The Pin Foundation is a foundational construction method that protects important natural environments (registered with the Ministry of Land, Infrastructure, Transport and Tourism NETIS).
■Optimal New Foundation Method for Protecting the Natural Environment The Pin Foundation is a foundation method designed for small-scale structures such as boardwalks, bridges, and pavilions. Traditional concrete foundation methods typically involve extensive excavation of the ground and the transportation of foundation blocks using heavy machinery. In contrast, the Pin Foundation method does not require heavy machinery and does not necessitate significant excavation of the ground surface. This method is ideal for foundations in locations where heavy machinery cannot be brought in or where it is important to protect valuable natural environments. It is also capable of addressing weak ground conditions (equivalent N value of 0.5 to 2.0) that traditional methods cannot accommodate. This method is registered with the Ministry of Land, Infrastructure, Transport and Tourism's New Technology Information System (NETIS).
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basic information
The pin foundation is a method that provides the necessary support for the pillars of a structure by driving small-diameter steel pipes into the ground at an angle through small concrete blocks or brackets. There is no need for excavation or opening of the ground to create a foundation or for the entry of heavy machinery, so the original natural environment and terrain remain intact even after the installation of walkways and other structures. Furthermore, if it becomes necessary to remove the structure for any reason in the future, the foundation pipes can be easily extracted by hand after dismantling the superstructure, resulting in no environmental destruction associated with the removal.
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Applications/Examples of results
Nationally Designated Historic Site: Kanjida Castle Ruins (Kumamoto Prefecture) Nakahara Town, Andoku: Seki River (Fukuoka Prefecture) Nagano Green Space, Daiyu Saka Pond (Fukuoka Prefecture) Hohashira Forest Botanical Garden (Fukuoka Prefecture) Tsukui Lake Castle Mountain Park Overpass (Kanagawa Prefecture) Matsuda Mega Cave (Okinawa Prefecture) Iriomote Hinaigawa District Promenade (Okinawa Prefecture) Yanagimizu Spring Water Park (Kumamoto Prefecture) Mangrove Park, Roadside Station Amami City Sumiyo (Kagoshima Prefecture) Okukubi River Promenade (Okinawa Prefecture) Kawaminami Wetland Plant Community (Miyazaki Prefecture) Manko Park (Okinawa Prefecture) Nishikaibashi Park (Nagasaki Prefecture) Yunoko Island Park (Kumamoto Prefecture) Kawachiura Castle Ruins Park (Kumamoto Prefecture) Hanaguri Ide Park (Kumamoto Prefecture) Nishinokubo Park (Kumamoto Prefecture) Tachiarai Pond Group (Fukuoka Prefecture) Hibikinada Biotope (Fukuoka Prefecture) Kawaminami Fishing Port (Okinawa Prefecture) Chigo Pond Park (Miyazaki Prefecture) Higashino Pond Natural Park (Kumamoto Prefecture) Ishigamiyama Park (Kumamoto Prefecture) Mikane Pond Park (Fukuoka Prefecture) Moshio Bridge Canal Promenade (Minato Ward, Tokyo) Kushira Town, Nakayama Pond Park (Kagoshima Prefecture) Isshinkyo's Great Cherry Blossom (Kumamoto Prefecture) Ide Town Promenade (Kyoto Prefecture) Historical Park: Maruchijo (Kumamoto Prefecture) Amajahubaru Rural Park (Okinawa Prefecture) Nationally Designated Historic Site: Ikebene Temple Ruins (Kumamoto Prefecture) National Route 390, Miyara Yarabu Avenue (Okinawa Prefecture) National Okinawa Memorial Park: Ocean Expo Park (Okinawa Prefecture) Kumamoto City Zoo and Botanical Garden (Kumamoto Prefecture) National Seaside Park: Uminaka Road Park (Fukuoka Prefecture) etc...
Company information
■FRP materials that are lightweight, have high strength per unit weight, are corrosion-resistant, and are strong against salt damage. ■Pin foundation bases that do not require the use of heavy machinery or excavation of the ground surface. Our company has introduced these two technologies ahead of other companies in Japan and boasts a wealth of construction achievements. We are involved in the design and construction of bridges, decks, boardwalks, and piers in national parks and theme parks that are well-known to everyone. By partnering with a Dutch company and introducing new technology using FRP materials, we have made it possible to construct long-span FRP bridges that were previously difficult to achieve. Furthermore, a durability of over 60 years is expected, making this a technology that can open up new markets in the future.
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