AR instruction steps
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1. Locate zone datum QR at L3 grid A-1
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2. Align overlay grid to slab edge
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3. Lay bottom mat bars N–S per overlay
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4. Verify 200 mm bar spacing against overlay grid
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5. Install chairs at marked points
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6. Lay top mat bars E–W
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7. Tie intersections at highlighted nodes
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8. Verify 40 mm cover at slab edge
Current step — live on 3 glasses
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9. Place additional bars at openings
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10. Photo-capture mat for QC
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11. Request QC checkpoint scan
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12. Clear zone for pour prep