Airflow Case: 30 Illustrated Ductwork Cases for HVAC & Sheet

A duct can fit on plan and still collide in the ceiling. An outlet can meet its airflow target while the room still feels wrong. Airflow Case Files gives HVAC and sheet metal apprentices structured, jobsite-style practice connecting drawings, measurements, field conditions, and the next authorized action. Work through 30 illustrated ductwork cases covering missing return paths, conflicting plan and section views, revision control, fitting clearances, branch totals, leakage, damper position, air distribution, access, coordination, and turnover documentation. Every case uses a repeatable five-step process: - Observe the system and identify what is known - Verify dimensions, revisions, test conditions, and acceptance criteria - Calculate airflow, pressure differences, clearances, and totals - Interpret the evidence without guessing - Document the next authori