Roof greening soil runoff experiment video now available! Roof greening resilient to disasters (heavy rain).

basic information

This is a method of evergreen giraffe grass planting bags using zipper-type planting bags (FTM bags). It is a triple intellectual property product consisting of a bag method (Patent No. 4911418 + Registered Trademark No. 6125712) and variety registration (Variety Registration No. 15866). The triple intellectual property of the evergreen giraffe grass bag method (patent, trademark, and variety registration) leads to successful rooftop greening. 1. Prevents the intrusion of weeds. 2. Prevents soil runoff. 3. Easy installation with a zipper. The standard size of the bag method is 50 cm square, with a wet weight of 13 kg per piece. There is also a rectangular type measuring 15 cm x 100 cm. Grommet options and custom sizes are available. The rectangular type is used for wall greening and folded plate roof greening. The bag material is made of root-proof sheet, which stops the intrusion of weeds and prevents soil scattering and runoff. The bag allows the evergreen giraffe grass to provide moisture to the soil while preventing soil drying. The site receives bags filled with soil and seedlings of evergreen giraffe grass, so you simply open the zipper of the bag, insert the seedlings, and close the zipper. It is a simple greening system that completes greening just by arranging the bags with plants.

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Applications/Examples of results

【Evergreen Giraffe Grass Bag Method Achievements】 - Over 500 private facilities - Over 50 public facilities - Numerous others 【Greening Applications】 - Rooftop greening, folded plate roof greening, wall greening, slope greening, erosion control dam greening, road greening, concrete slope greening, environmental greening, weed control under solar panels, etc. 【Applications】 - Government and public agency facilities, public buildings - Factories, offices, commercial facilities - Apartments, residential homes - Civil engineering structures, erosion control dams, slopes - Ground cover - Weed control

Detailed information

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  Causes of Rooftop Greening Failures: Abnormal Weather In Japan, there have been many occurrences of damage from typhoons, heavy rains, floods, and landslides in various regions. Additionally, in recent years, there have been widespread heatwaves. In the first place, Japan's temperatures have been rising year by year, with particularly abnormal high temperatures observed during the summer and autumn. Moreover, not only the rise in temperature but also extreme cold in winter has been seen as one of the abnormal weather patterns in recent years. Amidst the increase in such weather, various problems have arisen in rooftop greening as well. For more details on the causes of rooftop greening system failures, please visit https://kirinsou.jp/reason/. For information on the evergreen Kirinsou bag method that overcomes the causes and issues of rooftop greening failures, please visit https://kirinsou.jp/system/.

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  Soil Dispersal Experiment One of the reasons for the failure of rooftop greening is "soil dispersal." We conducted a dispersal experiment comparing the rooftop greening system "bag method vs. conventional method" by creating strong winds using a blower and a circulator. Recently, it is predicted that there is an increasing trend in the occurrence of very strong tropical cyclones with maximum wind speeds exceeding 45 m/s due to abnormal weather. In such severe weather, the soil and plants from rooftop greening can be dispersed, causing problems such as clogging drainage systems. For a video comparing soil runoff experiments, please visit https://kirinsou.jp/system/#experiment2.

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  Rooftop Greening Revolution: A Rooftop Greening System That Won't Fail - "Evergreen Kirinsou Bag Method" Case Study: Roof Greening This is roof greening using the "Evergreen Kirinsou Bag Method," a rooftop greening system that won't fail. Since it is on the roof surface, it is secured with anti-dispersion nets. The Asakusa Culture and Tourism Center is a tourist information facility located in Taito Ward, in front of the Kaminarimon Gate. The first floor features an information counter that supports Japanese, English, Korean, and Chinese, as well as a foreign currency exchange service, while the second floor has a tourist information corner. The top floor, the 8th floor, is a free observation terrace. Due to the aging of the existing building, which is over 50 years old, a competition was held in 2008, and the proposal by Kengo Kuma was adopted. The initial plan had a height of 41.25 meters, but voices of opposition arose from Senso-ji Temple and the local shopping district, claiming it would disrupt the harmony of the streetscape, leading to a reduction of about 2 meters, resulting in a height of 38.9 meters. In 2012, it received the Good Design Award. For more details on the Rooftop Greening Revolution and the "Evergreen Kirinsou Bag Method" that won't fail, please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Failsafe Rooftop Greening System "Evergreen Kirinsou Bag Method" Case Study: Rooftop Greening (Accommodating Curves) This is a rooftop greening project of approximately 180 square meters using the failsafe rooftop greening system "Evergreen Kirinsou Bag Method." The greening area is divided into buildings A to D, and the shapes are not rectangular, with curved sections throughout the rooftop greening. Conventional tray-style greening cannot accommodate this. The Evergreen Kirinsou Bag Method also adapts to 50cm square, 25cm square, and 15cm x 50cm rectangular sizes. Since the bags are flexible, they can be shaped on-site, allowing for customization to fit the rooftop. The flexibility of the bags also enables greening on curved surfaces. For more details on the Rooftop Greening Revolution and the failsafe rooftop greening system "Evergreen Kirinsou Bag Method," please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kiri Grass Bag Method" Case Study: Rooftop Greening (Rooftop Greening by Middle School Students) The students themselves carried materials up to the rooftop, planted them in bags, and arranged the bags to complete the rooftop greening. The photo below was taken as a graduation memory. The school's science club took the lead in this rooftop greening project. The science club measured the temperatures of classrooms that were not greened and the classroom directly below the rooftop greening, using thermography to investigate the temperature distribution in the classrooms. In the classroom directly below the rooftop greening, the overall temperature was shown in blue, confirming the effects of the rooftop greening. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method," please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kiri Grass Bag Method" Case Study: Rooftop Greening (Greening by Children, Rooftop Greening by Middle School Students) To combat the summer heat at the community center, we implemented the Evergreen Kiri Grass Bag Method. The community center is a prefabricated building, making it quite hot in the summer as the air conditioning does not work effectively. The greening was done by the children of the neighborhood. Name tags are provided for the evergreen kiri grass bags, allowing participants to write their names. By participating in greening activities, the children's feelings towards community development improve, and a sense of attachment to the plaza also develops. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method," please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kiri Grass Bag Method" Construction Case: Slope Greening A sediment control dam, also known as a "sediment dam," is a type of dam installed in rivers. It is designed to catch harmful sediment flowing downstream from upstream sources, such as debris flows, and gradually release the accumulated sediment to regulate the amount flowing downstream. By trapping sediment in the sediment control dam, the slope of the river becomes gentler, preventing the riverbed and banks from being eroded, while also reducing the destructive power of debris flows. Additionally, it helps stabilize the foothills on both sides, preventing landslides on the mountain slopes. However, the construction of large concrete walls in mountainous areas can lead to landscape issues. Until now, greening sediment control dams has been difficult, and maintaining that greening has also been challenging. The Evergreen Kiri Grass Bag Method has made it possible to easily green these areas. The greening of sediment control dams blends well with the surrounding scenery. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method," please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kiri Grass Bag Method" Construction Example: Slope Greening Using the Evergreen Kiri Grass Bag Method, we implemented greening with letters as a landmark for the interchange. Evergreen Kiri Grass is resilient to heat, cold, and drought, making it a low-maintenance plant. It replaces new shoots around November, ensuring that it does not grow wildly and change the shape of the letters. The bag method is made from weed control sheets, effectively preventing weed intrusion and soil erosion. With this combination of low-maintenance plants and the bag method, it is possible to create such lettering through the greening system. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method," please visit https://kirinsou.jp.