This document contains a mechanical engineering drawing of an HVAC system layout with labeled ductwork, piping, equipment, and components. Key elements include smoke exhaust ducts and grilles, air handling units, chilled water supply and return piping, domestic cold water, fire piping, and drainage systems. Schematics are provided showing plan views, sections, and axonometric diagrams of the coordinated modular design with ductwork, piping, and equipment orientations. Dimensions, flow rates, and other technical specifications are included.