Inspection and Test Plan for Method Statement: Fabrication and Installation of Rectangular Galvanized Iron (GI) Ductwork
AI-assisted inspection and test plan connected to a method statement, with PDF and Excel export.
More than a static template
Unlike a downloadable Word or PDF template, this ITP is an AI-assisted editable starting point directly connected to its method statement. Every inspection activity, hold point, and acceptance criterion is structured and ready to adapt to your project.
- AI-assisted customization — Tailor inspection activities and acceptance criteria to your specific project scope.
- Linked method statement — This ITP is connected to the corresponding method statement describing the work sequence.
- Multiple export formats — Download as a formatted PDF or editable Excel spreadsheet.
- Editable starting point, not a final document — Review and verify all content against your project specifications and standards before use.
What you can customize
When you save this ITP to your account, every inspection row becomes editable. You can add, remove, or modify:
- Inspection activity — Description of what is being inspected.
- Inspection type — Hold point (H), Witness point (W), Review (R), or Monitor (M).
- Responsibility — Contractor, subcontractor, engineer, or client.
- Frequency — How often the inspection occurs.
- Acceptance criteria — Referenced standard or specification requirement.
- Records — Forms, test reports, or checklists required as evidence.
Why this ITP is used
To ensure GI ductwork is fabricated and installed to the specified standards, delivering airtightness, fire safety, and durability.
Who uses this inspection and test plan
QA/QC engineers, site engineers, supervisors, consultants, and third-party testers.
When this ITP is prepared and submitted
From material receipt through shop fabrication, installation, testing, and final acceptance.
Who receives or approves this ITP
Consultant/Engineer for review and approval before start of works.
Inspection scope
Covers materials, fabrication dimensions, anchors, supports, flange/gasket assembly, acoustic lining, fire dampers, sealing quality, alignment, and leakage testing.
Typical hold, witness, and review points
Hold: anchors and dampers. Witness: liner installation and duct leakage test. Final: walkdown and documentation review.
Typical inspection records
MIRs, WIRs, torque logs, anchor proof-load reports, liner and damper checklists, leakage test reports, calibration certificates, as-built drawings, NCRs.
Important approval note
This ITP is an AI-assisted editable starting point, not a pre-approved document. Before use on any project, all inspection activities, hold points, and acceptance criteria must be reviewed and approved by the relevant parties (superintendent, principal contractor, or client representative) in accordance with your contract and project quality plan.
Always verify acceptance criteria against your applicable drawings, specifications, and regulatory requirements. Hold points must be confirmed with the relevant authority before work proceeds past that point.
Inspection and test plan
| Activity | Inspection / Test | Acceptance Criteria | Responsibility | Record |
|---|---|---|---|---|
| Material receipt (GI sheets, gaskets, sealants, anchors, dampers, liner) | Verify approvals, labels, UL/ASTM markings, certificates | Conforms to approved submittals and standards; no damage; shelf life valid | QA/QC Engineer | MIR, delivery notes, COC/COA |
| Shop fabrication dimensions and seams | Dimensional check, seam type per drawings | Within ±3 mm; seam types per SMACNA/DW/144; edges deburred | Duct Fabrication Supervisor / QA | Shop QA sheet |
| Anchor installation and proof-load | Hole cleaning, embedment, torque; proof-load ≥10% at 1.25× service load [Verify] | No rotation/pullout; torque within OEM; proof-load holds 1 min without slip | QA/QC + Third Party (if specified) | WIR, anchor test report, torque log |
| Hanger/trapeze spacing and plumb | Measure spacing/plumb/deflection | Spacing per SMACNA/DW/144 [Verify]; plumb ≤2°; deflection ≤L/360 | QA/QC | Inspection checklist |
| Gasket application at flanges | Visual continuity and seating | Continuous gasket; correct width/thickness; butt joints at corners sealed | QA/QC | Checklist/photos |
| Bolt torque verification | Torque check using calibrated wrench | Within OEM torque band (e.g., M8: 12–16 N·m) [Verify] | QA/QC | Torque log |
| Acoustic liner installation (if site-applied) | Adhesion coverage; pin spacing and pull test | 90–100% adhesive coverage; pins ≤300 mm c/c, ≥50 mm from edges; no delamination | QA/QC | Liner report |
| Fire damper installation and functional check | Verify listing-compliant install; close/open test for motorized | Correct orientation/sleeve/retainers; free movement; actuator/fuse rating correct; access provided; firestop per listed system | QA/QC + OEM Rep (as required) | Damper checklist, functional test form |
| Seam/joint sealing quality | Visual continuity and adhesion | Continuous, void-free sealing; UL 181 materials where required; Seal Class per spec | QA/QC | QC checklist |
| Duct alignment and clearances | Measurement | Level/line within tolerance; access door clearances; flange mismatch ≤2 mm | Site Engineer / QA/QC | Inspection record, redlines |
| Duct leakage test | SMACNA/DW/144 leakage test at specified pressure | Leakage ≤ specified class limit; stable for ≥15 min [Verify] | QA/QC / Testing team | Leakage test report, gauge calibration |
| Final acceptance | Walkdown and document review | All inspections/tests closed; documents approved; no open NCRs | Consultant / QA/QC | Final acceptance certificate |
This table is a read-only public reference. Download the PDF or Excel version, or customize this ITP to edit it for your project.
Frequently asked questions
Related method statement
This Inspection and Test Plan is associated with the Method Statement: Fabrication and Installation of Rectangular Galvanized Iron (GI) Ductwork method statement, which describes the step-by-step construction sequence, resources, materials, equipment, safety controls, and environmental controls for this activity.
View the Method Statement: Fabrication and Installation of Rectangular Galvanized Iron (GI) Ductwork method statement →