Quality Control
Material Verification Before Installation
Verify materials match approved submittals before installation begins.
8 min James O'Brien Reviewed by Maria Delgado, Technical Reviewer, PE v1.3 · reviewed 2026-08-01
The Problem
Wrong or unapproved materials installed on site are discovered at inspection, requiring costly demolition and reinstall.
Root Causes
- Materials received without cross-check to approved submittals
- Substitutions accepted without engineer approval
- Damaged goods installed rather than rejected
Correct Procedure
- 1Compare packing list to approved submittal package before opening pallets
- 2Match model, size, voltage/spec and finish against the RFI/submittal number
- 3Photograph packing lists and part numbers, save to project folder
- 4Inspect for shipping damage — reject any compromised items
- 5Confirm long-lead items have no field substitutions
Prevention Steps
- Keep a printed submittal binder on site with tab dividers per trade
- Foreman signs the packing list only after physical verification
- Flag substitutions on the RFI log the same day
Discussion Questions
Use these to engage the crew and connect the lesson to today's site conditions.
- 1How can we verify materials on site before opening pallets?
- 2What are common red flags to watch for on delivery day?
- 3What should you do if delivered materials don't match the submittal?
Knowledge Check
Who signs off that received materials match the submittal?
The foreman or designated crew lead, after physical verification.
What happens if a substituted item shows up?
Do not install it. Flag it on the RFI log and get engineer/architect approval first.
Sources & Review
Author: James O'Brien (25+ yrs) · Reviewed by Maria Delgado, Technical Reviewer, PE.
Published 2024-06-15 · Last technical review 2026-08-01 · Version 1.3 · Languages: EN, ES
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