4.4.1 root puncture-resistant waterproof layer can be used rigid waterproof, flexible waterproof or waterproof coating material in three different methods should be two channels or two tracks or more waterproof layer fortification, green roofs Ankang Hospital, the most on the road waterproof layer must be puncture-resistant waterproof material. Material waterproof layer should be compatible, generally reasonable service life not less than 15 years. 4.4.2 row (reservoir) water layer under roof gutters case design, material choice convex desktop, modular, modular and other forms of discharge (reservoir) water board, or diameter greater than 0.4-1.6cm of ceramic, The thickness of 5cm. 4.4.3 Isolation filter layer can generally use both permeable polyester fiber nonwoven fabric filter material, came under the matrix layer (reservoir) above the water level, the effective width of lapped seam should reach 10-20cm, and Building side wall extending to the substrate surface of 5cm below. 4.4.4 stroma trees green roof is designed to ensure the proper conduct of the substrate thickness can shape earthwork, earthwork pile height necessary position in load-bearing beams and capitals. Planting matrix should use special matrix, Ankang municipal green roofs, Medium Properties Reference Table 3, different green plants stromal thickness reference values ??in Table 4.4.4.5 planted green roof layer according to site conditions, its soil planting layer must have bulk density of small, light-weight, loose, breathable, water and fertilizer, suitable for plant growth and environmental protection, clean performance. Usually the soil is difficult to meet these requirements, so green roofs generally use artificial soil formulated various types of media. Although in recent years the construction of a roof garden to get a certain amount of development, however, Qi green roof, lots of green roofs found a lot of problems after the completion of the course, which is embodied in the government and administrative departments concerned enough, technology promotion unfavorable , high costs and outdated concepts. (1) regional development imbalance due to an imbalance of more than 600 cities, urban infrastructure and geographical differences in economic development, there is a big difference. Green roofs stage mainly in big cities and economically developed areas to carry, Ankang school green roofs, even the same city, the new city and the old town can be green roof conditions there is a big gap. Many cities in greening or blank. (2) The Government is not enough attention to the main directions of the government is currently working on urban greening limited ground greening, some cities in the absence of available land is transferred to the old green parkland transformation, the role of the green roof can not be understanding of the difficulty of green roofs consider too much, and therefore less investment in research, experiment, technology promotion, lack of special management of construction enterprises. In the current social management, the government's guidance and promote tend to have less effective, the development status of Chengdu green roof fully illustrates this reality. Qi source of green roofs _ Landscape Design Concept Shaanxi Ankang municipal green roof _ provided by the Shaanxi View source landscape Engineering Limited. Qi source of green roofs _ Landscape Design Concept Shaanxi Ankang municipal green roof _ Shaanxi View source landscape Engineering Co., Ltd. (www.gyu-la.com) this year introduced a new upgrade, the above picture is for reference only, please call this page or Tel picture on to obtain the latest information, Contact: Zhang.