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Method Statement: Torch-Applied Bituminous Membrane Waterproofing for Basement Concrete Retaining Walls inspection and test plan example.

Inspection and Test Plan for Method Statement: Torch-Applied Bituminous Membrane Waterproofing for Basement Concrete Retaining Walls

AI-assisted inspection and test plan connected to a method statement, with PDF and Excel export.

Published 18 Jun 2026 Rev. 00 3 views
About this ITP: This ITP defines inspections and tests for basement wall torch-on waterproofing, including substrate acceptance, priming, membrane laps, holiday testing, and protection prior to backfill.

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 waterproofing works meet design intent and manufacturer requirements, achieving a durable watertight barrier before backfilling.

Who uses this inspection and test plan

Contractor QA/QC, waterproofing subcontractor, site engineer, HSE, and client/independent inspectors.

When this ITP is prepared and submitted

From pre-start approvals through installation, testing, protection, and final acceptance prior to backfilling.

Who receives or approves this ITP

Engineer/Client Representative

Inspection scope

100% visual checks for substrate, primer, seams, details; sample peel tests; and full-area high-voltage holiday detection prior to protection.

Typical hold, witness, and review points

HOLD: Pre-start approvals; substrate acceptance; holiday testing; protection/drainage boards; final acceptance. WITNESS: Primer application; detailing.

Typical inspection records

Substrate acceptance forms, primer logs, daily QA logs, peel test results, holiday test reports, calibration certificates, RFI/IR, photo records.

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
Pre-start approvals [HOLD] Verify approved materials, MS/TDS, PTW, calibrations All approvals current; equipment calibrated; permits in place. QA/QC Engineer ITP checklist, approvals register
Substrate acceptance [HOLD] Flatness (2 m straightedge), moisture (ASTM D4263 or meter), surface soundness Clean, sound, dry within limits; flatness ≤5 mm/2 m; repairs completed. QA/QC Engineer Substrate acceptance form, photos
Primer application [WITNESS] Coverage vs consumption; tack-free status Uniform film; consumption within target; tack-free before membrane. QA/QC Engineer Primer log, photos
Membrane installation – production Lap widths; seam probing; bleed-out observation; peel adhesion (ASTM D903 guidance) Side laps ≥100 mm; end laps ≥150 mm; 3–5 mm bleed; peel ≥0.5 N/mm or per TDS [Verify]. Subcontractor Supervisor / QA Daily QA log, peel test records, photos
Detailing at corners/penetrations/terminations [WITNESS] Check reinforcement strips, collars, sealant continuity, termination bars Continuous bond; correct laps; secure bars ≤200 mm c/c; sealant continuous. QA/QC Engineer Checklist, photos
Holiday (spark) testing – 100% area [HOLD] High-voltage holiday detection per ASTM D8231; voltage set per thickness (e.g., 6–10 kV for 4–5 mm) [Verify] Zero holidays after repair and retest; full traceable report. QA/QC Engineer / Independent Inspector (if required) Holiday test report, calibration cert
Installation of protection/drainage boards [HOLD] Overlap, fixings, continuity to drains/outlets, top edge termination Continuous, correct laps 100–150 mm; no puncture of membrane; outlets connected. QA/QC Engineer Inspection report, photos
Final acceptance prior to backfill [HOLD] Review all records; spot checks All ITP items closed; NCRs resolved; documentation complete. Engineer/Client Rep RFI/IR, handover 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

Use ASTM D8231 (high-voltage) or ASTM D7877 (low-voltage) methods; set test voltage appropriate to membrane thickness and manufacturer guidance.

Typically one per 200 m² or per shift minimum, unless the manufacturer or project specifications require otherwise.

Some projects require an independent inspector to witness hold points such as substrate acceptance and holiday testing. Verify per project specifications.

Related method statement

This Inspection and Test Plan is associated with the Method Statement: Torch-Applied Bituminous Membrane Waterproofing for Basement Concrete Retaining Walls 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: Torch-Applied Bituminous Membrane Waterproofing for Basement Concrete Retaining Walls method statement →

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