In Short - QA (Quality Assurance)  represents and reports to the Owner. QC (Quality Control)  represents and reports to the General Contractor. QC - QC builds quality into the project. Checks their own (GC's) work to ensure compliance with contract documents. They provide third party testing where required by specifications. QC does daily inspections for the contractor to ensure work and products comply with contract document requirements. QC manages the submittal log and tr

Q:  Our isometrics show 1/2" DCW/DHW distribution lines. Government QA issued a CDR for deficient pipe size per the specifications—how can that be wrong if the drawings show 1/2"? A:  Because on federal work, drawings don’t “win” a conflict. The contract does. If the Division 22 specification  requires a different size than what an isometric depicts, the specification governs . That’s the point of FAR 52.236-21 (Specifications and Drawings for Construction) : when documents d