Inspect retaining wall footing reinforcement (horizontal) is a field checklist for site engineers to verify bar sizes, spacing, cover, lap splices, and dowels before placement activities, excluding any concrete testing or concreting operations.
- Confirm bar diameters, spacing, and cover match approved drawings and schedules.
- Reduce rework by catching misaligned laps, missing chairs, or wrong dowels early.
- Use calibrated tools to measure, photograph, and document acceptance evidence.
- Interactive, commentable checklist with export and QR code traceability.
The checklist
Documentation & Identification
- Confirm latest approved drawings, bar schedule, and inspection test plan are on hand; verify revision/date. Evidence: photo of title blocks; acceptance: documents match site scope per approved project specifications and authority requirements.
- Match bar marks and quantities to the schedule and bundle tags at location. Method: cross-check mark numbers; evidence: photos of tags; acceptance: marks and counts align with drawings.
- Record mill certificate/heat numbers where traceability is required. Method: note on checklist and photograph labels; acceptance: traceability recorded per project requirements.
- Verify reinforcement is free of flaky rust, oil, mud, or paint at bond zones. Method: visual; evidence: close-up photos; acceptance: surface condition suitable per approved project specifications.
Bar Sizes & Spacing (Horizontal)
- Measure bar diameters with a rebar gauge or vernier calipers. Evidence: photo showing reading in mm; acceptance: nominal size matches schedule (tolerance per project specifications).
- Confirm bar grade/type via markings or paint code legend. Method: compare to schedule; evidence: photo of markings; acceptance: grade/type as specified.
- Verify spacing along the footing using a steel tape and chalk lines. Evidence: photos with tape; acceptance: spacing equals drawing requirement within specified tolerance.
- Count bars in each layer (bottom/top mats if applicable) and confirm extents match plan. Evidence: marked photo; acceptance: quantities and extents per drawings.
Cover & Supports
- Check spacer/cover block thickness equals specified cover (e.g., stamped 50 mm). Evidence: photo of stamp and placement; acceptance: correct thickness and approved material.
- Verify chair/spacer spacing and type (plastic/FRP/concrete) suit bar size and load. Method: measure spacing in mm; acceptance: layout per manufacturer and project specifications.
- Measure edge and soffit cover from formwork to nearest bar using a ruler/cover meter. Evidence: photos; acceptance: cover meets drawings within specified tolerance.
- Ensure bars are stable on chairs; attempt gentle movement by hand. Evidence: video/photo; acceptance: no significant displacement under light handling.
- Orient tie wire tails away from cover faces; trim flush to avoid encroaching cover. Evidence: close-up photos; acceptance: no tie ends within specified cover zone.
Laps & Anchorage
- Measure lap splice lengths with a tape and mark ends with paint. Evidence: photo with measurement in mm; acceptance: lap length ≥ specified for bar size/grade.
- Stagger lap splices per drawings; verify minimum clear spacing between lapped bars. Evidence: photos with tape; acceptance: staggering and spacing per specifications.
- Tie laps at minimum third points to prevent opening during handling. Evidence: photo of ties; acceptance: ties installed and secure per project requirements.
- Confirm development/anchorage where hooks or step/heel details exist. Method: measure hook/embed lengths; acceptance: dimensions per approved drawings.
Dowels to Stem Interface
- Verify dowel size, grade, and spacing at the footing centerline. Evidence: gauge/tape photos; acceptance: matches schedule within specified tolerance.
- Measure dowel embedment into footing and projection height for stem connection. Evidence: tape photos; acceptance: embed/projection per drawings and specifications.
- Check dowel alignment using a plumb line/level and string line along wall axis. Evidence: photos; acceptance: verticality and location within specified tolerance.
- Install protective caps or sleeves where required until formwork/stem steel is placed. Evidence: photos; acceptance: all exposed dowels protected per safety/spec requirements.
Placement, Tying & Restraint
- Confirm bends and hooks match bending schedule; measure inside bend diameter. Evidence: photos; acceptance: geometry per approved project specifications.
- Verify couplers/continuity bars at planned joints, if specified; note IDs/torque marks. Evidence: photo of coupler and tag; acceptance: installation per manufacturer/specs.
- Install temporary restraints to prevent bar shift during formwork adjustments and access. Evidence: photos; acceptance: reinforcement remains in documented position.
- Clear debris, loose wire, and offcuts from the mat to maintain spacing and cover. Evidence: photo before/after; acceptance: reinforcement unobstructed and clean.
- Final sign-off: capture wide-angle photos, measurement close-ups, and obtain inspector approval. Evidence: digital signatures and QR-linked report; acceptance: ready for next activity.
Preview the printable checklist
Preview page one below. Open the image or download the PDF for all pages.
At a glance
- Validate footing rebar against approved drawings and bar schedules, confirming bar diameters, spacing, cover, laps, and dowels. Catch errors early to avoid costly rework, schedule delays, and future durability issues such as corrosion or cracking from inadequate cover.
- Provide defensible evidence with calibrated measurements, photos, and material tags. Record bar gauges, lap tape readings, cover block thickness, dowel alignment checks, and approvals, ensuring traceability per approved project specifications and authority requirements.
- Interactive online checklist with tick, comment, and export features secured by QR code. Field teams capture findings in real time, supervisors resolve issues on the spot, and stakeholders receive authenticated PDF/Excel reports for records and audits.
- Improve constructability by verifying chair types and spacing, tie patterns, lap staggering, and dowel embedment before closing formwork. This reduces congestion, prevents bar movement during handling, and ensures the stem interface is in the correct location.
How to use this checklist in the field
- Preparation: bring drawings/schedules, rebar gauge or calipers, steel tape, marker, plumb line/level, cover meter or ruler, camera, PPE (gloves, eye protection, boots), and QR-enabled device.
- Open the interactive checklist on your device, select project, location, and footing segment, and confirm the latest revisions are loaded.
- Work item-by-item: measure, photograph evidence, and tick completed checks. Add comments with dimensions, bar marks, and tag numbers for any nonconformance.
- Use the comment threads to assign actions to fabricators or foremen, attach markup photos, and set due dates for corrections.
- When resolved, retake measurements and photos, close comments, and re-tick items to show compliance per approved project specifications and authority requirements.
- Export the completed record to PDF/Excel, including embedded photos and measurements. The export includes a QR code for authentication.
- Sign-off: capture digital signatures from the inspector and contractor representative, distribute to stakeholders, and archive within the project record.
Get bar sizes, spacing, and laps correct the first time
Accurate horizontal reinforcement begins with confirming bar marks, diameters, grades, and spacing directly against the approved drawing and schedule. Use a rebar gauge or vernier calipers to verify nominal diameters, and photograph readings in millimetres next to bar marks for traceability. Lay out spacing with chalk lines and a steel tape; mark reference stations to catch cumulative errors along long footings. For lap splices, mark lap start and end with a paint marker, then record measured length with a tape. Stagger laps as shown to avoid congestion and weak planes. Where hooks or step/heel details appear, measure hook or embed lengths against the schedule. Keep all evidence in the checklist with comments for any deviation. Early detection of wrong bar size, incorrect spacing, or short laps prevents structural deficiencies and avoids cutting out steel after form closure. Always align field decisions with the approved project specifications and authority requirements.
- Gauge and photograph bar diameters in millimetres.
- Set spacing with chalk lines and a steel tape.
- Mark and measure lap lengths; record photos.
- Stagger laps to match drawing intent.
- Document deviations and approvals immediately.
Reliable cover and support: durability starts here
Adequate bar cover protects reinforcement from corrosion and ensures bond performance. Select approved spacers or chairs suited to bar size and exposure conditions, then verify their thickness equals the specified cover (often stamped, such as 50 mm). Place spacers at the correct centres and check that bars do not rock or shift under light handling. Measure soffit and edge cover from formwork to the nearest bar with a ruler or cover meter and photograph the readings. Orient tie wire tails away from cover faces to prevent encroachment, and use non-metallic spacers where faces will remain exposed to avoid staining. Keep the mat free of debris that might hold bars off the chairs. Target a consistent, repeatable layout rather than spot fixes. Acceptance should always be against the drawings, manufacturer data, and the approved project specifications and authority requirements.
- Use stamped spacers matching specified cover.
- Measure soffit and edge cover from formwork.
- Stabilize bars; prevent rocking or shift.
- Keep tie tails clear of cover faces.
- Avoid debris that alters bar position.
Dowel alignment and interface with the wall stem
Dowels link the footing to the retaining wall stem, so their size, alignment, embedment, and projection must be correct. Start by verifying dowel diameter and grade using a gauge and marking legend. Measure embedment into the footing and the projection above the top of reinforcement to ensure the stem steel will seat at the correct elevation. Use a plumb line or spirit level for verticality and string line for centerline alignment along the wall axis. Where hooks or couplers are specified, confirm orientation and identification. Install protective caps until the stem assembly begins to prevent hazards and bending. If dowels deviate, raise a comment with measured offsets and proposed correction for approval before proceeding. All checks are against the drawings and per approved project specifications and authority requirements.
- Gauge dowel size and confirm grade.
- Measure embedment and projection in millimetres.
- Check verticality with plumb/level tools.
- Align along centerline using a string line.
- Protect exposed dowels with caps.
