Scribd
Upload
10 views2 pages

Comments PP04

The document outlines common deficiencies identified in various issue clusters related to design validation, QA/QC oversight, material compliance, and execution versus design gaps. It recommends enhancements to the PP04 protocol, including mandatory design verification checklists, integrated QA/QC witness planning, and improved material approval traceability. Additionally, it suggests new appendices to support these enhancements, such as a QA/QC witness matrix and a utility coordination form.

Uploaded by

nhschandana22
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
10 views2 pages

Comments PP04

The document outlines common deficiencies identified in various issue clusters related to design validation, QA/QC oversight, material compliance, and execution versus design gaps. It recommends enhancements to the PP04 protocol, including mandatory design verification checklists, integrated QA/QC witness planning, and improved material approval traceability. Additionally, it suggests new appendices to support these enhancements, such as a QA/QC witness matrix and a utility coordination form.

Uploaded by

nhschandana22
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 2

🔍 Root Cause Themes from QN & GO Registers

Issue Cluster Common Deficiencies


Incomplete or unapproved shop drawings, missing design
Design Validation
coordination, outdated specs
Work done without JAEQR witness, missing ROFs, poor
QA/QC Oversight
documentation traceability
Use of unapproved materials, missing QA/QC certificates, vendor
Material Compliance
nonconformance
Execution vs Design Field work deviating from design intent (e.g. pipe gradients,
Gap waterproofing layers)
Concrete &
Cold joints, inadequate curing, free fall violations, membrane damage
Waterproofing
Subgrade erosion, improper backfilling, drainage issues, kerb
Roadworks & Utilities
misalignments

Recommended Enhancements to PP04


1. Pre-Execution Design Verification Protocol

 Add a mandatory Design Verification Checklist before any site execution.


 Include cross-checks for:
o Finalized AFC drawings
o Approved Method Statements
o Utility/service clash detection
o Waterproofing and drainage integration

2. Integrated QA/QC Witness Planning

 Embed a ROF Scheduling Matrix into the Design Schedule (Appendix E).
 Link ROF triggers to design milestones (e.g. formwork, waterproofing, pipe bedding).
 Require ROF reference in CDS Part B before submission to Employer.

3. Material Approval Traceability

 Expand CDS Part A to include:


o Material submittal reference numbers
o QA/QC approval status
o Vendor qualification status
 Link to EDMS for real-time verification.
4. Design-to-Execution Feedback Loop

 Introduce a Post-Execution Design Review Form for lessons learned.


 Capture deviations, corrective actions, and update design guidelines accordingly.
 Feed into future design submissions via CDS Part D.

5. Waterproofing & Concrete Quality Controls

 Add a Waterproofing Integration Sheet to the Design Registry (Appendix G).


 Include:
o Termination details
o Protection board layering
o Manufacturer’s recommendations
 For concrete:
o Embed Free Fall Height & Curing Protocols into CDS review checklist.

6. Utility Coordination Protocol

 Mandate a Utility Coordination Form before any trenching or duct laying.


 Include:
o Clearance verification
o Jointing method
o Backfilling compaction test plan

📊 Suggested Additions to PP04 Appendices


Appendix Addition
G QA/QC Witness Matrix with ROF triggers
H Utility Coordination Form
I Post-Execution Design Review Template
New Waterproofing Integration Sheet
New Material Approval Traceability Log

You might also like