HVAC Ducting Sectional Views DWG for Mechanical Ventilation System

This AutoCAD DWG drawing provides detailed HVAC ducting sectional views (B-V1 to B-V9) prepared for a large-scale commercial and airport terminal building project. The drawing clearly illustrates supply air ducts, return air ducts, exhaust systems, smoke spill systems (fire mode), and kitchen exhaust systems, with color-coded legends for easy identification. Each sectional view shows duct sizes, elevations, risers, level references such as upper mezzanine level and departure level, and precise dimensional annotations to ensure accurate mechanical coordination. Existing ducts to be dismantled and removed, new reconnection positions, termination points, and reconnection to existing supply air ducts are clearly marked, supporting phased construction and retrofit planning. The layout demonstrates duct routing logic, clearance management, and coordination with structural and architectural elements