Rooftop greening system soil dispersion experiment: tray method vs. evergreen carpet bag method.

basic information

This is the evergreen giraffe grass bag method® (FTM bag) utilizing a zipper-type planting bag. It is a triple intellectual property product (patent No. 4911418 + registered trademark No. 6125712) + variety registration (variety registration number No. 15866). The triple intellectual property of the evergreen giraffe grass bag method (patent, trademark, 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 × 100 cm. Additionally, grommets are available, and custom sizes can be ordered. The rectangular type is used for wall greening and folded plate roof greening. The bag is made of root-proof sheet material, which stops the intrusion of weeds and prevents soil scattering and runoff. The bag allows evergreen giraffe grass to provide moisture to the soil while preventing soil drying. The site will receive 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 the greening by just 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 facilities - Factories, offices, commercial facilities - Condominiums, residential buildings - 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 rain, 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 often seen in summer and autumn. Furthermore, not only the rise in temperature but also extreme cold in winter has been observed as one of the abnormal weather patterns in recent years. Amidst the increase in such weather phenomena, various problems have arisen in rooftop greening as well. For more details on the causes of failures in rooftop greening systems, 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 Erosion Experiment One of the reasons for the failure of rooftop greening is "soil erosion." We recreated heavy rain by bursting large water balloons and conducted an erosion experiment comparing the rooftop greening systems "bag method vs. conventional method." Recently, extreme weather events have increased, with "intense rain" of over 80 mm per hour rising by about 1.7 times in the last 30 years. Such heavy rain can wash away the soil and plants from rooftop greening, causing issues like clogged drainage systems. For a video comparing soil dispersion experiments, please visit https://kirinsou.jp/system/#experiment1.

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  Rooftop Greening Revolution: A Rooftop Greening System That Won't Fail - "Evergreen Kiri Grass Bag Method" Case Study: Roof Greening This is roof greening using the rooftop greening system "Evergreen Kiri Grass Bag Method," which is designed to prevent failure. Since it is on the roof surface, it is secured with a net to prevent scattering. 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 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 existing building being over 50 years old and deteriorating, a competition was held in 2008, and the proposal by Kengo Kuma was adopted. The initial plan was for 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 Kiri Grass Bag Method" that won't fail, please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kirinsou Bag Method" Case Study: Rooftop Greening (Also Accommodating Curves) This is a rooftop greening project of approximately 180 square meters using the fail-proof 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. This cannot be accommodated by conventional tray-style greening. The Evergreen Kirinsou Bag Method also accommodates square sizes of 50cm, 25cm, and rectangular sizes of 15cm x 50cm. The Evergreen Kirinsou Bag Method has flexibility in the bags, allowing for shape adjustments on-site. Additionally, custom sizes can be ordered, enabling rooftop greening tailored to the site. The bags are flexible, making it possible to green curved surfaces as well. For more details on the Rooftop Greening Revolution and the fail-proof 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 the 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 beneath the rooftop greening, using thermography to investigate the temperature distribution in the classrooms. In the classroom directly beneath the rooftop greening, the overall temperature was shown in blue, confirming the effectiveness 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 and Rooftop Greening by Middle School Students) To combat the summer heat at the community meeting place, we implemented the Evergreen Kiri Grass Bag Method. The meeting place is a prefab structure, which makes it quite hot in summer as the air conditioning does not work well. 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 Kirinsou Bag Method" Case Study: Slope Greening A sediment control dam, known as a "sabo dam," is a type of dam installed in rivers. It is also referred to as a "sediment control dam." This facility captures harmful sediment such as debris flows that flow down from upstream and regulates the amount of sediment flowing downstream by gradually releasing the accumulated sediment. By accumulating sediment in the sediment control dam, the slope of the river becomes gentler, preventing the riverbed and riverbanks from being eroded, while also weakening 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 has been difficult on sediment control dams, and maintaining greening has also been challenging. The Evergreen Kirinsou 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 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" Construction Case: 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 its new shoots around November, so it does not grow excessively, and the shape of the letters remains unchanged. The bag method is made from weed control sheets, effectively preventing weed intrusion and soil erosion. With such low-maintenance plants and the bag method, it is possible to create letters using this 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.