Never Miss a Unit or Area Calculation Error

Issue count: ~70 issues per 100 drawing sheets — our real average across 2,800+ completed projects.

Severity split: 14% Critical / 53% High / 33% Medium — from 58,000+ real issues exported from our production database.

Savings model: We estimate what fraction of issues at each severity would have caused a costly downstream problem (RFI, change order, rework) if not caught during design review. We use conservative "escape rates" — 40% for Critical, 20% for High, 10% for Medium — well below industry rework benchmarks (CII: 5–10% of project value).

Cost per escaped issue: Critical $10K–$50K (scales with project value — rework on a $50M project costs more than on a $1M project), High $2K–$8K (RFI + delay), Medium $1.5K (minor rework). Based on CII, FMI, and Navigant construction industry research.