Top 10 QA/QC Civil Engineer – Interview Revision Notes (Saudi Arabia) 1. Difference Between QA & QC Quality Assurance (QA) Process-focused : ensures the system  prevents defects. Activities: Preparing ITPs, procedures, checklists, method statements, audit planning. Goal: Do the work correctly the first time. Quality Control (QC) Product-focused : checks the actual work  and identifies defects. Activities: Inspecting rebar, formwork, concrete, blockwork, compaction, asphalt. G