Mechanical HVAC Duct Layout Drawing with Detailed Dimensions

This CAD drawing presents a comprehensive mechanical HVAC duct layout plan prepared for professional building services coordination. The drawing clearly illustrates supply air SA return air RA exhaust air EA and outside air OA duct routing with precise rectangular duct sizes such as 600x400, 1000x300, 1300x400, and 1500x600 mm. It includes mechanical equipment connections, fan units, dampers, smoke control components, and airflow direction symbols arranged over a coordinated grid layout. The plan shows roof-level mechanical zoning, structural grid references, shaft connections, and equipment placement with clear annotations and legends for easy execution. This detailed HVAC services drawing supports accurate installation coordination, clash-free planning, and technical understanding for architects, civil engineers, MEP consultants, and construction teams working on complex building projects.