Garden Roof Drain Connection Detail with Green Roof Layer Section

The garden roof drainage CAD detail also includes the vertical drainage pipe connected to the roof outlet, which carries rainwater from the roof surface to the building drainage network. Structural components such as the reinforced concrete roof slab, insulation layers, waterproof membranes, and protective drainage layers are illustrated to explain the complete roof construction system. Additional filtration layers prevent soil and plant materials from entering the drainage outlet while maintaining proper water flow.