Ventilation Structure Detail Drawing with Dimensions for Roof

This structure detail drawing illustrates the installation of roof-mounted helical mushroom-type ventilation units prepared in AutoCAD DWG format. The drawing includes sectional details showing motor housing, fan blade, acoustic lining, airflow hood, and suction chamber arrangement with clear dimensional annotations. Construction layers such as roof slab, block masonry wall, waterproofing layer, and acoustic insulation are precisely indicated to ensure proper coordination between structural and mechanical elements.

The drawing also explains duct connections, vertical extraction duct sections, sealing between duct and wall, and airflow regulation components with accurate height and width measurements. Structure detail drawing content supports architects, civil engineers, and mechanical planners in understanding ventilation system placement, structural support, and installation methodology.