Lightweight green roof plans refer to the design and layout of green roofs that are designed to be lightweight. These roofs use materials that are less heavy than traditional roofing materials, which helps to reduce the structural load on the building. The design of such roofs typically involves selecting appropriate plants that can thrive in the limited soil depth and with less water, as well as ensuring proper drainage and irrigation systems. Green roofs can provide numerous environmental and economic benefits, including improved air quality, reduced energy consumption, and enhanced urban biodiversity.