Substructure Handover Dossier Checklist (QA/QC, Tests, Warranties)

The checklist

Preliminaries & Scope Boundaries

1. 1Confirm dossier covers only substructure works (foundations, piles, pile caps, rafts, basement slabs, retaining walls) and excludes O&M manuals; evidence: signed scope statement referencing drawing packages.
2. 2Appoint a dossier coordinator and define RACI for collection, QA review, approvals, and sign-off; evidence: appointment memo, contact list, and responsibilities matrix.
3. 3Establish document naming and revision control per project procedure; evidence: approved document control plan and a sample set passing a 10-file audit.

QA/QC Records

1. 4Compile approved ITPs and completed inspection checklists for substructure activities; evidence: signed ITPs with hold/witness points released before pours.
2. 5Collect material certificates: cement compliance, rebar mill certificates with heat numbers, waterproofing datasheets; evidence: certificates cross-referenced to delivery notes.
3. 6Assemble concrete mix design approvals and batch tickets; evidence: plant tickets with batch numbers, truck IDs, time stamps, and delivered volume in m³.
4. 7Gather as-built drawings stamped by surveyor, including coordinates and levels in m; evidence: PDF/CAD files marked “As-Built” with survey sign-off.
5. 8Include NCRs/CARs with verified closures; evidence: closure reports, corrective action photos, dates, and responsible party signatures.

Test & Inspection Reports

1. 9Concrete strength results (7/28-day) meet specified fck in MPa; evidence: lab reports with statistical summary confirming compliance per approved project specifications.
2. 10Record slump (mm) and concrete temperature (°C) per pour; evidence: field test sheets showing results within specified tolerances and pour IDs.
3. 11Provide rebar cover checks or scanning results; acceptance: cover ≥ specified mm; evidence: cover meter logs with grid references and photos.
4. 12Include waterproofing integrity tests: holiday/spark and flood; acceptance: no breaches or leaks; evidence: test readings, duration (h), and annotated photos.
5. 13Submit pile integrity/low-strain tests and PDA where applicable; acceptance: no major defects; evidence: reports with signal plots and interpreted results.
6. 14Provide plate load or CBR results for bearing layers; acceptance: ≥ design value (kPa or %); evidence: signed geotechnical reports with locations.
7. 15Attach survey reports for top-of-concrete levels; tolerance: ±5 mm unless noted; evidence: total station exports and level books signed by surveyor.

Warranties & Certificates

1. 16Manufacturer warranties for waterproofing, joint systems, and protective coatings; evidence: warranty letters stating term (years) and conditions.
2. 17Installer workmanship guarantees for substructure trades; evidence: signed guarantees commencing at practical completion date.
3. 18Third-party certifications for piles/precast (e.g., factory production control); evidence: valid certificates covering production dates.
4. 19Calibration certificates for testing equipment (slump cones, thermometers, cover meters); evidence: certificates valid on test dates.

Approvals & Permits

1. 20Authority permits/approvals for excavation, dewatering, and temporary works; evidence: permits with validity dates within construction period.
2. 21Consultant/Engineer approvals for material submittals and method statements; evidence: “APPROVED” stamps with revision and date.
3. 22Inspection requests/hold-point releases for critical pours and waterproofing; evidence: signed IRs prior to commencement.
4. 23Final acceptance of substructure works; evidence: consultant acceptance letter with punch list closed and dates.

Dossier Assembly & Control

1. 24Create index and table of contents with hyperlinks; evidence: master index v1.0 cross-referencing all documents.
2. 25Apply file naming, version control, and PDF bookmarks; evidence: QC audit of 10 files passes without findings.
3. 26Generate searchable PDF/A dossier and zipped source set; evidence: PDF/A compliance report and checksum file.
4. 27Prepare deliverables register with metadata (discipline, grid, pour ID); evidence: validated CSV/Excel register.
5. 28Embed QR code linking to repository or checksum page; evidence: QR printed on cover and footer of exports.
6. 29Obtain digital signatures from contractor, consultant, and client; evidence: e-signature log with UTC timestamps.

Preview the printable checklist

Preview page one below. Open the image or download the PDF for all pages.

At a glance

• Deliver a single-source, evidence-backed package for substructure works that integrates ITPs, material certificates, lab tests, survey as-builts, warranties, and approvals. Explicitly exclude O&M manuals to keep scope tight and prevent cross-scope confusion or closeout delays.
• Build reliable traceability with consistent file naming, revision control, metadata (location grids, pour IDs), and cross-referencing from index to evidence. This structure speeds consultant review, reduces queries, and safeguards against disputes by linking every claim to primary records.
• Interactive online checklist with tick, comment, and export features secured by QR code. Collaborate in real time, attach photos and reports, and generate a PDF/A dossier and Excel registers that meet audit expectations and support rapid, defensible handover decisions.

How to compile, collaborate on, and sign off this dossier

1. Preparation: appoint a dossier coordinator; gather source registers (ITPs, lab tests, as-builts, approvals); ensure access to PDF editor, spreadsheet tool, and e-sign platform; brief team on exclusions (no O&M).
2. Set up document control: apply naming convention, revision rules, and metadata fields (discipline, grid, pour ID); create a master index and evidence register.
3. Using the interactive checklist: start interactive mode, assign items, tick progress, and log comments with attachments (photos, reports, signatures) against each requirement.
4. Validate evidence: spot-audit at least 10 items for signatures, calibration validity, and acceptance tolerances; resolve gaps via RFIs or supplementary testing.
5. Assemble dossier: hyperlink index to evidence, add PDF bookmarks, and generate a searchable PDF/A master plus a zipped source package with checksum.
6. Export and authenticate: export the index and registers to PDF/Excel; embed a QR code linking to the repository or checksum verification page.
7. Sign-Off: route the dossier for digital signatures by contractor, consultant, and client; archive the signed set and lock revisions with a closure memo.

Scope, Boundaries, and the Value of a Focused Substructure Dossier

A disciplined dossier starts by defining what belongs—and what stays out. This checklist targets foundations, piles, pile caps, rafts, basement slabs, and retaining structures, assembling QA/QC records, test reports, warranties, and approvals. It deliberately excludes O&M manuals to prevent scope creep that confuses reviewers and stalls closeout. By aligning content with approved project specifications and authority requirements, the package demonstrates that materials, methods, and results meet acceptance criteria. The payoff is speed and certainty: quicker consultant approvals, fewer resubmissions, reduced claims risk, and a defensible record that protects all parties. Clear boundaries also help site teams focus collection efforts where they matter most—on test evidence, traceability, and sign-offs that prove conformity. The result is a clean, auditable handover that anchors the start of superstructure works and supports payment milestones without ambiguity.

• Keep O&M manuals out to avoid cross-scope delays.
• Tie every record to drawings, pours, or locations.
• State acceptance criteria clearly next to evidence.
• Use approvals and releases to prove timing compliance.

Traceability, Indexing, and Document Control that Survive Audits

Traceability underpins review speed and legal resilience. Adopt a naming convention that embeds discipline, location grid, pour ID, and revision; maintain a live register mapping index entries to evidence. Use PDF bookmarks and hyperlinks so reviewers can jump from the index to primary documents instantly. Audit a sample set to catch missing signatures, invalid calibration dates, or obsolete revisions before submission. Produce a searchable PDF/A master and include original source files in a zipped archive for transparency. On real projects, this approach short-circuits endless RFI loops: for example, an IR release linked directly to batch tickets and 28‑day results ends debate about pour timing and conformity. The combination of structure, metadata, and cross-references turns a pile of files into a coherent quality proof accepted the first time.

• Standardise file names and embed location metadata.
• Maintain a live register with hyperlink targets.
• Audit 10 random files for signatures and dates.
• Deliver PDF/A plus the zipped source set.

Acceptance Evidence: Tests, Warranties, and Approvals that Matter

Acceptance hinges on measurable results and valid endorsements. For concrete, confirm strength in MPa meets fck with adequate sampling and lab accreditation. Cross-check slump (mm) and temperature (°C) logs against pour IDs. Verify rebar cover via scans or spot checks meets the specified minimum. For waterproofing, provide holiday/spark test reports and documented flood tests showing no leaks. Calibrations for instruments must be valid on the test dates. Warranties from manufacturers and installers should specify terms and triggers, while authority permits and consultant approvals must align with construction dates. Typical pitfalls include missing survey sign-off for levels, unclosed NCRs, and expired calibration certificates. This checklist guides you to close those gaps early so final acceptance is frictionless and backed by unambiguous evidence.

• Match tests to pours, grids, and dates.
• Confirm calibration validity on test dates.
• Show waterproofing integrity with photos and logs.
• Close NCRs/CARs with verified actions.