Inspect precast façade panel installation for plumbness and bearing

The checklist

Pre-Installation Controls

1. 1Verify latest approved shop drawings and erection sequence are on site; confirm stated tolerances for plumbness and bearing per approved project specifications and authority requirements; record document numbers and initials.
2. 2Inspect supports (inserts, corbels, brackets, welded plates) for location, cleanliness, and damage; acceptance: free of laitance, deformation, and heavy corrosion; capture close-up photos and mark-up any defects.
3. 3Confirm survey control and façade datums transferred to elevation; tool: total station; acceptance: horizontal/vertical closure ≤5 mm over the elevation; upload the survey report and station setup sketch.
4. 4Check lifting gear and slings against panel mass; acceptance: WLL ≥ panel mass × safety factor as per lift plan; photograph tags and record WLL and certification expiry.
5. 5Verify access platforms/MEWPs/scaffolds have current inspection tags; acceptance: green tag within validity; attach photos of tags and working area housekeeping.

Panel Setting and Temporary Support

1. 6Place approved bearing pads to layout; tool: caliper/feeler gauge; acceptance: thickness 10–25 mm, full contact with seat; record pad batch/lot and photos with scale.
2. 7Dry-set panel onto pads and shims maintaining joint gaps; acceptance: joint width per drawings ±3 mm; capture tape-measure photos at top, mid, bottom.
3. 8Install adjustable braces to slab/structure; tools: torque wrench, inclinometer; acceptance: brace angle 45–60°, bolts torqued per data sheet; record torque values and brace IDs.
4. 9Confirm panel ID matches drawings and intended location; acceptance: correct mark and orientation; take a photo of the panel mark and elevation reference.
5. 10Verify shim stacks (steel/neoprene) are seated flat, dry, and aligned; acceptance: contact area ≥80% and stack height per drawings; photograph stacks with ruler for scale.

Plumbness Verification

1. 11Confirm instrument calibration: digital level/inclinometer/total station with current certificate; acceptance: certificate in date; upload photo of certificate and instrument ID.
2. 12Measure out-of-plumb in both primary axes at multiple heights; acceptance: ≤6 mm in 3 m and ≤12 mm overall, or per approved project specifications; log readings by elevation.
3. 13Check face alignment to control line or laser plane; acceptance: deviation ≤5 mm from reference; capture laser target photos and note offsets.
4. 14Verify top and bottom centerline offsets to grid; tool: total station/steel tape; acceptance: ±5 mm to grid; upload point list and annotated photo of prism positions.
5. 15Adjust braces/shims to achieve tolerance, remeasure, and lock bracing; acceptance: final readings within specified limits; record before/after readings and brace lockout photo.

Bearing and Support Verification

1. 16Measure effective bearing length on each seat; tools: mirror, gauge; acceptance: continuous bearing ≥50 mm or per drawings; provide scaled photos at each support.
2. 17Check anchor bolts/threads engagement and nuts/washers installation; tools: thread gauge, torque wrench; acceptance: engagement ≥1.5× bolt diameter, torque per data sheet; record values and hardware batch.
3. 18Inspect weld plates and temporary tack welds if used; acceptance: correct weld size/length, free from cracks/undercut; upload weld map, welder ID, and clear photos.
4. 19Confirm bearing grout fully fills under seat; tools: probe, inspection ports; acceptance: voids ≤5% and strength per mix design; attach grout batch tickets and cube reports.
5. 20Verify sealants or firestops do not intrude into bearing line; acceptance: bearing surfaces unobstructed; take close-up photos before final closure.

Finalization and Handover

1. 21Remove lifting gear and recheck plumbness after stabilization (≥1 h); acceptance: change ≤2 mm; upload time-stamped before/after measurements.
2. 22Compile inspection photos with scales, measurement logs, pad/bolt/grout batches; acceptance: all mandatory fields completed; export draft PDF for review.
3. 23Obtain electronic sign-offs from erector, precast supplier, and consultant; acceptance: all signatures captured with dates; attach approval note or NCR closure if applicable.
4. 24Affix QR code tag linking to the inspection record; acceptance: successful scan from 1 m distance; upload scan screenshot and panel location photo.

Preview the printable checklist

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

At a glance

• Systematic verification of vertical alignment using calibrated instruments ensures façade panels remain within project tolerances, minimizing cumulative drift and preventing cladding stress, glazing misalignment, and downstream rework. Records include readings by height, device ID, and operator initials.
• Focused bearing inspection validates pad type, shim stack contact, seat cleanliness, and effective bearing length. Proper load transfer improves durability, limits cracking at corners and fixings, and supports reliable load paths back to the structure.
• Documentation-first workflow captures photos with scales, batch and lot numbers for pads and grout, torque values, and weld identifiers. This provides robust traceability that simplifies consultant reviews and closes nonconformities faster.
• Interactive online checklist with tick, comment, and export features secured by QR code. Field teams collaborate in real-time, attach measurements and sketches, then export compliant inspection packs to PDF or Excel for archiving and submittal.

How to use this interactive plumbness and bearing checklist

1. Preparation: Gather approved drawings, erection plan, calibration certificates, and lift plan. Equip a total station or digital level/inclinometer, torque wrench, calipers, feeler gauges, ruler, camera, PPE, and safe access (MEWP/scaffold). Confirm survey control and safe working area.
2. Open the checklist: Start a new panel record, select elevation and grid, and scan or enter panel ID. Preload tolerances from the project specification or use defaults as instructed by the quality manager.
3. Measure and capture: Record plumb readings by axis and height, bearing lengths at each support, brace torques, and joint gaps. Add photos with scales and attach batch tickets for pads and grout.
4. Comment and collaborate: Use the comment field to flag variances, propose corrective actions, and tag responsible parties. Link to relevant detail numbers and add timestamps for each note.
5. Resolve and recheck: After adjustments to braces or shims, remeasure and update readings. Mark items as compliant when within tolerance, or raise an NCR with evidence if not.
6. Export: Generate a commentable, time-stamped PDF/Excel pack including photos, measurements, and signatures. Ensure the QR code is embedded for on-site verification and quick retrieval.
7. Sign-off and archive: Capture digital signatures from the erector, precast supplier, and consultant. Distribute to stakeholders, then archive by building zone, elevation, and grid for audit readiness.

Plumbness methods that deliver repeatable, defensible results

Achieving true verticality starts with calibrated instruments and consistent measurement routines. A total station offers high accuracy for mapping offsets to grid, while a digital level or inclinometer provides quick out-of-plumb checks at multiple heights. Establish stable instrument setups, sight to verified control points, and record readings at the panel’s left and right edges to detect twist. Always measure in both orthogonal façades to prevent hidden bias from uneven shimming. If deviations exceed tolerance, adjust braces incrementally, remeasure, and lock the settings. Document the instrument ID, certificate validity, operator initials, and time stamps for traceability. On congested elevations, reflective targets or plumb lasers speed alignment while minimizing access risks. Frequent short checks during settling limit rework after the crane releases. Acceptance should follow the drawings and approved project specifications, with clear notes where site conditions require an agreed deviation and corrective action.

• Measure both axes at several heights per panel.
• Log instrument ID, calibration date, and operator.
• Adjust in small increments and remeasure immediately.
• Use targets or lasers to reduce access risks.
• Capture photos with scales near readings.

Bearing integrity: pads, shims, and seats working together

Reliable load transfer depends on clean seats, correct pad type, and well-aligned shim stacks. Bearing pads should fully contact both the concrete seat and the panel, with thickness and hardness matching submittals. Shim stacks need broad, flat contact to prevent point loading and should be positioned per the shop drawings to avoid eccentricity. Measure effective bearing length and confirm grout placement, especially under corbels or ledges where voids can form. Check bolts, welds, and plates for correct size and engagement; torque or weld parameters should match the manufacturer data and approved project specifications. Do not allow sealants or firestops to intrude into the bearing line, as they can compromise seating. Photograph each support with a ruler, record pad and grout batch numbers, and note anchor IDs. Clear, repeatable evidence enables quick sign-off and avoids costly rework after façade closure.

• Seats clean, dry, and free of laitance.
• Pads and shims with ≥80% contact area.
• Measure and photograph bearing length.
• Record pad and grout batch numbers.
• Prevent sealants from fouling the seat.

Controlling risk with documentation and timely rechecks

Even small misalignments can escalate across multiple panels, so meticulous documentation and timely rechecks are essential. Capture measurements by height and axis, with before/after values when adjustments are made. Include photos with measurement scales, instrument setups, and brace lockouts. After removing lifting gear, allow short stabilization time and recheck plumbness; creep or shim settlement often reveals millimetre changes that are simple to correct early. Consolidate all evidence—survey reports, torque values, weld maps, and material batches—into a single inspection record. Use comments to explain site constraints or agreed variances, and ensure each action references the relevant drawing detail. Export the final pack for review and archive it under the elevation and grid reference. This practice reduces disputes, accelerates approvals, and supports compliance with approved project specifications and authority requirements.

• Recheck after crane release and stabilization.
• Capture before/after values for adjustments.
• Use comments to explain variances.
• Export and archive by elevation and grid.